How Much House Can You Actually Afford in 2026 (Not Just What a Bank Approves)

A mortgage lender's pre-approval letter answers one question: how much can they legally lend you. It does not answer the question you actually care about — how much house you can afford without being house-poor for the next seven years. Those two numbers are usually not the same, and the gap between them is where most first-time buyers get into trouble.

Here's the three-step version, with the free tools to run your own numbers at each step.

Step 1: Start with your debt-to-income ratio, not your income

Lenders qualify you based on your debt-to-income (DTI) ratio — your total monthly debt payments (including the new mortgage) divided by your gross monthly income. Most lenders will approve up to 43-50% DTI. That's the legal ceiling, not a healthy number to actually live at.

A DTI comfortably under 36% is the number that actually leaves room for savings, emergencies, and the stuff that isn't on a mortgage statement — property tax increases, a new roof, a job gap. If your pre-approval assumes 45%, that's the bank's ceiling, not your budget.

Step 2: Run the actual monthly payment, including what the pre-approval letter leaves out

A pre-approval quote is usually principal and interest only. Property tax, homeowners insurance, and (if you're putting down less than 20%) PMI all stack on top, and together they can add hundreds of dollars a month that never showed up in the "approved amount."

Run the math at your actual expected rate, not the "as low as" rate from an ad — and run it at a couple of different home prices, not just the top of your pre-approval, so you can see how payment scales before you're negotiating on a specific house.

Step 3: Compare it to what you're paying now, honestly

If you're renting, the cleanest gut-check is comparing the new total monthly housing cost (principal, interest, tax, insurance, and any HOA) against what you'd comfortably budget as a renter — not against your current below-market rent if you've been in a place a while.

If the new total is more than about 28-30% of your gross monthly income, that's the sign to look at a lower price point, a larger down payment, or more time before buying — not a sign to find a lender with looser guidelines.

If you're ready to actually shop rates

Once you know your real number, the rate you get matters more than almost anything else in the monthly payment — a full point of interest rate on a typical loan is easily $200+/month. It's worth comparing more than one lender before you commit.

And if you'd rather have all three of these numbers, plus a room-by-room moving-in budget, in one place instead of re-running three calculators every time your target price changes:

The short version: figure out your number before you fall in love with a listing. The bank's ceiling and your actual budget are two different numbers, and only one of them has to live with the payment.