Taxes Terms

The 0% long-term capital gains rate is the lowest of the three federal rates that apply to most long-term capital gains and to qualified dividends. It applies to the part of a gain that falls below a taxable-income ceiling published each year, so part of a single sale can be taxed at 0% and the rest at 15%.

A 72(t) distribution is a withdrawal taken under the substantially equal periodic payments (SEPP) exception in Internal Revenue Code Section 72(t)(2)(A)(iv), which lets someone tap a retirement account before age 59½ without the 10% early withdrawal penalty: provided they commit to a fixed, IRS-calculated payment schedule and don't break it.

An 83(b) election is a choice to be taxed on restricted property, usually founder or early-employee shares, at the moment it is transferred rather than as it vests. It is filed within 30 days of the transfer, it cannot be undone, and if the shares are later forfeited the tax paid is not recoverable.

A 501(c)(3) organization is a nonprofit that the IRS recognizes as tax-exempt under Internal Revenue Code section 501(c)(3) for a charitable, religious, educational, or similar purpose. It is the category of recipient whose gifts are generally deductible, and it comes in two forms: public charity and private foundation.

A 529 nonqualified distribution is money taken out of a 529 plan and not used for a qualified expense. Only the earnings portion is taxable, and only that portion carries the additional 10 percent tax, which has five statutory exceptions. Neither the tax code nor the IRS uses the phrase.

A 529 plan is a state-sponsored investment account for education savings where money grows tax-deferred and comes out federally tax-free for qualified education expenses, from college tuition to K-12 costs and, as of recent law changes, professional credentials.

A 1035 exchange moves the value of one insurance or annuity contract into another without triggering tax on the gain. It only runs in certain directions, the old contract's cost basis carries over rather than resetting, and cash or a discharged loan taken out along the way is taxable.

The ACA subsidy cliff is the point where household income crosses 400% of the federal poverty line and the premium tax credit for Marketplace health coverage drops from a partial subsidy to zero, all at once.

An accrual method of accounting reports income when the all-events test is met and deducts an expense when the liability is fixed, determinable and economically performed. For a business with formal financial statements the trigger for income can be book recognition, which is where "income when earned" stops being the whole rule.

The Additional Medicare Tax is a 0.9% surtax on wages and self-employment income above $200,000 for a single filer or $250,000 on a joint return. The employee owes all of it and the employer matches none of it.

Adjusted gross income is gross income minus a specific list of deductions written into section 62 of the tax code. It is the figure a long list of tax benefits is measured against, and the figure the IRS uses to verify an electronically filed return.

The adoption credit is a federal credit for the reasonable and necessary costs of legally adopting a child. Since tax year 2025 part of it is refundable, which means it can be paid out to a family whose tax is already zero, and only the part that is not refundable can be carried to a later year.

After-tax 401(k) contributions are a distinct, non-Roth contribution type that some plans allow on top of the regular deferral limit. You get no deduction going in, the contributions become basis you recover tax-free, but the earnings on them stay pre-tax and are taxable when distributed.

Alimony is a payment to or for a spouse or former spouse required by a divorce or separation instrument. For instruments executed after December 31, 2018 it is neither deductible by the payer nor taxable to the recipient; instruments executed before 2019 keep the old treatment unless they are modified to expressly adopt the new one.

The alternate valuation date is a date six months after a death that an executor may elect, on the federal estate tax return, as the date for valuing everything in the gross estate instead of the date of death. The election is all or nothing, it is irrevocable, and the law allows it only where it reduces both the estate's value and its tax.

The alternative minimum tax is a parallel federal tax calculation that disallows certain deductions and counts certain income the regular calculation ignores. A taxpayer computes both and pays the higher one, and for most households that ever owe it, the trigger is a large incentive stock option exercise.

An amended return corrects a return already filed, on Form 1040-X for an individual. To recover money it generally has to be filed within three years of filing the original return or two years of paying the tax, whichever is later.

An American Depositary Receipt is a certificate issued by a US bank that represents a set number of shares of a non-US company held by the bank, so that the foreign stock can be bought, sold and paid dividends in US dollars through a US brokerage account. Most foreign stocks that trade in US markets trade this way.

The American Opportunity Tax Credit is worth up to $2,500 per student for each of the first four years of an undergraduate degree, and 40 percent of it is refundable. It is the larger of the two federal education credits and the one with the most eligibility conditions attached.

The annualized income installment method is the alternative way of sizing each estimated tax installment, based on the income actually received by that point in the year rather than on a quarter of the year's total. It is worked on Schedule AI of Form 2210 and it exists for people whose income arrives unevenly.

The applicable federal rate is the minimum interest rate the Internal Revenue Code uses to test whether a loan or an installment sale charges enough interest to be taken at face value. The IRS determines it every month from yields on U.S. Treasury obligations and publishes it in a revenue ruling.

An appreciated stock donation is the transfer of shares worth more than they cost directly to a charity, rather than selling them and donating the proceeds. Done correctly it produces a deduction for the full market value while the built-in gain is never taxed to anyone, and four specific conditions can defeat either half of that.

Asset location is the decision about which account holds which investment (taxable brokerage, tax-deferred, or Roth) in order to reduce the tax your portfolio generates. It is not the same as asset allocation, which decides what you own in the first place.

Average cost basis figures your basis in a holding by averaging together what you paid across every purchase, rather than tracking each purchase as its own lot. It is available only for mutual fund shares and shares held in a dividend reinvestment plan, not for ordinary individual stocks.

A backdoor Roth IRA is a two-step strategy for high earners who make too much to contribute to a Roth IRA directly. You make a nondeductible contribution to a traditional IRA, then convert it to a Roth IRA. Done cleanly, little or no tax is due, but the pro-rata rule can change that.

Backup withholding is tax a payer must deduct from certain payments, at a flat 24 percent, when the recipient's taxpayer identification number is missing or wrong or the IRS has flagged underreported interest or dividends. It is a compliance backstop, not a penalty, and the amount withheld is credited on the recipient's return.

The bargain element is the difference between what employer stock is worth and what the employee paid for it. It is not an IRS term, and the same two words name four legally different amounts, measured on four different dates, with four different tax results.

The lifetime gift and estate tax exemption is the total value a person can transfer during life and at death before federal transfer tax applies, $15,000,000 for 2026. It is one allowance covering both, not one for gifts and another for the estate.

A benefits cliff is the point where a small rise in earnings triggers the loss of a public benefit worth more than the raise, leaving a household worse off for earning more.

The bona fide residence test is one of the two ways to qualify for the foreign earned income exclusion. It is met by genuinely residing in a foreign country for an uninterrupted period that includes an entire tax year, and it turns on the character of the stay rather than on counting days.

Bond premium is the amount by which a holder's basis in a bond exceeds the total the bond will pay back, other than its regular interest. The tax law lets a holder of a taxable bond spread that premium against the coupons, and requires a holder of a tax-exempt bond to do so.

Bonus depreciation lets a business deduct the full cost of qualifying equipment and other short-lived property in the year it is placed in service, instead of spreading the deduction over the property's recovery period.

Bonus tax withholding is how an employer holds back tax from a bonus, most often at a flat 22% rate. That withholding is a prepayment, not the final tax, so a bonus is not actually taxed at a higher rate than the rest of your pay.

Bracket creep is a rise in a taxpayer's real tax burden caused by inflation rather than by a rise in what they can actually buy. It happens whenever a dollar figure in the tax law stays put while incomes and prices rise, and it is now concentrated in the provisions that carry no inflation adjustment at all.

Bunching deductions means concentrating two or more years of discretionary deductible spending into a single tax year, so that year clears the standard deduction and itemizing becomes worthwhile, while the other years take the standard deduction. The total spending is unchanged; only its timing moves.

Business expenses are the costs of running a business, and the deductible ones are those the tax code treats as "ordinary and necessary" for that trade or business. They reduce taxable profit, but several common costs are limited or disallowed.

A bypass trust is a trust funded at the first spouse's death with property that the surviving spouse may benefit from but does not own, so that everything the trust earns afterward stays out of the survivor's taxable estate. It is also called a credit shelter trust or the "B" trust of an A-B plan.

A C corporation is any corporation that has not elected S status. It is a tax classification rather than a way of forming a business, and its defining feature is that the corporation pays its own income tax before anything reaches the shareholders.

A cafeteria plan is a written employer plan that lets employees choose between cash wages and a menu of tax-favored benefits without being taxed on the choice itself. It is the legal machinery behind almost every pre-tax payroll deduction on an American pay stub.

Cancellation of debt is the release of a borrower from an obligation to repay, and the released amount is ordinarily taxable income. Several exclusions can remove it from income, and most of them charge a price in future tax benefits.

A capital gain is the profit realized when you sell a capital asset for more than its adjusted basis. The tax code never defines the bare phrase: it defines the capital asset, and it defines short-term and long-term gains by how long the asset was held.

A capital gains distribution is a fund's payout of the net capital gains it realized inside the portfolio, made to whoever holds shares on the record date. It is taxable in a taxable account even if you bought recently, sold nothing, and are holding the fund at a loss.

Capital gains tax is the tax on profit from selling an asset for more than you paid. Assets held over one year get preferential long-term rates of 0%, 15%, or 20%; assets held a year or less are taxed as ordinary income.

A capital improvement is work on property that adds to its value, prolongs its useful life, or adapts it to a new use, so its cost is added to the property's basis rather than deducted as a repair. Federal tax law draws the line differently for a home you live in and for property you rent out.

A capital loss is the shortfall when a capital asset is sold for less than its adjusted basis. Whether it is deductible is a separate question from whether it exists: IRC 165(c) allows an individual a loss deduction only for business, profit-seeking or casualty losses, so a loss on personal property produces nothing.

A capital loss carryover is the part of a net capital loss that a taxpayer could not use this year and carries into the next one. For an individual it never expires, it keeps its short-term or long-term character, and it is used automatically rather than saved for a better year.

