At 68, Everyone Told Him to Pay Cash for the Downsized Home. Social Security Helped Him Qualify for a Mortgage Instead.
The conventional wisdom says retirees should never carry a mortgage, but a lender's little-known calculation can make a Social Security check worth more on paper than it is in the mailbox.
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The Advice That Sounded Safest
Picture a 68-year-old selling the family house and buying a smaller home for $350,000. He has enough equity to pay cash, but doing so would leave much less available for repairs, travel, healthcare, and the ordinary surprises of the next 20 years. Everyone gives him the familiar advice: retirees should not carry mortgages. Pay cash, eliminate the payment, and sleep better.
Then a lender runs his application using the $2,800 Social Security benefit he receives every month. Because some or all of that benefit is not subject to federal income tax, the lender may count more than $2,800 when calculating how much mortgage he can support.
The check did not get bigger. On the underwriting worksheet, however, part of it did.
Why Social Security Can Count for More
Mortgage lenders compare monthly debts with qualifying monthly income. Because taxable wages lose part of their value to income taxes, certain nontaxable income can be adjusted upward to create a more comparable figure. Lenders call this “grossing up” the income. Fannie Mae’s latest conventional-loan guidelines provide a useful example. A lender may treat 15% of Social Security income as nontaxable without obtaining additional proof and increase that portion by 25%.
For someone receiving $2,800 a month, the standard calculation looks like this:
- Social Security benefit: $2,800
- Amount presumed nontaxable: $420
- Gross-up on that portion: $105
- Qualifying monthly income: $2,905
That adjustment alone may not transform the application. If tax documents establish that more than 15% of the benefit is nontaxable, however, the lender may be able to gross up a larger portion. Suppose his most recent tax return shows that the entire $2,800 monthly benefit was nontaxable. A 25% gross-up could allow the lender to use $3,500 as qualifying income. That extra $700 can materially improve his debt-to-income ratio.
Loan programs and documentation requirements differ, so the adjustment should never be assumed. The important point is that Social Security is legitimate mortgage income, and its nontaxable portion may carry additional weight.
The Tax Return Decides How Large the Boost Is
Social Security benefits can be entirely nontaxable, partly taxable, or mostly taxable depending on the retiree’s other income. Pension payments, IRA withdrawals, interest, dividends, and capital gains can all affect the result. That creates an interesting contrast. A retiree living primarily on Social Security may receive a larger mortgage gross-up than someone collecting the same benefit but also taking substantial taxable IRA distributions. The lender will still examine credit, existing debts, property taxes, insurance, and the proposed housing payment.
Social Security does not qualify someone for any mortgage they want. It can simply make the income side of the application stronger than the retiree expected. Age itself is not a reason to reject the income. For Social Security retirement benefits received on the borrower’s own work record, Fannie Mae generally does not require proof that the income will continue unless the lender has a specific reason to question it. A paycheck may end with a job. A retirement benefit is built to continue.
A Mortgage Is a Tool, Not the Answer
Qualifying for a mortgage does not automatically make borrowing the better decision. Interest and closing costs are real, and invested money does not come with a guaranteed return. A retiree who can pay cash while retaining ample reserves may reasonably prefer the certainty of having no payment. The mortgage becomes worth considering when paying cash would leave too much wealth trapped in the house.
Keeping $100,000 or $150,000 liquid can prevent a future roof replacement, market downturn, or large tax bill from forcing an expensive home-equity loan. It may also allow the retiree to avoid selling investments all at once or taking a large taxable IRA withdrawal. The useful comparison is not simply mortgage rate versus expected investment return. It is the value of a paid-off home versus the value of a smaller payment, accessible reserves, and the ability to change course later.
What to Ask Before Writing the Check
Three questions belong in the conversation:
- How much Social Security income will the lender use, and how much of the benefit can be grossed up under this particular loan program?
- After paying cash, how much accessible money would remain for several years of expenses and major repairs?
- What would the mortgage cost after interest, closing expenses, property taxes, and insurance—and would the payment remain comfortable without depending on strong market returns?
Bring the Social Security award letter or benefit statement, recent tax returns, and current asset statements. Then ask the lender to show the qualifying-income calculation rather than simply announcing whether the loan passed. A paid-off house can feel like safety. So can having money that is not locked inside it. The right answer depends on which kind of security the retiree needs more.
Contact [email protected] for any questions or corrections.
Gerelyn Terzo is the author of dividend investing handbook "Dividend Investing Strategies: How to Have Your Cake & Eat It Too." A veteran financial journalist, she covers agri-finance for outlets like Global AgInvesting and the broader stock market and personal finance for 24/7 Wall Street. She began at CNBC and later helped launch Fox Business in New York. Gerelyn currently resides in Woodland Park, Colorado and dabbles in nature photography as a hobby.
