FHA Social Security income and the gross up

What counts as Social Security income

The Handbook defines Social Security Income, along with Supplemental Security Income, as income received from the Social Security Administration other than disability income. It sits in the retirement income group, next to pensions and IRA or 401(k) distributions. Because the definition carves out disability income, a borrower who receives disability benefits should ask the lender which section applies rather than assume the rules below carry over.

The three-year continuance test

The lender must verify and document that you receive the income and that it is likely to continue for at least three years from the date of case number assignment. If any income from the agency is due to expire within three years of that date, it may not be used to qualify. If the award letter shows no expiration date, the lender must treat the income as effective and reasonably likely to continue, and may not ask you for further documents about continuance. If a letter shows a future start date, the income counts only from that date.

Documents the lender collects

To verify receipt, the lender needs any one of these: tax returns, your most recent bank statement showing the deposit, a proof of income letter (often called a budget letter or benefits letter), or a copy of Form SSA-1099 or 1042S. To document continuance, it also needs a copy of your last Notice of Award letter stating the agency's determination, or an equivalent document establishing the award. Keeping the award letter and the current benefit letter together makes this step quick.

How much income is used

The calculation is direct: the lender uses the current amount of Social Security income you receive. No averaging over two years applies, so a recent cost-of-living increase is reflected as soon as it shows on the benefit letter. The unusual step is the gross up, which turns on how much of that benefit is not subject to federal tax.

Grossing up nontaxable income

The Handbook lists income not subject to federal taxes, including some portion of Social Security income, some federal and state government retirement income, Railroad Retirement benefits, certain disability and public assistance payments, child support, Section 8 Housing Choice Vouchers and military allowances. For these, the lender may add the continuing tax savings to your gross income. The lender must document the amount being grossed up and the tax rate it relies on. The percentage added cannot exceed the greater of 15 percent or the appropriate tax rate for that income amount, based on your tax rate for the previous year. If you were not required to file a return for the previous period, the lender may gross up by 15 percent. No further adjustment for the number of dependents is allowed.

A worked example

Say $1,200 of your monthly Social Security is nontaxable and you were not required to file last year. The maximum gross up is 15 percent, which is $180, so up to $1,380 a month counts for that income. If last year's federal rate was 22 percent, the greater of 15 and 22 is 22, so the add-on can reach $264 and the figure becomes $1,464. If your rate was only 10 percent, the 15 percent floor still applies. The checker applies this ceiling arithmetic. It assumes you already know which part of your benefit is nontaxable; your tax return or the SSA-1099 shows what portion was taxable.

Why it helps and its limits

Grossing up raises qualifying income without any more money arriving in your account, which lowers both ratios on the debt-to-income matrix. It is permission, not entitlement: the word the Handbook uses is "may", and the lender must support the figure. It also does not enlarge taxable income. Combine Social Security with other documented income, such as rental income or earnings from a part-time job, and the lender totals the sources before computing ratios.

Sources

• HUD Handbook 4000.1, FHA Single Family Housing Policy Handbook, Update 18 PDF: Underwriting the Borrower Using the TOTAL Mortgage Scorecard, Retirement Income: Social Security Income, and Nontaxable Income (Grossing Up), Handbook pp. 238 and 251 (heading Income Requirements (TOTAL) (11/10/2026)(04/10/2025)). Read November 2, 2026.
• HUD, Single Family Housing Policy Handbook 4000.1 information page. Read November 2, 2026.

Text read: HUD Handbook 4000.1, FHA Single Family Housing Policy Handbook, the clean Update 18 PDF that HUD links from its Handbook 4000.1 information page (HUD lists it as the August 12, 2026 update). Section headings carry their own effective dates, given above for this page. Confirm current dollar limits and premium rates with an FHA-approved lender. This page paraphrases the Handbook and does not replace it. Page numbers cited are the Handbook's own and may be approximate; use the section headings to locate the text.