Carried interest is the share of a private fund's profits that goes to the manager as a reward for gains rather than as a fee on assets. Its tax treatment depends on a rule that requires the fund to have held the underlying asset more than three years, not the usual one.

Carryover basis is the rule that a person who receives property as a gift takes the giver's basis in it rather than its value at the time of the gift, so the unrealized gain travels with the asset and is taxed when the recipient sells. Where the property is worth less than the giver paid, two different bases apply and neither one produces a loss in the range between them.

The cash method of accounting reports income when it is actually or constructively received and deducts expenses when they are paid. It is the default for individuals and most small businesses, and the entity-level bar in section 448 does not reach a sole proprietor, a single-member LLC or an S corporation at all.

A catch-up contribution is an additional amount the IRS allows people age 50 and older (and, for some workplace plans, ages 60 through 63) to contribute to a retirement account beyond the standard annual limit, meant to help people closer to retirement save more in their remaining working years.

A Certified Public Accountant (CPA) is an accounting professional licensed by a state board after meeting education and experience requirements and passing the Uniform CPA Examination. CPAs handle tax, audit, and accounting work, and hold unlimited rights to represent taxpayers before the IRS.

The charitable contribution deduction is the federal income tax deduction for gifts to qualifying organizations under Internal Revenue Code section 170. How much of a gift actually reduces tax depends on who received it, what was given, a floor, a ceiling, and whether the paperwork exists.

The child and dependent care credit offsets part of what you pay for care that lets you work. It covers a percentage of up to $3,000 of care expenses for one qualifying person or $6,000 for two or more, and it is nonrefundable, so it can only reduce tax you actually owe.

Child support is money one parent pays the other for the support of their child under a court order or agreement. It is neither deductible by the payer nor taxable to the recipient, and it never has been: the 2017 tax act changed the treatment of alimony and left child support untouched.

The child tax credit is a per-child credit against federal income tax, worth up to $2,200 for each qualifying child under 17. Part of it is refundable, meaning it can be paid out to a family whose tax is already zero, and the rest can only reduce tax that is owed.

Citizenship-based taxation is the rule that the United States taxes its citizens on their worldwide income no matter where they live. The United States is one of only two countries that tax this way, and it is the reason Americans abroad still file a US return every year.

The clean vehicle tax credit was the federal credit for buying a qualifying electric or fuel cell vehicle, worth up to $7,500 new and up to $4,000 used. It was terminated for any vehicle acquired after September 30, 2025, and because acquisition and delivery are separate dates, a small number of buyers who signed before that date are still claiming it.

Collectibles are physical objects such as art, wine, classic cars, coins, and trading cards held for price appreciation rather than income. They produce no cash flow, cost money to authenticate, store, and insure, and their long-term gains carry a higher maximum tax rate than stocks.

Commission income is variable pay a worker earns as a percentage of the sales or business they generate. As an employee's earnings it is taxable wages with its own withholding quirks; it is a different thing from a commission a customer pays a salesperson for buying a product.

A community property trust is an express trust, authorized by a handful of state statutes, that lets a married couple living anywhere characterize property they transfer into it as community property. Its commercial appeal rests on a federal basis rule the IRS has never confirmed reaches it.

Commuter benefits are the pre-tax transit, vanpool and parking benefits an employer may provide under Internal Revenue Code section 132(f), which the Code itself calls a qualified transportation fringe. Transit and parking carry separate monthly limits and an employee may use both in the same month.

The consistent basis requirement caps an heir's starting basis in inherited property at the value finally determined for federal estate tax purposes, so an estate cannot report a low value to save estate tax and the heir then claim a high one to cut capital gains. It applies only where the property's inclusion actually increased the estate's tax.

A consolidated reporting statement is the year-end package a broker sends one customer, combining several Forms 1099 for the same account into a single document. Because those statements travel together, the whole package is due February 15 rather than the January 31 that would otherwise apply to some of them.

Constructive receipt is the doctrine that income is taxed when it is credited to you, set apart for you, or otherwise made available so that you could draw on it, not when you choose to take it. The exception is where your control over receipt is subject to substantial limitations or restrictions.

A contribution limit is the maximum dollar amount the IRS allows a person to put into a tax-advantaged account, such as a 401(k) or an IRA, in a single calendar year.

The convenience of the employer rule treats a day an employee works from home for their own convenience as a day worked at the employer's location, so the employer's state taxes wages earned somewhere the employee never set foot. New York's version is the one with a published test for escaping it.

A corrected 1099 is a replacement information return a payer issues after discovering an error in one it already filed or already sent you. It is not a separate form: it is the same form with the "CORRECTED" box checked, and some errors take two documents to fix rather than one.

Cost basis is what you are treated as having paid for an asset, and it is the figure subtracted from a sale price to produce a taxable gain or loss. The number that actually does that job is the adjusted basis, because basis changes over time.

Cost segregation is the analysis that splits a building's cost among land, land improvements, personal property and the structure itself, so the shorter-lived pieces are depreciated over 5, 7 or 15 years instead of 27.5 or 39. Done after the fact it is a change of accounting method, not an amended return.

A Coverdell education savings account is a trust or custodial account under Internal Revenue Code section 530 that grows tax free and pays education expenses tax free, including a broad list of elementary and secondary school costs. Contributions are capped at $2,000 a year per beneficiary and stop when the beneficiary turns 18.

Crowdfunding donations are contributions to an online fundraiser. Money given out of generosity with nothing expected in return is generally a nontaxable gift to the recipient and is not deductible to the giver unless it goes to a qualified charity.

A Crummey power is a temporary right, given to a trust beneficiary, to withdraw a gift made to the trust. Its only purpose is to convert what would otherwise be a gift of a future interest into a present interest, so the gift qualifies for the annual gift tax exclusion.

A crypto airdrop is a distribution of a crypto asset to many ledger addresses at once, usually for no payment. Receiving one is generally ordinary income at the asset's value when the recipient gains control of it, even though nothing was paid for it.

Crypto mining is the process of using computing power to validate transactions and add blocks to a proof-of-work blockchain, earning newly issued coins as a reward. Those rewards are taxable income when received.

Crypto taxes are the federal income tax rules that apply to digital assets. Because the IRS treats them as property rather than currency, every disposal is a taxable event, basis must be tracked wallet by wallet, and broker reporting is phasing in on two different dates.

A currency devaluation is a deliberate decision by a government or central bank to lower the official value of its own currency against gold or another currency. It is only possible where the exchange rate is fixed by the authorities, which is why a floating currency like the dollar depreciates rather than being devalued.

Currency exchange is the act of converting money from one currency to another. The cost is rarely a stated fee; it is mostly hidden in the spread, the gap between the rate you are given and the true mid-market rate, so where and how you convert can matter more than any posted commission.

Currency risk is the risk that a change in exchange rates reduces the home-currency value of a foreign investment or income, even when the underlying asset performs well in its own currency.

The de minimis rule for bond discount treats a small discount as zero for tax purposes. The threshold is one quarter of one percent of the bond's stated redemption price at maturity for each complete year to maturity, and the same formula appears twice in the tax code, once for original issue discount and once for market discount.

A dependent is a person the tax code lets you claim on your return, and section 152 says the term means exactly two things: a qualifying child or a qualifying relative. Each has its own set of tests, and a person who fails both is not your dependent no matter how much you support them.

A dependent care FSA lets an employee set aside pay before tax to reimburse the cost of care that lets them work. The statutory ceiling is only the first of four limits, and the ones that actually cut an election down are the earned income test, the related-person rule and nondiscrimination testing.

Depreciation is the tax deduction that spreads the cost of a business or income-producing asset over a set number of years instead of allowing it all at once. It is a timing deduction, not a free one: every dollar taken reduces the asset's basis and comes back when the asset is sold.

Depreciation recapture is how the tax code takes back the benefit of depreciation deductions when the asset is sold. Part of the gain is carved out and taxed under its own rule, either as ordinary income or at a rate ceiling of 25%, rather than at the ordinary long-term capital gains rates.

Digital nomad finances are the money and tax questions facing people who work remotely while moving between locations: keeping or shedding state residency, paying self-employment tax that living abroad does not erase, banking, and health coverage.

Direct indexing means holding the individual stocks that make up an index rather than holding a fund that tracks it. The index exposure is similar; what differs is that each holding is separately owned, which allows losses to be taken on individual positions and specific companies to be left out.

A direct rollover is a transfer of retirement money straight from one plan or account custodian to another, the funds never pass through your hands, which avoids the mandatory tax withholding and 60-day deadline that apply to an indirect rollover.

A disqualifying disposition is a sale of incentive stock option or employee stock purchase plan shares that fails one of the required holding periods, so part of the gain becomes ordinary income in the year of the sale. No tax is withheld on it, which is the trap.

Distributable net income is the ceiling that decides how much of a trust's or estate's income tax bill moves to its beneficiaries. It caps the entity's deduction for what it distributes, and it caps and characterizes what each beneficiary has to report.

A dividend is a distribution of a company's earnings to its shareholders, declared by the board rather than owed to anyone. How it is taxed depends on what kind of company paid it and, in most cases, on how long the shares were held around the date the dividend was priced out of them.

A donor-advised fund is an account at a public charity that a donor funds now, takes the charitable deduction on now, and then recommends grants from over time. The sponsoring charity legally owns and controls the money, and the donor holds advisory privileges rather than ownership.

Dual citizenship taxes are the US tax consequences of holding US citizenship alongside another country's. Because the United States taxes citizens on worldwide income, a dual citizen owes US tax and files a US return no matter where they live or which passport they use.

A dynasty trust is an irrevocable trust drafted to last for several generations, or for a fixed period of centuries, rather than ending when the grantor's children die. How long it may actually last is a question of the law of the state that governs it, and the states do not agree.

