Mortgage Rates Hit 7.4%, a Nearly 3-Year High. A Retiree Trading His 3% Mortgage for a Smaller Loan Could Pay $466 More a Month

Mortgage rates have climbed to their highest level in nearly three years, with Freddie Mac reporting a 7.4% average for a 30-year loan on October 8. For retirees considering downsizing, that could turn a move meant to save money into a surprisingly expensive decision.

Picture a retiree in a four-bedroom house with a 3% mortgage locked in years ago. The kids have moved out, the yard is a chore, and a newer, smaller home looks like a way to cut monthly bills. But trading the old mortgage for a new one could leave less money from each Social Security check, even with a smaller house.

How a Smaller Mortgage Can Produce a Bigger Payment

Start with a $300,000 loan at 3%. On a 30-year schedule, principal and interest come to about $1,265 a month.

Now shrink the loan to $250,000 but price it at 7.4%. The payment rises to about $1,731.

That’s roughly $466 more each month, or nearly $5,600 a year, even though you borrowed $50,000 less. Your actual payment depends on your remaining balance, the years left on your current loan and how much you put down on the new place. The pattern still holds: the interest rate moves the payment more than the loan size does.

Why Downsizing Can Squeeze a Social Security Budget

Social Security’s yearly cost-of-living adjustment, or COLA, follows inflation in everyday prices. It discounts whether you just switched a 3% loan for a 7% one. The 2027 adjustment is currently projected at about 3.5%.

On a $2,000 monthly benefit, that would add about $70. It’s a welcome increase, but nowhere near enough to cover another $466 a month in mortgage payments. Those same raises also have to keep up with groceries, utilities and Medicare premiums.

Next come the costs people tend to forget. A home in a new subdivision can bring property taxes based on today’s price, higher insurance premiums and homeowners association fees your old house never had. Selling costs also eat into the equity you were counting on to make the smaller home affordable.

Taxes can shift too. Say you pull an extra $4,800 a year from a traditional IRA to cover the bigger payment.

That withdrawal counts as income, and the extra money can make more of your Social Security benefits taxable. A higher housing bill can also bring a higher tax bill along with it.

Three Calculations Before Putting Up the For-Sale Sign

1. Compare the full monthly cost of staying with the cost of moving by adding, for both homes, principal, interest, property taxes, insurance, association dues and expected maintenance. A newer, smaller house may save on repairs and utilities, so include those savings too.
2. Work out what you’d actually walk away with from the sale by starting with a realistic price, then subtracting agent commissions, closing costs and your mortgage balance. With home sales sluggish and buyers facing higher borrowing costs, a quick sale at full asking price is far from certain.
3. Test the alternatives to a big new loan. A larger down payment reduces the loan balance. Paying cash gets rid of it entirely. Staying put keeps your 3% rate. Be careful about draining your savings to buy outright. Clark Howard told a caller who was thinking about paying off a mortgage, “I don’t want you to end up so cash thin that you don’t have any financial cushion at all.”

Your Current Rate May Be Worth More Than the Extra Square Footage

The most affordable home in retirement may be the one with the mortgage rate you already have, so if the smaller house still comes out ahead after running those numbers, the move can make sense. If its only advantage is less square footage, the bigger house may be the better deal.

Your loan balance, local market and how much savings you want to keep can each change the answer, so do the math yourself before you list the house.

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