How much house can you actually afford when rates are high?
The 28/36 rule still applies — but higher rates quietly shrink your budget more than people expect.
By The SmartMoney Tools Editorial TeamLast reviewed
When mortgage rates rise, the sticker price of homes is only half the story. The rate quietly resets how much house a given budget buys — and the effect is larger than most buyers expect. If you worked out your budget when rates were low, it is worth redoing the math. Here is how affordability actually shifts.
Start with the payment, not the price
The classic 28/36 rule caps your total housing payment at 28% of gross monthly income and all debt payments at 36%. Those percentages do not change with rates — but the home price that fits inside them does, dramatically, because a higher rate means more of every payment goes to interest instead of buying house.
What a $2,000 payment buys at each rate
Suppose your budget supports a $2,000/month principal-and-interest payment on a 30-year fixed loan. Here is the loan amount that payment covers at different rates:
| Rate | Loan you can afford | vs. 4% |
|---|---|---|
| 4% | ~$419,000 | — |
| 5% | ~$372,500 | −$46,500 |
| 6% | ~$333,600 | −$85,400 |
| 7% | ~$300,700 | −$118,300 |
| 8% | ~$272,600 | −$146,400 |
The same $2,000 payment that bought a $419,000 loan at 4% buys only about $300,700 at 7% — roughly 28% less house for the identical monthly cost. Nothing about your income changed; the rate did all of it.
The taxes-and-insurance squeeze
The table above is generous, because it assumes the whole payment goes to principal and interest. In reality, property taxes and homeowners insurance come out of that same 28% cap. If taxes and insurance run $500 a month, your $2,000 housing budget only leaves $1,500 for the loan itself — knocking another chunk off the price you can afford. Always budget the full "PITI" payment, not just principal and interest.
How to respond when rates are high
- Buy less house than the low-rate you. The budget that felt comfortable at 4% is a stretch at 7%. Recalculate at today's rate, not the rate you wish existed.
- A bigger down payment does double duty. It shrinks the loan directly and can help you clear the 20% threshold that removes PMI, freeing room in your payment.
- Consider the "marry the house, date the rate" logic carefully. Refinancing later is possible but never guaranteed — rates may not fall on your timeline. Only buy at a payment you can sustain at the current rate, treating any future refinance as a bonus, not a plan.
- Protect the rest of your financial life. A high-rate mortgage that leaves nothing for savings or emergencies is a risk, not a purchase. See our emergency fund guide.
The bottom line
Higher rates do not just raise payments — they shrink the price tag your budget can reach, often by a quarter or more for the same monthly cost. The 28/36 rule is still your guardrail; just run it against the rate you will actually pay, budget the full PITI payment, and let the current number set your ceiling. The house that fits your life is the one whose payment you can carry without a refinance you cannot count on.
Educational information only, not financial or lending advice. Figures are illustrative and exclude taxes, insurance, and fees. Actual affordability depends on your full financial picture and lender criteria.
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