The early withdrawal penalty is an additional 10% federal tax the IRS charges on money taken out of most retirement accounts before age 59½, on top of any ordinary income tax owed.

The earned income tax credit is a refundable federal credit for people who work and earn a modest income. Because it is refundable, it can pay out as cash even when the filer owes no income tax at all, which makes it one of the largest federal transfers to working households.

The Education Savings Bond Program is the federal tax break that lets a qualifying taxpayer exclude savings bond interest from income when the bonds are redeemed in a year they pay qualified higher education expenses. Four conditions about who owns the bond and when it was issued decide eligibility long before income does.

The educator expense deduction lets a kindergarten through grade 12 teacher, counselor, principal or aide deduct classroom costs without itemizing. It is capped at $350, and the cap is per eligible educator rather than per tax return.

An effective tax rate is total tax divided by income, meaning the share of what a household earned that actually went to tax rather than the rate charged on its last dollar. The IRS's own statisticians call the same measure an average tax rate.

An elective deferral is the part of your pay you choose to have your employer put into a workplace retirement plan instead of handing you as cash. It is the formal name in the tax code for what most people call a 401(k) contribution, and it covers both pre-tax and Roth versions.

An employee stock purchase plan (ESPP) lets employees buy company stock through payroll deductions at a discount, often 15% off the lower of two prices, making a well-run ESPP one of the few near-guaranteed returns in personal finance.

An Employer Identification Number, or EIN, is the nine-digit number the IRS uses to identify a business, estate, or trust on its filings. It is an identifier rather than a license or a legal status, and once issued it brings filing expectations and an ongoing duty to keep the IRS informed of who controls the entity.

The enhanced deduction for seniors is a temporary $6,000 deduction for each taxpayer aged 65 or older, available for 2025 through 2028 whether or not they itemize. It phases out at 6 percent of modified adjusted gross income above $75,000, or $150,000 on a joint return, and it is separate from the long-standing additional standard deduction for age.

An enrolled agent (EA) is a tax professional licensed directly by the U.S. Treasury with unlimited rights to represent taxpayers before the IRS. EAs earn the credential by passing a three-part IRS exam or through qualifying IRS work experience, and they specialize purely in taxation.

The ESPP discount is the reduction from market price at which an employee stock purchase plan lets you buy company stock, up to 15% under a qualified plan. A lookback feature applies that discount to the lower of two prices, which is where the real return comes from.

An estate freeze is any technique that fixes the value of the interest an owner keeps, so that future growth in an asset accrues to the next generation instead. The family of techniques is old enough that Congress built a whole chapter of the tax code to police it.

The federal estate tax is a tax on the transfer of property at death, paid by the estate rather than by the people who inherit. Because each person can pass $15,000,000 free of it, it reaches a very small share of estates, and the scheduled cut to that figure after 2025 was repealed rather than postponed.

An estimated tax penalty waiver is a request that the IRS excuse an underpayment charge that does apply, on one of two statutory grounds: a recent retirement after age 62 or disability, or a casualty, disaster or other unusual circumstance. It is made by checking a box on Form 2210 and attaching a written explanation.

Estimated taxes are the payments you make directly to the IRS on income nobody withholds tax from, in four installments during the year. Skipping them produces an addition to tax computed like interest, and the way to make that impossible is the prior-year safe harbor.

An excess contribution is money put into a tax-favored individual account beyond what the law allows. Under Internal Revenue Code section 4973 it carries a 6% excise tax for every year it stays in the account, and the tax keeps recurring until the excess is removed or absorbed.

An exchange rate is the price of one currency expressed in another, for example how many U.S. dollars it takes to buy one euro. It is the number that governs every cross-border conversion, payment and investment, and it moves constantly for freely traded currencies.

An excise tax is a tax on a specific act, product or transaction rather than on income or property. Federal excise taxes range from the cents-per-gallon charge inside the price of gasoline to the penalty charges that apply when a retirement account rule is broken.

The exclusion ratio is the formula that determines how much of each payment from an annuitized nonqualified annuity is a tax-free return of your own money and how much is taxable investment gain.

An expatriate, in the US tax sense, is a US citizen or resident living outside the United States. Because US tax follows citizenship, an expatriate keeps filing a US return on worldwide income and reporting foreign accounts, while using the exclusion, the credit, and treaties to avoid being taxed twice.

The expatriation tax, often called the exit tax, is a one-time tax on certain people who give up US citizenship or long-term green card status. It treats most of their property as sold the day before they leave, taxing the built-in gain above an exclusion amount.

The failure to file penalty is an addition to tax of 5 percent of the unpaid tax for each month a return is late, capped at 25 percent. It accrues at ten times the rate of the penalty for paying late, which is why filing on time matters more than paying on time.

The failure to pay penalty is an addition to tax of 0.5 percent of the unpaid tax for each month it remains unpaid, capped at 25 percent. It halves for a taxpayer who filed on time and has an installment agreement, and doubles after a levy notice.

FATCA is the 2010 US law that fights offshore tax evasion two ways: it makes foreign banks report accounts held by US persons to the IRS, and it makes US taxpayers report larger foreign financial assets on Form 8938 with their return.

The FBAR is an annual report of foreign financial accounts, filed with the Financial Crimes Enforcement Network rather than with your tax return. It is triggered by the combined value of the accounts, and signature authority alone is enough to require it.

FICA is the Federal Insurance Contributions Act, the chapter of the tax code that imposes the Social Security and Medicare payroll taxes. It is not one tax split in half: it is two separate taxes on two different taxpayers, one on the employee and one on the employer, that happen to be collected together.

Filing status is the category you check at the top of Form 1040, one of five, that decides which rate schedule applies to you, how large a standard deduction you get, and which credits and deductions you are eligible for. It is a legal determination about your household, not a description of how you see yourself.

A decedent's final income tax return is the Form 1040 covering the part of the year the person was alive, from 1 January to the date of death. It is due on the ordinary tax deadline for that year rather than on any death-related clock, and it claims the full standard deduction no matter how short the period.

First-in, first-out is the default rule for figuring which shares of stock a sale counts as coming from when you have not told your broker otherwise. It treats the oldest shares you own as the ones sold first, which in a long-rising market tends to produce the largest possible taxable gain.

Fiscal policy is the government's use of taxing and spending to influence the economy. In the United States it is set by Congress and the President, which distinguishes it from monetary policy, run by the Federal Reserve.

The five-year rule is one of several IRS holding-period requirements — most commonly the rule that a Roth account must be open at least five years before its earnings can qualify for tax-free withdrawal.

The foreign earned income exclusion lets a qualifying American living abroad leave a capped amount of foreign wages or self-employment income out of gross income. It reaches earned income only, so it does nothing for a pension, a dividend or Social Security.

The foreign housing exclusion or deduction lets a US taxpayer who qualifies for the foreign earned income exclusion also leave out part of the cost of housing abroad. Employees take it as an exclusion; the self-employed take it as a deduction against adjusted gross income.

A foreign pension is a retirement plan established under the law of a country other than the United States. For a US taxpayer it is almost never a qualified plan, so the tax deferral it enjoys abroad often does not carry over, and it brings reporting obligations that have nothing to do with how much tax is owed.

The foreign tax credit reduces US tax dollar for dollar by income tax paid to another country, so the same income is not fully taxed twice. It is capped at the US tax attributable to foreign-source income, and it is an alternative to deducting the foreign tax rather than something you can do alongside it.

Form 706 is the federal return an executor files to report a decedent's estate, and it carries two separate taxes: the estate tax under chapter 11 and the generation-skipping transfer tax on direct skips under chapter 13. Its official title is "United States Estate (and Generation-Skipping Transfer) Tax Return."

Form 709 is the annual federal return on which an individual reports lifetime gifts. Its official title is "United States Gift (and Generation-Skipping Transfer) Tax Return," and filing it is usually a reporting step rather than a tax bill, because most reportable gifts consume lifetime exclusion instead of producing a payment.

Form 1040 is the two-page federal document an individual uses to report a year's income and figure the tax on it. Its official title is "Form 1040, U.S. Individual Income Tax Return," and a family of related forms and schedules hangs off it.

Form 1041 is the federal income tax return an estate or a non-grantor trust files on its own income. Its defining feature is the income distribution deduction, which shifts tax to the beneficiaries on whatever the entity pays out, so the same dollar is taxed once rather than twice.

Form 1099-B is the return a broker files reporting what you sold and what you received for it. Its official title is "Proceeds From Broker and Barter Exchange Transactions", and the detail that decides everything else is that it reports your cost basis only for some of what you own.

Form 1099-DIV is the return a company, fund or broker files reporting the distributions it paid you on stock. Its official title is "Dividends and Distributions", and the second word is doing real work: several of its boxes report things that are not dividends at all.

Form 1099-INT is the return a bank, broker or other payer files reporting interest paid to you. Its official title is "Interest Income", the reporting trigger is $10, and the form sorts interest into boxes that are taxed by three different governments.

Form 1099-K reports money settled to you through a payment card or an online platform. Its official title is "Payment Card and Third Party Network Transactions", and those are two separate reporting paths with two very different thresholds.

Form 1099-NEC is the return a business files to report what it paid for services performed by someone who is not its employee. Its official title is "Nonemployee Compensation", and it is the only Form 1099 due to the recipient and the IRS on the same date.

Form 1099-R reports money that left a retirement plan, an IRA, an annuity or an insurance contract. Its official title is a list of arrangements ending in "etc.", but the whole form turns on two small fields: the taxable amount in box 2a and the distribution code in box 7a.

Form 8606, titled "Nondeductible IRAs," is the IRS form that records after-tax money contributed to a traditional IRA and tracks it from year to year. That running total is your IRA basis, and it is the only thing standing between you and paying tax twice on the same dollars.

Form 8938, Statement of Specified Foreign Financial Assets, is the IRS form on which a US taxpayer discloses foreign financial assets above set thresholds. It is filed with the income tax return under Internal Revenue Code section 6038D, and it reaches more than bank accounts.

