First Job Finances

First-job finances is the practical financial work a new earner handles in the first months of employment: setting the withholding right, choosing employer benefits, starting retirement contributions, learning to live on a paycheck, and, for anyone with student loans, starting to repay them. It is not a single decision but a sequence of small ones, and the first three or four have disproportionate long-term effects.

The first paycheck is a compressed course in the tax system. A new employee's W-4 controls federal income tax withholding, and the redesigned form uses filing status, dependents, other income and extra withholding rather than the "allowances" it used before 2020. Getting the W-4 approximately right avoids both a big April refund (an interest-free loan to the government) and an underpayment penalty. Social Security tax runs at 6.2% of wages up to the Social Security wage base (statutory), and Medicare at 1.45% on all wages. State income tax withholding also comes off the stub in most states. The gross-to-net difference — usually 25% to 35% for a mid-career professional, higher in high-tax states — is worth understanding before setting a budget against the gross number.

The employer match is the single most valuable line on the benefits menu. A typical match is 50% of the employee's contribution up to 6% of pay — meaning the employer pays 3% of pay if the employee contributes 6%. Any employee not contributing up to the match is voluntarily taking a smaller salary than they were offered. Employer contributions vest according to the plan's schedule (which can be immediate, graded, or a cliff of up to three years for a match); vested employer money follows the employee at job change, unvested money does not. Elective deferrals can be traditional (pre-tax) or Roth (after-tax); the choice depends on whether the employee's current marginal tax rate is higher or lower than their expected retirement marginal rate, and at the start of a career a Roth election is often the better call because the current rate is likely the lowest it will be for a long time.

A starter emergency fund comes before almost everything else. The classic three-to-six months of expenses target is a destination, not a starting point. A first month of essential expenses in a savings account is the minimum practical cushion, and it can be built with a few weeks of aggressive prioritisation on a new salary. The point is not the amount; it is separating the fund from the checking account so it does not get spent on ordinary purchases.

Credit takes time and is easier to build deliberately. A first credit card used for small predictable purchases (a gym membership, a streaming subscription) and paid in full every month builds payment history and utilisation — the two largest components of a credit score — faster than any other strategy. Opening several cards at once, carrying a balance to "build credit", and closing older cards are the three commonest mistakes. Student loans in good standing count as installment credit on the report and help the mix.

Student loans have a six-month grace period. Federal student loan payments start six months after graduation or after dropping below half-time enrollment. That six-month window is the time to read the repayment plan menu carefully, because the default plan after that window can commit the borrower to a plan that forfeits Public Service Loan Forgiveness eligibility if they were counting on it. Loans made on or after July 1, 2026, have a materially changed plan menu under OBBBA; borrowers should specifically confirm what plan they will default into before the grace period ends.

Other benefits worth checking during the first open window. Health-plan choice (high-deductible with an HSA vs a lower-deductible plan; the arithmetic favours the HDHP-plus-HSA for most healthy young employees). Dental and vision if offered. Short-term and long-term disability — a young earner's most valuable asset is their earning capacity, and group long-term disability at group rates is the cheapest way to protect it. Employer life insurance up to one or two times salary is usually free, and enough for a new hire without dependents.

A workable first-job checklist runs in three phases. Week one, the paperwork: W-4 (with a first pass at withholding and a reminder to revisit after the first three paychecks), direct deposit setup, and the initial benefits election window (usually 30 days). The benefits window covers health plan choice, dental/vision, life and disability, HSA or FSA if eligible, and the 401(k) enrollment with contribution rate and a traditional-vs-Roth choice. Week two through month three: a starter budget built against take-home rather than gross pay, a starter emergency fund target, and a first credit card if the new hire does not have one. Months three through twelve: raise the savings rate as the paycheck starts to feel normal, revisit the W-4 after the first three-to-four paychecks, and set up student-loan repayment before the grace period ends.

A hypothetical example. Jordan starts a first job at a $72,000 salary with a 50% match on the first 6% of contributions. Jordan contributes 6% ($4,320 a year), the employer contributes 3% ($2,160), and the combined $6,480 grows tax-deferred inside a traditional 401(k). At an assumed 7% long-run real return over 42 years to age 65, that first year of contributions alone grows to about $107,000 in today's dollars. If Jordan increases the contribution to 10% at year one and never raises it further, the annual $7,200 employee plus $2,160 employer contribution grows to a retirement balance of roughly $2.2 million in today's dollars by 65 at the same assumed rate — illustrative, not promised, but it shows why the first-job savings rate is the most consequential single decision a new earner makes.

Do first

• Set the W-4 well, then revisit it after three pay periods and use the IRS Tax Withholding Estimator to fine-tune.
• Enroll in the 401(k) at least to the match, ideally 10–15% of pay including the match; pick Roth or traditional deliberately.
• Choose the health plan by running the numbers on the two options rather than picking the lower-deductible plan by reflex; HDHP with HSA usually wins for healthy young employees.
• Add group short-term and long-term disability if offered; the group underwriting bar is low and the rates are cheap.
• Open one credit card, use it for a small recurring charge, pay it in full every month.

Skip or defer

• Company stock plans until the base savings, emergency fund and debt payoff are in place. An ESPP with a real discount can be worth using once the basics are covered.
• Voluntary life insurance beyond one to two times salary for a single new hire; the individual-market rates at young ages are usually cheaper if life insurance becomes needed later.
• "Getting into investing" beyond the 401(k) until the emergency fund and any high-rate debt are handled.
• Every subscription and product marketed at new earners; the default of most of them is a small monthly cost that adds up quickly.