Mortgage calculator

Home affordability calculator

Start from your income and debts, the way a lender does, and see the price range they point to.

Your numbers

Monthly income before taxes. Enter the interest rate you were quoted. Nothing you type leaves this page.

Rates filled in from Freddie Mac’s Primary Mortgage Market Survey® 30-year average of 7.40% for the week of October 8, 2026: national averages, not a quote. Enter the rate you were quoted. This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.

Loan term
Where is the home? (optional)
Choose a county to fill in its typical property tax and the state’s average insurance rate, as percentages you can still change.
State averages run from about 0.3% to 1.9% of value a year: about 0.5% in Arizona, 0.8% in Florida and 1.4% in Ohio. Buying can reset the tax higher; in California it starts at about 1% of the price plus local charges.
Average premiums run about 0.2% to 0.75% of a home’s value a year: about 0.2% in California, 0.3% in Arizona, 0.5% in Ohio and 0.75% in Florida. They have risen since these 2022 figures and run higher with wildfire, wind or flood risk, so use a quote.
–Enter your income and interest rate to see a price range.

An estimate only, not a loan offer. Your Loan Estimate from the lender is the figure to rely on.

How it works

Most housing payment = income × debt-to-income limit − other debts

From that payment, taxes, insurance and HOA dues come off first; what is left supports principal and interest. The calculator converts that into a loan amount at your rate and term, then adds your down payment to reach a price. The table repeats the sum at 36%, 43% and 50% of income, so you can see a comfortable figure next to the most a lender might allow.

Keep in mind

  • The limits shown are common guideline figures: about 45% for conventional, 43% for FHA, 41% for VA (which also checks residual income) and 41% for USDA (which also caps the housing payment at 29%). Automated underwriting can approve higher ratios with strong credit, savings or other compensating factors.
  • Mortgage insurance is not included here; on a low down payment it reduces the price a little.

Questions

What income do I need for a $400,000 mortgage?

Add the full housing payment (principal, interest, taxes, insurance and dues) to your other monthly debts, then divide by the lender’s debt-to-income limit, such as 45% for many conventional loans. The result is the gross monthly income needed. Enter your rate above and leave income blank: the table shows the income needed for every loan amount from $200,000 to $1,000,000.

How much house can I afford on $100,000 a year?

That is about $8,333 a month before taxes. At a 45% debt-to-income limit, up to 45% of that can go to the new housing payment and other debts combined, taxes and insurance included. Enter your own rate, debts and costs above for a real figure.

Do lenders use gross or take-home pay?

Gross pay, before taxes and deductions. For self-employed borrowers it is qualifying income after business expenses, which can be quite different from deposits.

Other calculators

All calculators and tools

Get started

Want a real number?

This home affordability calculator gives you a good estimate. Jack can run your actual scenario against current lender guidelines and show you the options, free.

Jack Gladden
Jack GladdenSenior Loan Officer · NMLS #1470164
CallFree consultation