Form W-2 is the annual statement an employer must give each employee, and file with the Social Security Administration, reporting the wages paid and the taxes withheld. Its official title is "Wage and Tax Statement," and the figure in Box 1 is deliberately not the same as gross pay.

Form W-4 is the IRS form an employee gives their employer to set how much federal income tax is withheld from each paycheck. Its official title is "Employee's Withholding Certificate," and since the 2020 redesign it works in dollar amounts rather than the withholding allowances it used to count.

Form W-9 is the IRS form on which a U.S. person gives their taxpayer identification number to someone who has to file an information return about a transaction with them. It is never filed with the IRS: the form goes to the requester, who keeps it, and the signature on it is made under penalties of perjury.

A Form 1099 is a return a payer files with the IRS reporting money it paid you, with a copy sent to you. It is one of a family of information returns, each with its own threshold, and receiving one is not what makes the income taxable.

A fringe benefit is anything of value an employer provides beyond wages. The default rule is that it is taxable income, and it escapes tax only where a specific statute says so, which is why some benefits are invisible on a pay stub and others show up as wages.

The generation-skipping transfer tax is a separate federal transfer tax on gifts and bequests that pass to someone two or more generations below the giver, or to a trust for such people. It exists so that skipping a generation does not also skip a round of estate tax, and it has its own exemption, equal to the estate and gift exclusion but allocated separately.

Geoarbitrage is earning income tied to a high-cost location while living in a lower-cost one, so the same paycheck buys a much higher standard of living or a much higher savings rate.

A ghost preparer is someone who is paid to prepare a tax return and then refuses to sign it or to put their preparer identification number on it, leaving the return looking as though the taxpayer prepared it alone. The taxpayer is legally responsible for what was filed, which is the point of the arrangement.

Gift splitting is the election under Internal Revenue Code section 2513 that lets a married couple treat a gift made by one of them as made half by each. It is all or nothing for the year: consenting once means every gift either spouse made to a third party that year is split.

The gift tax is a federal tax on transferring property to someone for less than full value during your lifetime. It falls on the giver, not the recipient, and almost nobody pays it: exceeding the annual exclusion normally means filing a return and using part of a large lifetime exclusion, with no tax due.

A grantor retained annuity trust, or GRAT, is an irrevocable trust into which someone transfers property while keeping the right to a fixed annual payment back for a set number of years. Only the growth above an assumed rate the IRS publishes reaches the remainder beneficiaries, and it reaches them as a gift valued at the start rather than at the end.

The grantor trust rules are the part of the tax code, sections 671 through 679, that treats the person who created a trust, or occasionally someone else, as the owner of it for income tax purposes. Where they apply, the trust's income and deductions go on that person's own return and the trust is largely ignored.

Gross income is your total income before any taxes or deductions: the full amount you earn from work, business, investments, and other sources, and the starting point of every tax calculation.

Gross pay is the total amount an employer owes you for the work done in a pay period, measured before any taxes or other deductions are taken out.

Head of household is the federal filing status for someone who is unmarried at the end of the year, is not a surviving spouse, and paid over half the cost of a home that a qualifying person lived in. It carries a larger standard deduction than single, and wider bands at the bottom of the rate schedule.

A health savings account (HSA) is a tax-advantaged account for people with high-deductible health plans that offers a triple tax break: deductible contributions, tax-free growth, and tax-free withdrawals for qualified medical expenses.

Hobby income is money earned from an activity the tax code treats as a hobby rather than a business, meaning one not carried on to make a profit. The income is fully taxable, but the expenses of the activity are not deductible.

The home office deduction lets a self-employed person deduct part of the cost of their home when a specific area of it is used exclusively and regularly for business. Employees cannot claim it at all, and that exclusion is now permanent rather than temporary.

A homestead exemption is a state or local provision that removes part of a primary residence's value from property taxation. It usually has to be applied for, the deadlines are early, and in many places it brings a cap on future assessment increases with it.

Household income is the income figure the Affordable Care Act uses to decide who gets a premium tax credit or a cost-sharing reduction. It is the taxpayer's modified adjusted gross income plus the modified adjusted gross income of every other person in their family size who was required to file a tax return.

An Identity Protection PIN (IP PIN) is a six-digit number known only to you and the IRS that must appear on your federal individual income tax return for the return to be accepted. Its purpose is to stop someone else filing a return using your Social Security number or ITIN.

Imputed income is the value of a non-cash benefit that an employer must add to an employee's taxable wages, even though no money changed hands. It appears on a pay stub and a W-2 as compensation the employee never received, and the amount is usually set by a formula in the tax law rather than by what the benefit actually cost the employer.

An incentive stock option is a stock option that meets the statutory conditions in section 422 and therefore produces no ordinary income when it is exercised. The price of that treatment is an alternative minimum tax adjustment in the year of exercise and two holding periods that have to be met before the favorable rate applies.

Income in respect of a decedent is income the person had earned but had not received by the time they died, so it never reached their final tax return. Whoever receives it pays income tax on it, and unlike almost everything else inherited, it carries no new tax basis.

An income phase-out is a range of income across which a tax benefit shrinks toward zero instead of ending at a single figure. Inside the range each extra dollar of income is taxed and also removes a slice of the benefit, so the real cost of that dollar is higher than the tax bracket suggests.

Income shifting is moving income from one taxpayer to another who faces a lower rate, most often within a family. It is the "whose return does this land on" axis of tax planning, and it is narrower than it sounds, because four separate authorities exist specifically to stop the versions that do not involve genuinely giving something away.

IRMAA is the income-related monthly adjustment amount, a surcharge added to Medicare Part B and Part D premiums for beneficiaries whose income was above a threshold two years earlier. It is a cliff rather than a slope, and Social Security rather than Medicare decides it.

An independent contractor is a worker who is in business for themselves rather than employed by whoever pays them. It is a conclusion reached under whichever body of law is asking rather than a status anyone elects, and the same worker can be a contractor for one purpose and an employee for another.

An indirect rollover is a retirement-account rollover in which the distribution is paid directly to you, giving you 60 days to redeposit it into another eligible retirement account before it becomes taxable: and, if the money came from an employer plan, subject to mandatory 20% federal tax withholding along the way.

An inheritance tax is a state tax on the person who receives property from someone who died, with the rate and exemption set by how closely that person was related to the decedent. There is no federal inheritance tax, and it is a different tax from the estate tax.

Injured spouse relief recovers a spouse's share of a joint tax refund that was taken to pay a debt belonging only to the other spouse. It is claimed on Form 8379, whose official title is "Injured Spouse Allocation", and it neither disputes the debt nor appeals the offset.

Innocent spouse relief is relief from a joint tax liability where one spouse understated the tax and the other did not know. It is not the same as injured spouse relief, which recovers a share of a joint refund taken for a spouse's separate debt.

An installment sale is a sale of property in which the seller receives at least one payment after the year of the sale and reports the gain as the payments come in, rather than all at once. It spreads the tax over time but comes with several traps written into Internal Revenue Code section 453.

An intentionally defective grantor trust is an irrevocable trust deliberately drafted so that its assets sit outside the settlor's estate for transfer tax while the settlor remains its owner for income tax. That split is what makes a sale of appreciating property to the trust possible without recognizing gain.

The Internal Revenue Service is the federal agency that administers and enforces the internal revenue laws. It sits inside the Department of the Treasury rather than standing alone, and the statute that governs it creates two escalation routes, the Taxpayer Advocate Service and the Independent Office of Appeals, that operate independently of the rest of the agency.

International health insurance is coverage designed for people living, working, or traveling outside their home country, because most domestic US plans, and Medicare in particular, do not cover care received abroad.

An international money transfer is a payment sent from a person or business in one country to a recipient in another. The total cost is usually two charges stacked together, an upfront fee and a markup built into the exchange rate, and large transfers can carry reporting obligations and scam risk.

An intrafamily loan is a documented loan between relatives, structured to satisfy the tax rules for below-market loans. To avoid the IRS treating forgone interest as a taxable gift, the loan generally must charge at least the Applicable Federal Rate and be evidenced by a real promissory note.

An IRA income phase-out is the income band across which an IRA tax benefit shrinks to nothing rather than stopping at a cliff. There are two separate regimes with their own bands: one limits the deduction for a traditional IRA contribution, the other limits how much can be contributed to a Roth IRA at all.

An irrevocable trust is a trust the person who created it cannot amend or revoke. Giving up that control is what allows the property to be treated as genuinely separated from them, for creditors and for the transfer tax rules, and giving it up is the entire price. Being irrevocable does not by itself put property outside your estate, and it does not by itself change who pays the income tax.

IRS Direct File was a free, government-run online tool that let eligible taxpayers prepare a federal income tax return and file it directly with the IRS, with no commercial software and no paid preparer. It ran for two filing seasons, and the Treasury Department announced its suspension in an October 2025 report to Congress.

IRS Free File is a partnership between the IRS and a group of tax software companies that provides free guided tax software to filers under an annual income limit. The limit is set by contract rather than by statute, and the offers have to be reached through IRS.gov to be free.

An IRS impersonation scam is a demand for payment or personal information from someone claiming to be the IRS or one of its collectors. The useful defense is not a rule about whether the IRS calls, but the verification the IRS builds into a genuine collection case.

An IRS installment agreement is a written arrangement to pay a federal tax balance in monthly payments instead of at once. Penalties and interest keep running throughout, but the agreement stops levy by statute and cuts the late-payment penalty rate in half for a taxpayer who filed on time.

IRS interest is the statutory charge for owing tax late, and the statutory payment for having overpaid. It is not a penalty, which is why penalty relief never removes it, it compounds daily, and neither an extension nor an installment agreement stops it running.

