How Much House Can You Actually Afford?

Published June 16, 2026 · CalcPenny

A lender will tell you the maximum they'll approve. That's rarely the amount you should actually spend. Here's how to find a number that leaves you comfortable, not house-poor.

Start with debt-to-income (DTI)

Lenders decide how much to lend largely on your debt-to-income ratio — the share of your gross monthly income that goes to debt payments. A common guideline is to keep all debt (housing plus car, cards, student loans) under about 36% of gross income, though some programs allow 43% or higher. The higher you push it, the less cushion you have for everything else in life.

Owning costs more than the mortgage

The mortgage payment is only part of the bill. Your true monthly housing cost — often abbreviated PITI — includes:

• Principal and Interest on the loan
• Taxes (property tax)
• Insurance (homeowners, and PMI if your down payment is small)

On top of that come maintenance, utilities and possibly HOA fees. A budget that only counts principal and interest will badly overstate what you can afford.

How the down payment changes everything

Your down payment lifts your buying power dollar-for-dollar and shrinks the loan you need. A larger down payment can also remove private mortgage insurance and earn a better rate. If you can reach 20% down, you'll usually avoid PMI entirely.

Estimate your affordable price →

Rate and term: the monthly-payment dials

A lower interest rate or a longer term reduces the monthly payment, which increases the loan you qualify for. But stretching the term means dramatically more interest over the life of the loan. Use the loan calculator to see how a 30- versus 15-year term changes both the payment and the lifetime interest.

A sensible way to decide

1. Calculate your maximum monthly housing budget at a conservative DTI (aim near 28%).
2. Subtract realistic taxes, insurance and maintenance to find what's left for principal and interest.
3. Convert that into a loan amount, add your down payment, and you have a price range.
4. Pressure-test it: would the payment still be comfortable if your income dropped or rates rose?

The goal isn't the biggest house

Borrowing to your absolute maximum leaves no room for emergencies, investing or simply enjoying life. The smartest buyers choose a payment that fits comfortably below the limit — so the home is an asset that improves their life, not a monthly stress.