House Affordability Calculator

Uses typical housing-debt ratios with estimated property tax and insurance as a percent of home value.

Your finances

Gross annual income

Monthly non-housing debt payments

Down payment (% of price)

Mortgage APR (%)

Loan term (years)

Property tax (% of value / year)

Home insurance (% of value / year)

Max housing / income — “front end” (%)

Max total debt / income — “back end” (%)

How the maximum price is estimated

The calculator applies the classic "28/36" affordability rule: your housing payment (principal, interest, taxes, and insurance — "PITI") shouldn't exceed a front-end percentage of gross monthly income, and your total debts including housing shouldn't exceed a back-end percentage. It takes the more restrictive of the two limits, then works backward — testing candidate home prices until it finds the largest one whose estimated PITI fits within that budget.

Frequently asked questions

Why 28% and 36%? These are long-standing conventional mortgage guidelines, though actual limits vary by lender and loan program — some allow higher back-end ratios for borrowers with strong credit or large down payments.

Does this include HOA fees or PMI? No — property tax and insurance are estimated as a percentage of home value, but HOA dues and private mortgage insurance (common with less than 20% down) aren't included, so your real affordable price may be somewhat lower if those apply.

Why does a bigger down payment increase affordability? A larger down payment reduces the loan amount (and therefore the monthly principal and interest), leaving more of your housing budget available to support a higher purchase price.