Itemized deductions are the deductions a taxpayer may claim only by electing to itemize instead of taking the standard deduction. The tax code defines them by subtraction rather than by listing them, and since 2026 their benefit is capped below the top tax rate.

The jock tax is the nickname for ordinary state and municipal income tax applied to a traveling professional athlete, city by city, for the days they work in each one. No tax carries that name. What makes it distinctive is that the short-visit relief other traveling workers get is deliberately withheld from athletes.

The kiddie tax taxes a child's investment income at the parents' marginal rate once it passes a small annual threshold. It reaches unearned income only, and it exists to stop a family shifting investments into a child's name to have the income taxed in a lower bracket.

The Lifetime Learning Credit is worth 20 percent of up to $10,000 of tuition and required fees, so a maximum of $2,000 per tax return rather than per student. It has no year limit, no enrollment minimum and no degree requirement, and it is not refundable.

A like-kind exchange lets an owner swap one investment or business real property for another without recognizing the gain now. Since 2018 it reaches real property only, and it runs on two deadlines that cannot be extended for any reason.

A limited liability company is a business entity created under a state statute that separates the owners from the business's debts. It is not a tax classification, so forming one leaves a second and entirely separate question open, which is how the IRS will tax it.

A local income tax is an income tax levied by a city, county, school district or special district rather than by a state or the federal government. Its distinguishing feature is that it commonly follows where you work, not only where you live, so a commuter can owe it to a place they have never lived.

A lump-sum distribution is the payout of your entire balance from an employer retirement plan in a single tax year. The phrase has an everyday meaning and a strict statutory one, and only the strict version unlocks the net unrealized appreciation election.

Your marginal tax rate is the rate you pay on your next dollar of taxable income, the bracket your last dollars land in, not the rate you pay on everything you earn.

A marital trust is a trust drafted so that property left to a surviving spouse in trust still qualifies for the unlimited marital deduction, which a trust interest normally would not. There are three qualifying forms, and the choice between them turns on who decides where the property goes after the surviving spouse dies.

Market discount is the amount by which a bond's stated redemption price at maturity exceeds what a buyer paid for it in the secondary market. The tax law treats that discount as interest in disguise, so the gain it produces is generally ordinary income rather than capital gain.

A marriage bonus is the reduction in federal income tax a couple gets by filing a joint return compared with what the two of them would owe unmarried. It arises because joint filing effectively averages two incomes across one set of doubled brackets, so it is largest where the spouses' incomes are most unequal.

A marriage penalty is the extra federal income tax a couple owes by filing a joint return compared with what the two of them would owe unmarried. In current law it is mostly not a rate-table effect at all: the brackets are doubled for joint filers well up the schedule, and the penalty lives in the provisions that were never doubled.

Married filing jointly is the status for spouses who elect to report their combined income, deductions, and credits on one tax return. It is an affirmative election under section 6013(a) of the tax code, and it makes each spouse legally responsible for the entire tax on that return.

Married filing separately is the status of a married person who does not join their spouse in a joint return. It usually produces more total tax, it strips out or halves a long list of credits and deductions, and unlike the joint election it cannot be undone after the filing deadline.

A master limited partnership is a partnership whose units trade on a stock exchange, which keeps partnership tax treatment only because nearly all of its income comes from a narrow list of qualifying sources. Investors receive a Schedule K-1 rather than a 1099, and the tax paperwork is the real cost of admission.

Material participation is the standard that decides whether a business activity is passive, and it is met by satisfying any one of seven tests in 26 CFR 1.469-5T(a). Meeting it does not make a rental non-passive, because rentals are passive by a separate rule.

The medical expense deduction lets a taxpayer who itemizes deduct unreimbursed medical and dental costs, but only the part that exceeds 7.5% of adjusted gross income. Everything below that line produces nothing at all.

Medical tourism is traveling to another country to obtain medical care. The Centers for Disease Control and Prevention names the practice and catalogs its risks; U.S. tax law treats the resulting costs unevenly, and the rules for a drug bought and taken abroad differ from the rules for the same drug shipped home.

The interaction between Medicare and a health savings account is that enrolling in any part of Medicare ends your ability to contribute to an HSA, though you can still spend the balance you already have, including on most Medicare premiums.

Medicare tax is the payroll tax that funds Medicare's hospital insurance, charged at 1.45% to the employee and 1.45% to the employer on every dollar of wages, with no annual ceiling.

A mega backdoor Roth is a strategy that uses after-tax contributions inside a 401(k), on top of the normal deferral limit, then converts them to Roth. It can let a saver move far more into Roth accounts each year than a Roth IRA or Roth 401(k) contribution alone would allow, but only if the employer's plan supports it.

Modified adjusted gross income is adjusted gross income with certain items added back, where the items depend entirely on which rule is asking. It is a shared label rather than a shared number, and no line on Form 1040 reports it.

A modified endowment contract is a life insurance policy that was funded faster than the tax code's seven-pay test allows. It stays life insurance, and the death benefit stays tax-free, but money the owner takes out while alive is taxed on a less favorable basis.

The mortgage interest deduction is the itemized deduction for interest on debt used to buy, build or substantially improve a home and secured by that home. Both conditions have to hold, which is why what the money was spent on matters as much as what secured the loan.

A multi-currency account is a single account that holds balances in more than one currency at the same time, letting the holder receive, keep and spend each currency without converting it first. Whether it is treated as a foreign account depends on where the institution is, not on which currencies it holds.

A municipal bond is a debt security issued by a state, a local government or one of their agencies. Interest on it is generally excluded from federal gross income, and the exclusion has four holes worth knowing before buying one.

The nanny tax is the everyday name for household employment taxes: the Social Security, Medicare and federal unemployment taxes a family owes when it hires someone to work in its home and pays them more than a modest annual amount.

Net income is what remains of your earnings after taxes and other deductions come out — your take-home pay. For a business, it means profit: revenue minus all expenses and taxes.

The net investment income tax is a 3.8% tax on investment income for households above a fixed income threshold. It applies to the lesser of your net investment income or the amount by which your modified adjusted gross income exceeds the threshold, so a household just over the line usually owes it on very little.

Net pay is the amount of a paycheck that actually reaches you: gross pay minus taxes and every other deduction. It is the money a household can spend and budget on.

Net unrealized appreciation is the growth on employer stock held inside a workplace retirement plan, measured above what the plan paid for it. A special election lets you pay ordinary income tax only on the plan's cost and treat all of that growth as long-term capital gain instead.

A non-qualified stock option is the ordinary kind of employee stock option, meaning any option that does not meet the statutory conditions for an incentive stock option or an employee stock purchase plan. Exercising one creates ordinary compensation income equal to the spread, taxed and withheld like wages, and only the movement in the share price after exercise is capital gain.

Noncash charitable contributions are gifts of property rather than money, clothing, household goods, cars, securities, real estate. Deducting them triggers extra documentation as the value rises: Form 8283 above $500 and a qualified appraisal above $5,000.

A nondeductible IRA contribution is money paid into a traditional IRA that you take no deduction for. Those dollars become after-tax basis, which should never be taxed again, and the room to make such a contribution appears precisely as the deduction phases out.

A nonqualified annuity is an annuity bought with after-tax money outside of a retirement plan or IRA, which changes how its growth and its payouts are taxed compared with an annuity held inside one.

A nonresident alien is an individual who is neither a US citizen nor a US resident for tax purposes. The United States taxes a nonresident alien only on US-source income, and it uses two very different methods depending on whether that income is connected to a US business.

An offer in compromise is an agreement under which the IRS accepts less than the full amount of a tax debt and treats the liability as satisfied. It is available on three defined grounds, it costs a fee and a down payment to apply, and the IRS accepts roughly one in seven of the offers it receives.

An offshore account is a bank or brokerage account held at an institution outside your home country. Holding one is legal; the obligation that comes with it is reporting it. Failing to report a foreign account, not owning one, is what breaks the law.

The One Big Beautiful Bill Act is the popular name for Public Law 119-21, the reconciliation statute signed on July 4, 2025 that made most of the 2017 tax cuts permanent, created several deductions that expire after 2028, and rewrote federal student lending from July 1, 2026. The law carries no official short title, so the citation that identifies it unambiguously is Public Law 119-21.

The one-rollover-per-year rule limits an individual to one 60-day IRA-to-IRA rollover in any 12-month period, counted across every IRA the person owns combined, not one per account. Trustee-to-trustee transfers and Roth conversions don't count against it at all.

An ordinary dividend is a dividend taxed at your regular income tax rates rather than the lower rates for qualified dividends. On Form 1099-DIV, Box 1a "total ordinary dividends" is the gross figure and includes the qualified portion shown in Box 1b.

Ordinary income is income taxed at the regular graduated rates rather than at the preferential rates reserved for long-term capital gains and qualified dividends. It is the default character of income, and the tax code defines it by what it is not.

Original issue discount is the amount by which a debt instrument's stated redemption price at maturity exceeds its issue price. The tax law treats that gap as interest and, for most instruments, requires the holder to report it as it accrues each year rather than when it is paid.

Overtime pay is the higher rate a covered employee must receive for hours worked beyond 40 in a workweek: at least one and one-half times their regular rate of pay under the federal Fair Labor Standards Act.

An owner's draw is money a business owner takes out of the business for personal use. It is not a wage, not a deductible business expense, and has no tax withheld, and the owner is taxed on the business's profit whether or not any of it is drawn.

A partnership is a business with more than one owner that pays no income tax of its own. It reports its results to the IRS and hands each partner a share to report on their own return, whether or not any money was actually distributed.

The passive activity loss rules stop losses from activities you do not materially participate in, and from rentals whether you participate or not, from reducing your salary or business income. The losses are suspended and carried forward rather than lost, and a fully taxable sale of the whole interest releases them.

A pay stub is the itemized statement that comes with a paycheck, showing how gross pay became net pay through taxes and deductions. No federal law requires an employer to hand one out; whether you get one is set by your state.

