Mortgage Affordability Calculator
Find out how much house you can afford based on your income, debts, and down payment.
Last reviewed July 1, 2026
Based on the 28/36 debt-to-income guideline. Excludes property tax and insurance, which reduce the amount you can borrow.
Before you fall in love with a house, it helps to know your ceiling. This affordability calculator estimates the maximum home price and mortgage you can comfortably carry, based on your income, existing debts, and the down payment you've saved.
It uses the debt-to-income guidelines lenders actually apply, so the number is realistic — not just what a bank might approve, but what fits sensibly alongside the rest of your budget.
The 28/36 rule lenders use
A common guideline is that your housing costs shouldn't exceed 28% of your gross monthly income (the 'front-end' ratio), and your total debt payments — housing plus car, cards and loans — shouldn't exceed 36% (the 'back-end' ratio).
This calculator takes the lower of those two limits to find a safe monthly payment, then works backwards through the loan formula to the maximum loan and home price. Paying down other debts or saving a bigger deposit both raise the number.
What it doesn't include
The estimate covers principal and interest. Property tax, home insurance, HOA fees and mortgage insurance are real monthly costs that reduce how much you can borrow, so treat the result as an upper bound and leave headroom.
Frequently asked questions
▶How much house can I afford on my salary?
It depends on your other debts, down payment and interest rate — not income alone. Enter your details above for a personalised estimate based on standard 28/36 lending ratios.
▶Should I borrow the maximum I'm approved for?
Usually not. The maximum a lender allows can leave your budget stretched. Borrowing below your ceiling gives you room for emergencies, tax, insurance and life.
Related calculators
Estimate your monthly mortgage payment, total interest, and payoff cost from the home price, deposit, rate, and term.
Open calculator →Calculate your DTI ratio — the number lenders use to decide how much you can borrow.
Open calculator →Calculate the monthly payment (EMI), total interest, and total cost of any personal or fixed-rate loan.
Open calculator →Disclaimer: Mortgage Affordability Calculator results are estimates for general information and education only, and are not financial, tax, legal or medical advice. Verify important decisions with a qualified professional.