Four levers, and the difference between two of them is the whole page. A modification can reduce the interest rate, extend the term so the remaining balance is spread over more months, capitalize the arrears by folding missed payments and advanced escrow into the principal balance, and defer principal, moving part of the balance into a non-interest-bearing lump that comes due when the loan is paid off, refinanced or the home is sold.
Principal forbearance, which is what that fourth lever is, is not principal forgiveness. The deferred amount is still owed; it has simply stopped accruing interest and stopped being part of the amortizing balance. Forgiveness, where a lender actually writes off part of the debt, is uncommon, and it has a tax consequence that a borrower should settle before signing: forgiven debt is generally income unless a statutory exclusion applies, and the exclusion people assume covers a home mortgage no longer reaches discharges after 2025. The cancellation of debt page sets out precisely what survives and what does not.
The trade being offered is usually payment relief for total cost. Capitalizing arrears increases the balance. Extending the term stretches it over more payments. Both lower the monthly payment and both increase the total interest paid over the life of the loan, and a modification frequently does both at once. That is not an argument against modifying, because for a borrower facing foreclosure the alternative is not a cheaper loan, it is losing the house. It is an argument for knowing which trade is being made rather than reading only the new payment.
Regulation Z draws a line worth knowing. Under 12 CFR 1026.20(a)(4), a change in the payment schedule or in collateral requirements resulting from the consumer's default or delinquency is not treated as a refinancing, and therefore does not require new Truth in Lending disclosures, "unless the rate is increased, or the new amount financed exceeds the unpaid balance plus earned finance charge and premiums for continuation of insurance." So most workout modifications sit outside the refinancing rules, which is exactly why they carry no new closing costs, no new appraisal in the ordinary case, and no new right of rescission. But the exception is real: a modification that raises the rate, or that capitalizes more than the unpaid balance and earned finance charge, is a refinancing under the regulation, with the disclosure consequences that follow.
The procedural protections are federal and specific. Under 12 CFR 1024.41(c)(1), where a servicer receives a complete loss mitigation application more than 37 days before a foreclosure sale, it must within 30 days evaluate the borrower for all available options and notify them in writing which, if any, it will offer. Under (d), a denial for any trial or permanent loan modification option must state the specific reason or reasons for each option denied. Under (h)(1), where the complete application arrived 90 days or more before a foreclosure sale, the servicer must permit an appeal of a denial for any trial or permanent loan modification program available to the borrower, and (h)(2) gives the borrower 14 days to make that appeal after the servicer provides its offer notice. The appeal must be reviewed by different personnel than those who made the original evaluation, per (h)(3), and the servicer must give its determination within 30 days, per (h)(4). That determination is not subject to further appeal. The word doing the work in all of this is complete: the protections attach to a complete application, which is why the single most useful thing a borrower can do is get the file complete and get the date documented.
The trial payment plan, and why it exists. Servicers commonly require a trial period of payments at the proposed modified amount before making the change permanent. From the investor's side it is evidence the new payment is actually sustainable; from the borrower's side it is a period in which the modification is not yet binding on anyone. Regulation X recognizes trial plans expressly. Under 12 CFR 1024.41(e)(2)(ii), a borrower who does not meet the servicer's requirements for accepting a trial loan modification plan but who submits the payments that would be owed under it within the deadline must be given a reasonable additional period to satisfy the remaining requirements. Missing trial payments is the commonest way a modification that was going to be approved collapses.
FHA's current framework, which changed on 1 October 2025. For an FHA-insured loan the options are named and sequenced by HUD, and the framework in force today is the one installed by Mortgagee Letter 2025-12. That letter states that FHA-HAMP, and the previously published Standard Pre-Foreclosure Sale and Standard Deed-in-Lieu options, "will expire on September 30, 2025," along with the COVID-19 Recovery options, with the remainder of the letter effective 1 October 2025. Two modification options sit in the resulting waterfall: a Standalone Loan Modification, considered where it alone can reach the target payment, and a Combination Loan Modification and Partial Claim where it cannot. Ahead of both sits a Standalone Partial Claim for a borrower who attests they can resume their current payment; behind them sit a Payment Supplement and then the home disposition options. There is also an Outside of the Waterfall Loan Modification. The same letter moved the limit on permanent home retention options from one every 18 months to one every 24 months. Mortgagee Letter 2026-08, dated 23 June 2026, updates the trial payment plan rules and the limits on repeated re-reviews, and must be implemented no later than 21 September 2026; it does not change the waterfall or the option names. Anyone citing FHA-HAMP as an available option today is citing a program that no longer exists.
The credit consequence is real and is different from a foreclosure's. What a furnisher reports is that the account terms were modified, and during a trial period that the borrower is paying under a partial payment agreement, alongside whatever delinquency preceded the modification. Anyone describing a precise effect on a credit score is describing the output of private scoring models that do not publish their treatment of these codes. The checkable statement is what gets reported, not what the number does.
One warning that belongs on every page about this. Modification assistance is free from the servicer and from HUD-approved housing counseling agencies, and advance-fee "modification specialists" are a long-running fraud category. The debt relief scam page covers how they work.