Payroll taxes are the taxes charged on wages and collected through the payroll system. The IRS calls them employment taxes, and the category is broader than most people assume: some are split between worker and employer, some are paid by the employer alone, and one of them never appears on a paystub.

A per diem allowance is a flat daily payment an employer makes to cover an employee's lodging, meals and incidental expenses on business travel. Paid at or below the applicable federal per diem rate under an accountable plan, it satisfies the tax law's substantiation requirement without anyone collecting receipts.

A PFIC is a foreign corporation that is mostly passive, meaning most of its income or assets are investment-related. For a US investor it triggers a punitive tax regime, which is why owning a foreign mutual fund or ETF is a costly trap for Americans abroad.

The physical presence test is one of two ways to qualify for the foreign earned income exclusion. It is met by being physically present in a foreign country for at least 330 full days during any 12 consecutive months, and it turns entirely on counting days.

The portability election is the choice, made by the executor on a timely filed federal estate tax return, to pass a deceased spouse's unused estate tax exclusion to the surviving spouse. It is made by filing the return itself, and an estate that files nothing has not made it.

The premium tax credit is a refundable federal credit that pays part of the premium for health coverage bought through the Affordable Care Act Marketplace. It is computed month by month as the amount by which a benchmark silver plan's premium exceeds a set percentage of household income, and most people take it in advance as a monthly payment to the insurer.

A private activity bond is a state or local government bond whose proceeds mostly benefit or are repaid by a private party rather than the government itself. Its interest is taxable unless the bond fits one of the qualified categories in the tax code, and even then it may count toward the alternative minimum tax.

The pro-rata rule treats all of a person's traditional, SEP, and SIMPLE IRAs as one combined account for tax purposes, so any withdrawal or Roth conversion pulls out a proportional mix of pretax and after-tax money.

A progressive tax is one whose average rate rises as the amount being taxed rises, so a larger base pays not just more dollars but a larger share. It is a description of how a tax is structured, not a name written into the tax code.

A property tax is an annual charge based on the value of property, imposed by local government. Its defining feature is that it attaches to the property rather than to the person, which is what explains the lien, the tax sale, the escrow account, and why the obligation survives a change of owner.

A property tax appeal is a formal challenge to the value a local assessor has placed on a property, or to how the property has been classified. It contests one of the two numbers behind a tax bill, and it is the only one an individual owner can usually argue about.

A property tax assessment is the value a local assessor places on a property for tax purposes. It is not a market value, it is not what you paid, and in many places it is designed not to match either.

Provisional income is the income measure that determines how much of your Social Security benefit is taxable: your adjusted gross income (with a few exclusions added back), plus all of your tax-exempt interest, plus half of your Social Security benefits.

A QTIP trust pays all of its income to a surviving spouse for life while the first spouse to die decides who receives the principal afterward. It qualifies for the estate tax marital deduction only because the executor makes an irrevocable election on the estate tax return, and the price of the deferral is that the property is taxed in the surviving spouse's estate.

A qualified appraisal is a formal valuation of donated property that meets specific IRS requirements and is needed to support a charitable deduction for most gifts of property worth more than $5,000. It must be prepared by a qualified appraiser under generally accepted appraisal standards.

The qualified business income deduction lets the owner of a sole proprietorship, partnership, S corporation or rental business deduct up to 20 percent of that business's profit from taxable income. It is claimed by the owner rather than the business, and above an income threshold it is restricted or, for certain service businesses, removed altogether.

A qualified charitable distribution (QCD) is a direct transfer from an IRA to charity, available starting at age 70 1/2, that counts toward your required minimum distribution and never shows up in your adjusted gross income at all. Despite the similar name, it is unrelated to a qualified distribution, which is a Roth withdrawal that meets the age and five-year tests.

A qualified disclaimer is a refusal to accept an inheritance or a gift that meets the conditions of Internal Revenue Code section 2518, so the person refusing is not treated as having made a gift of it. The property is treated as though it had never been transferred to them at all.

A qualified distribution is a withdrawal from a Roth IRA or Roth workplace account that meets IRS requirements for coming out completely free of federal income tax and the early withdrawal penalty. Despite the similar name, it is unrelated to a qualified charitable distribution, which is an IRA-to-charity transfer available from age 70 1/2.

A qualified dividend is a dividend that is taxed at long-term capital gains rates instead of ordinary income rates. What makes one qualified is the payer and a holding period, and the statute achieves the lower rate not by writing a separate rate table but by folding the dividend into your net capital gain.

"Qualified education expenses" is the phrase the tax code uses to describe which college costs a particular tax benefit will cover. It does not have one meaning. Each benefit defines it separately, so the question cannot be answered until you name which benefit is being claimed.

Qualified medical expenses are the costs that a health savings account, flexible spending account, or similar arrangement can reimburse tax-free. They start from the definition of medical care in section 213(d) of the tax code, which is also the basis for the medical expense deduction, but the two rules diverge in ways that surprise people.

A qualified opportunity fund is the corporation or partnership through which capital gains are reinvested to obtain the opportunity zone tax benefits. Nobody approves one: the fund certifies itself on its own tax return, and it then has to keep passing a 90 percent asset test or pay a monthly penalty.

A qualified opportunity zone is a low-income census tract designated under the tax code so that capital gains reinvested in a fund operating there receive deferral and, after a long enough holding period, an exclusion of the fund investment's own appreciation. The program was made permanent in 2025 on a ten-year designation cycle, and the rules for money invested from 2027 onward differ from the rules for money already in.

The qualified overtime compensation deduction lets a worker deduct the premium part of federally required overtime pay, up to $12,500 a year, or $25,000 on a joint return, for 2025 through 2028. Only the amount above the regular rate counts, so on time-and-a-half it is the extra half rather than the whole overtime paycheck.

A qualified personal residence trust is an irrevocable trust holding a home, in which the owner keeps the right to live there rent-free for a fixed term and the house passes to the family afterwards. It moves the home out of the estate at a discounted gift-tax value, provided the owner outlives the term.

A qualified retirement plan is an employer plan that meets Internal Revenue Code section 401(a)'s requirements and, in return, gets favorable tax treatment: an employer deduction for contributions, tax-deferred (or tax-free, for Roth) growth, and ERISA's creditor protections. 401(k)s, pensions, and profit-sharing plans are all qualified plans.

Qualified small business stock is stock in a domestic C corporation that meets a specific set of tests in Internal Revenue Code section 1202. On a qualifying sale, a noncorporate shareholder can exclude some or all of the gain from federal income tax.

The qualified tips deduction lets a worker in a customarily tipped occupation deduct up to $25,000 of tips a year for 2025 through 2028. It reduces taxable income rather than removing the tips from tax altogether, so the tips still count for Social Security and Medicare tax, and the deduction phases out at higher incomes.

A qualifying disposition is a sale of shares from an incentive stock option or a qualified employee stock purchase plan that meets two holding periods, so the favorable statutory tax treatment applies. It is the outcome the holding rules are designed to reward.

Qualifying surviving spouse is the filing status that lets a widow or widower with a dependent child at home keep using the joint tax rates for the two years after the year a spouse dies. It gives the joint rate table and the joint standard deduction, but not the right to file a joint return.

A realized gain is the profit locked in the moment you sell or exchange an asset for more than its adjusted basis. Selling is what turns a paper profit into a realized one, and realization is the event federal tax law generally requires before any gain is taxed.

Reasonable compensation is the amount a business may deduct for what it pays someone for their work: what a similar business would ordinarily pay for similar services. The standard runs in both directions, and which direction bites depends on how the business is taxed.

Recharacterization is the election to treat an IRA contribution as having been made to the other kind of IRA all along, moving it by trustee-to-trustee transfer before the tax return is due. It applies to contributions only. Conversions have not been reversible since 2018.

In state income tax, a reciprocal agreement is an arrangement between two states under which a resident of one who works in the other pays income tax only to their home state on those wages. It is not automatic: the employee has to file a certificate of nonresidence with the employer.

Remittances are transfers of money sent by a person in one country to someone in another, most often to family. In US law the transaction has a precise name, the remittance transfer, and since the start of 2026 a 1 percent federal excise tax applies to those funded with cash or a similar physical instrument.

Remote work taxes are the state income tax complications that arise when you live in one state and work for an employer in another, which can expose the same income to two states' tax rules.

Renouncing US citizenship is the formal act of giving up US nationality by swearing an oath of renunciation before a US consular or diplomatic officer abroad. It is deliberate, in person, effectively permanent, and it does not by itself settle any US tax that is already owed.

Rental income is any payment received for the use or occupation of property, which the tax code reads far more broadly than the monthly check. Advance rent, lease-cancellation payments, expenses a tenant pays on the owner's behalf and property received instead of money are all rent.

The required beginning date (RBD) is the deadline for taking your first required minimum distribution: April 1 of the year after the year you reach the applicable age, or after you retire if you are still working and the plan allows it. It is a date, not an age, and it falls in the calendar year after the year that triggers it.

A required minimum distribution (RMD) is the amount the IRS makes you withdraw from pre-tax retirement accounts each year once you reach a set age, currently 73, rising to 75 for people born in 1960 or later. The withdrawal is taxed as ordinary income, and skipping it triggers an excise tax.

A resident alien is a non-citizen whom the United States taxes the same way it taxes its own citizens, on worldwide income. There are three ways to become one: holding a green card, spending enough days in the country, or electing the status in a first year.

Residential energy credits were the two federal tax credits for making a home more efficient or generating your own power: the energy efficient home improvement credit and the residential clean energy credit. Both were terminated at the end of 2025, and one of them left an unused balance that can still be carried forward.

A restricted stock award is a grant of employer shares that are issued to the employee immediately but can be taken back until they vest. Because the shares actually exist from day one, they are property under section 83, which is what makes a section 83(b) election possible.

Restricted stock units (RSUs) are a promise from an employer to deliver company shares on a vesting schedule; their full value is taxed as ordinary income the moment they vest, exactly like a cash bonus paid in stock.

Retiring abroad means spending retirement outside the United States, which lowers living costs for many people but does not end US tax filing and replaces Medicare with coverage a retiree has to arrange themselves.

"Room and board" is the live statutory name for the housing and food component of a 529 plan's qualified higher education expenses. It has been retired from the current Higher Education Act's cost of attendance definition, but survives in the tax code because Internal Revenue Code section 529 pins its cross-reference to the 2001 text of the education law.

A Roth conversion moves money from a pre-tax retirement account, such as a traditional IRA or 401(k), into a Roth account. You pay ordinary income tax on the converted amount now in exchange for tax-free growth, tax-free qualified withdrawals, and no lifetime required minimum distributions later.

A Roth IRA is an individual retirement arrangement funded with money you've already paid tax on. Investments grow tax-free, qualified withdrawals in retirement are tax-free, and the account never requires minimum distributions during your lifetime. The contribution limit is $7,500, plus a $1,100 catch-up at age 50.

Royalty income is what you are paid for someone else's right to use property you own, such as a mineral interest, a patent, a copyright, or your name and likeness. Whether it is taxed as business income or as investment income turns on a single question, and that question decides whether self-employment tax applies.

RSU tax withholding is the tax an employer takes out when restricted stock units vest, usually by keeping or selling a portion of the shares. The mechanism is reliable but the amount is often too low, because it is set at a flat rate that ignores the employee's real bracket.

The rule of 55 is an IRS exception that lets you take penalty-free withdrawals from your current employer's 401(k) or 403(b) if you leave that job during or after the year you turn 55.

An S corporation is a federal tax classification, not a type of business entity. A corporation or an eligible LLC elects it, and the effect is that profits are taxed on the owners' returns rather than at the entity level, and an owner-employee's pay splits into wages and distributions.

An S corporation election is the filing a corporation or eligible LLC makes, on Form 2553, to be taxed under Subchapter S so its profits pass through to the owners instead of being taxed at the entity level. It has a deadline, eligibility rules, and a cost to reverse.

A sales tax is a tax on a retail transaction, added to the price at checkout and collected by the seller. It is imposed by states and localities rather than by the federal government, so the rate and what it applies to change from one address to the next.

The SALT deduction is the itemized deduction for state and local taxes paid, covering real property tax, personal property tax, and either income tax or general sales tax. A dollar cap applies, and for higher earners the cap itself shrinks as income rises.

The Saver's Credit is a federal tax credit worth up to $1,000 per person ($2,000 for a couple) for contributing to a retirement account on a modest income. It is nonrefundable, so it can only reduce tax you already owe, and it is scheduled to be replaced after 2026 by a federal matching contribution called the Saver's Match.

Final maturity is the date a savings bond stops earning interest for good. It matters twice: the bond earns nothing after it, and under IRS rules the accrued interest becomes reportable in that year even if the bond has not been cashed.

Schedule A is the attachment to Form 1040 on which a taxpayer lists itemized deductions. Its official title is "Itemized Deductions", it has six sections and one total, and that total is compared with the standard deduction rather than added to it.

Schedule B is the attachment to Form 1040 that lists interest and ordinary dividends payer by payer. Its official title is "Interest and Ordinary Dividends", and its last section asks two questions about foreign accounts and foreign trusts that have nothing to do with the amounts above them.

Schedule C is the form that turns a business's receipts and expenses into one number, its net profit or loss, and carries that number onto the owner's personal tax return. Its full title is "Profit or Loss From Business (Sole Proprietorship)", though several filers who are not sole proprietors use it.

Schedule D is the attachment to Form 1040 that nets a year's capital gains and losses into one figure. Its official title is "Capital Gains and Losses", and the rate that figure is taxed at is computed on a worksheet in the instructions rather than anywhere on the schedule itself.

Schedule E is the attachment to Form 1040 for income that is not wages and not an active business. Its official title is "Supplemental Income and Loss", and it collects rental real estate, royalties, and the income that arrives on a Schedule K-1 from a partnership, an S corporation, an estate or a trust.

A school district income tax is an income tax levied by a school district on the people who live in it, adopted by a vote of the district's electors. It is not the school levy on your house, and in Ohio, whose scheme is the fullest, it reaches residents only, so working inside a district creates no liability at all.

A second home is a residence other than the one you mainly live in. The phrase has no single meaning: the tax code, the mortgage market and FHA each define it differently, and the same property can be a second home for your interest deduction and not a second home for the loan that bought it.

The section 121 exclusion keeps up to $250,000 of gain on the sale of a principal residence out of gross income, or $500,000 for a married couple filing jointly. It requires owning and using the home as a main residence for periods totaling two years within the five years before the sale, and it can be used repeatedly rather than once in a lifetime.

The Section 179 deduction is an election that lets a business write off the cost of qualifying equipment and software in the year it is placed in service, up to an annual dollar ceiling and never beyond the income the business actually earned.

The SECURE 2.0 Act of 2022 is a federal law containing roughly 90 separate retirement provisions — a later age for required withdrawals, larger catch-up contributions, mandatory Roth catch-ups for high earners, 529-to-Roth rollovers and more, whose effective dates are staggered from 2023 through 2033.

The self-employed health insurance deduction lets self-employed people deduct the premiums they pay for medical, dental, and qualifying long-term care coverage directly against income, without having to itemize.

Self-employment tax is the Social Security and Medicare tax paid by people who work for themselves, covering both the employee and the employer share. It is 15.3 percent, but it is charged on 92.35 percent of business profit rather than on the whole of it, and half of the resulting tax is deductible.

Sell-to-cover is a method of handling equity compensation in which just enough shares are sold, at vesting or exercise, to raise the cash for the taxes or the cost, and the rest of the shares are kept. It sits between selling everything and paying entirely out of pocket.

Single is the federal filing status of an unmarried person who does not qualify for a better one. It is defined by exclusion rather than by a test of its own, which is why it is the last of the five statuses to be considered rather than the first.

Social Security abroad refers to receiving US Social Security benefits while living outside the United States. Most US citizens can be paid anywhere, with a short list of restricted countries, while non-citizens face additional rules about being paid overseas.

Social Security tax is the payroll tax that funds Social Security benefits. Employees pay 6.2% of wages and their employer pays a matching 6.2%, but only on earnings up to an annual ceiling, $184,500 for 2026. The self-employed pay both halves themselves. Its formal name is the OASDI tax, for Old-Age, Survivors, and Disability Insurance.

The Social Security wage base is the annual ceiling on earnings subject to the 6.2% Social Security tax, $184,500 for 2026. Its formal name is the contribution and benefit base, because the same figure caps both the tax you pay and the earnings that count toward your benefit.

A sole proprietorship is an unincorporated business owned by one person, with no legal existence separate from that person. It is what a business is by default, since nothing has to be filed to create one, and it is the reason the owner's personal assets stand behind the business's obligations.

Specific share identification is choosing exactly which shares to sell out of a position built up over multiple purchases, instead of letting the default rule decide for you. It lets you control the size and character of the gain or loss a sale produces, but only if you make the identification before the trade settles.

Staking is committing proof-of-stake cryptocurrency to help operate and secure a blockchain network, earning rewards in return. The rewards are taxable as ordinary income when you gain control of them.

The standard deduction is a flat amount every filer can subtract from income before tax is calculated: $16,100 for single filers and $32,200 for married couples filing jointly in 2026, taken instead of itemizing individual deductions.

The standard mileage deduction lets a self-employed person deduct the cost of driving for business using a set rate per mile, instead of adding up the actual costs of running the vehicle. The IRS publishes the rate, and choosing a method in the first year has lasting consequences.

A state income tax is a tax a state charges on income, separate from and in addition to the federal one. Two rules decide which state may tax a given dollar: a state may tax its residents on everything, and it may tax nonresidents on income sourced within its borders.

State tax residency is whether a state treats you as a resident for income tax, which decides whether it can tax all of your income or only the income you earned inside its borders. It turns on where your permanent home is and how many days you spend in the state.

The statute of limitations on taxes is not one deadline but three: the period in which the IRS may assess additional tax, the longer period in which it may collect what it has assessed, and the period in which a taxpayer may claim a refund. Each runs from a different event.

The step transaction doctrine lets the IRS and the courts treat a series of separate legal steps as one transaction, and tax it accordingly, where the steps were really parts of a single plan. Three alternative tests decide when it applies, and satisfying any one of them is enough.

Step-up in basis resets the cost basis of inherited assets to their fair market value on the owner's date of death. Decades of unrealized capital gains simply disappear for income tax purposes, making it one of the most powerful features in the tax code for families passing down appreciated assets.

Exercising a stock option is the act of paying the strike price to convert the option into actual shares. How you fund that payment, and whether you keep or sell the shares, are separate decisions that carry most of the tax and risk.

The student loan interest deduction lets a taxpayer deduct up to $2,500 of interest paid during the year on a qualified education loan, without itemizing. It phases out as income rises, and four eligibility conditions in the statute disqualify people who assume they are covered.

Substance over form is the judicial principle that a transaction is taxed according to what actually happened rather than according to the labels and documents the parties gave it. It runs asymmetrically: the taxpayer is generally held to the form they chose, while the government is not required to accept it.

The substantial presence test is the day-count rule that decides whether a non-citizen becomes a US tax resident. It requires at least 31 days in the United States this year and a weighted three-year total of at least 183 days.

Supplemental wage withholding is the set of rules an employer uses to withhold federal income tax from pay that is not regular wages, including commissions, severance, back pay, taxable fringe benefits and equity compensation. Three methods exist, and which one an employer may use depends on facts the employee never sees.

A tax audit is the IRS reviewing a filed return to test whether income, deductions and credits were reported correctly. The agency's own word for it is examination, some examinations are handled entirely by mail, and the process has a fixed sequence of letters with deadlines attached to each one.

Tax avoidance is arranging your affairs so that the law imposes less tax, and it is lawful. What makes it a subject in its own right is the boundary: courts and the Code police transactions whose only real content is the tax result, with penalties that reach positions that were argued in good faith and still lost.

A tax bracket is a band of taxable income to which a single tax rate applies. Congress writes the bands into the tax code, and the Treasury Secretary is required to publish inflation-adjusted versions of them every year.

A tax credit reduces your tax bill dollar for dollar, rather than reducing the income the bill is calculated from. Whether an unused credit is paid out to you, carried to another year, or simply lost depends on which subpart of the tax code the credit was written into.

Tax Day is the popular name for the due date of the federal individual income tax return. The Code sets it at the 15th day of April for a calendar-year filer and then moves it when that day falls on a weekend or a legal holiday in the District of Columbia, which is why a local Washington holiday can shift the deadline for everyone.

A tax deduction reduces the amount of income you are taxed on, so what it saves you depends on your tax rate rather than on the size of the deduction alone. Where the deduction sits on the return matters as much as how large it is.

Tax deferral means postponing tax on income or gains to a later year rather than paying it now. The money that would have gone to tax stays invested and compounds, which is where the benefit comes from, but deferral is not forgiveness, and the bill still arrives.

Tax domicile is your one permanent legal home, the place you intend to return to. It is established by physical presence combined with intent, it determines which state can tax all of your income and settle your estate, and you keep it until you deliberately replace it.

Tax drag is the reduction in your long-run investment return caused by taxes paid along the way, on dividends, interest, and capital gains distributions, rather than only at the eventual sale. It is a cost that compounds year after year in a taxable account, in a way that does not apply to a tax-advantaged retirement account.

Tax evasion is the federal crime of willfully attempting to evade or defeat a tax, or its payment, under Internal Revenue Code section 7201. It is a felony requiring an affirmative act, a tax actually owed, and willfulness, which is what separates it from the misdemeanor of simply failing to file.

A tax extension is six more months to file an individual federal return, granted automatically on request with no reason required. It does not give you more time to pay, and the payment deadline stays where it was.

Tax identity theft is the use of someone else's identifying information inside the tax system, most often to file a return and collect a refund, or to obtain employment under their Social Security number. Federal law gives a victim specific rights, including notification and a single point of contact at the IRS.

A tax inflation adjustment is the annual revision of dollar amounts in the tax law so that inflation alone does not change a taxpayer's real position. It is one statutory machine in section 1(f), applied by cross-reference to dozens of separate provisions and delivered each autumn in a revenue procedure. What it does not reach is the more useful half of the subject.

A tax levy is the IRS actually taking property to satisfy an unpaid federal tax debt, as distinct from the lien, which is only a claim against it. It reaches wages, bank accounts and most other assets, and it is preceded by notices that carry a hearing right.

A federal tax lien is the government's legal claim against everything a taxpayer owns, securing an unpaid federal tax debt. It arises automatically by operation of law, and the public notice the IRS files about it is a separate thing from the lien itself.

Tax planning is arranging your finances so that a future year's tax is lower, using the choices the law actually gives you about timing, character and whose return income lands on. It is a different activity from tax preparation, which reports a year that is already over.

Tax preparation is the work of assembling a completed year's records and filing an accurate return. Anyone paid to do it is a tax return preparer under the tax code, and the striking fact about the field is how little the federal government requires of one.

A tax refund is the return of an overpayment: the amount by which what you already paid in during the year exceeded what your return says you owed. It is your own money coming back, and several kinds of debt can be paid out of it before it reaches you.

A tax return is the document a taxpayer files to report the items the law requires and compute the tax on them, signed under penalties of perjury. Whether you have to file one turns on gross income, not on how much tax you would owe.

Tax scams are frauds that use the tax system as their cover story, aiming at one of three things: your refund, your identity, or a direct payment. The IRS publishes an annual list of the ones it is seeing, called the Dirty Dozen, and the list changes every year.

A tax shelter is a defined term in the Internal Revenue Code, and the Code defines it in at least three places for at least three different purposes. The core definition turns on whether a significant purpose of an arrangement is avoiding or evading federal income tax, and one of the wider definitions catches ordinary small partnerships that were never designed to shelter anything.

A tax transcript is an IRS-generated summary of what the agency has on record for a tax year. "Tax transcript" names a family of five free products, not one document, and none of them is a photocopy of the return you filed.

A tax treaty is a bilateral agreement between two countries that decides which one gets to tax various kinds of cross-border income and reduces the risk of the same income being taxed twice. For US citizens, a saving clause sharply limits how much the treaty actually helps.

Tax withholding is money a payer removes from a payment and sends to the government on your behalf, before you ever see it. It is an estimate of a liability nobody computes until you file, and it is not one rule but a family of separate rules that differ by the kind of payment.

The Tax Withholding Estimator is the IRS's free online tool for checking whether the federal income tax coming out of a paycheck or pension payment is close to the right amount for the year. Its output is a pre-filled Form W-4 or Form W-4P, and it only works for people who have wages or a pension with withholding.

A tax year is the annual accounting period a taxpayer computes income on. The Code calls it a taxable year, and it is either a calendar year, a fiscal year ending on the last day of some other month, or a short period of less than twelve months. Almost every individual uses the calendar year, but by default rather than by prohibition.

A tax-advantaged account is any account that gets special treatment under the tax code: a deduction going in, no annual tax while the money grows, tax-free qualified withdrawals, or some combination of the three. In exchange, the account comes with contribution limits and rules about when and why you can take the money out.

Tax-equivalent yield is the pre-tax yield a taxable bond would have to pay to leave an investor with the same after-tax income as a given tax-exempt bond. It is the tax-exempt yield divided by one minus the investor's marginal tax rate.

Tax-exempt income is income that federal law excludes from gross income altogether, so it never enters the tax calculation. Municipal bond interest, gifts and inheritances, and most life insurance death benefits are the familiar examples.

Tax-free growth means the earnings inside certain accounts are never taxed, not merely taxed later. It takes two separate statutory steps to produce, the account itself being exempt from tax and the eventual distribution being excluded from gross income, and it fails if the second condition is not met.

Tax-gain harvesting is deliberately selling an appreciated investment in a taxable account during a low-income year to realize the gain at a low or zero rate, then usually buying it straight back. The point is not the sale but the higher cost basis it leaves behind.

Tax-loss harvesting (TLH) is selling an investment in a taxable account for less than you paid to capture the loss for tax purposes, then reinvesting in a similar (but not substantially identical) holding so you stay invested.

Taxable income is the figure the tax rate schedule is actually applied to: what is left of your income after every deduction the law allows has come out. It is the last rung of the income ladder, below gross income and below adjusted gross income.

Tipped income is money a worker receives as tips, and it is taxable wages. Tips are always subject to Social Security and Medicare tax, and workers must report them to their employer, separate from the temporary "no tax on tips" income-tax deduction.

A totalization agreement is a treaty between the United States and another country that keeps a cross-border worker from paying Social Security taxes to both countries on the same earnings, and lets a worker combine credits from both systems to qualify for benefits.

A traditional IRA is the pre-tax flavor of the individual retirement arrangement: contributions may be tax-deductible in the year you make them, investments grow tax-deferred, and every withdrawal in retirement is taxed as ordinary income. Required withdrawals begin at 73, or 75 for those born in 1960 or later.

A Trump account is a new type of individual retirement account for a child under 18, created by Internal Revenue Code section 530A. Up to $5,000 a year can go in with no deduction, an employer can add up to $2,500 tax-free, a federal pilot deposits $1,000 for children born from 2025 through 2028, and nothing can come out before the year the child turns 18.

The unlimited marital deduction lets a U.S. citizen leave or give an unlimited amount of property to their spouse free of federal estate and gift tax. It defers tax rather than eliminating it: whatever passes to the spouse tax-free becomes part of that spouse's own estate, taxable, if at all, only at the second death.

An unrealized gain is the amount by which something you still own is worth more than its adjusted basis. It is a measurement rather than an event, no tax is due on it, and there are four quite different ways it can end, only one of which involves paying tax on it.

A use tax is the tax a buyer owes directly to their own state on something bought without sales tax and then used, stored or consumed there. It is the same rate as the sales tax that was not charged, and the obligation to report and pay it sits with the buyer rather than the seller.

A valuation discount is a reduction applied to the value of a fractional business or property interest for gift and estate tax purposes, on the ground that the interest cannot control the enterprise or cannot readily be sold. It is the most contested number in transfer tax.

Volunteer expenses are the unreimbursed out-of-pocket costs a taxpayer pays while donating services to a qualifying charity, and they can be deducted as a charitable contribution. The value of the time and services themselves is never deductible; only the money the volunteer actually spends is.

Volunteer Income Tax Assistance is an IRS program under which trained volunteers prepare federal tax returns free of charge for people on lower incomes, people with disabilities and people with limited English. It runs alongside a separate program, Tax Counseling for the Elderly, aimed at people aged 60 and over.

The wash sale rule disallows a loss on the sale of stock or securities if you acquire substantially identical holdings within 30 days before or after the sale. It does not destroy the loss in most cases: it moves the amount into the basis of the replacement shares, so the deduction is postponed rather than forfeited.

A withdrawal strategy is the plan for which accounts you take retirement income from, and in what order. It is a tax decision rather than an investment one, and it is separate from how much you withdraw each year, which is the safe withdrawal rate question.

Worker misclassification is treating someone who is legally an employee as an independent contractor. The classification itself is decided under whichever body of law is asking; misclassification is the name for getting it wrong, and it carries its own machinery of taxes, penalties and remedies.

A zero-coupon bond pays no interest along the way. It is sold for well below its face value and pays the full face value on one date, at maturity, so the entire return is the difference between the two.