House Affordability Calculator
Estimate the home price you can afford from your income, monthly debts and down payment using standard front-end and back-end debt-to-income limits. The interest rate is your assumption — no live mortgage rate is used.
Written and reviewed by the CalcBundle editorial team. Transparent formulas · results are estimates, not advice.
Estimated home price you can afford
Enter your annual income and a loan term greater than zero.
What is a house affordability calculator?
A house affordability calculator estimates the most you can reasonably spend on a home based on what you earn, what you owe and how much you can put down. It uses the same debt-to-income guidelines lenders rely on.
How affordability is estimated
- Front-end limit = gross monthly income × front DTI
- Back-end limit = gross monthly income × back DTI − existing debts
- Housing budget = the lower of the two limits
- Loan = the mortgage that budget supports after taxes, insurance and HOA
- Home price = loan + down payment
Guidelines you can adjust
Choose a conservative (28/36), moderate (31/43) or higher (36/45) guideline, or set custom DTI limits. Because the rate is an assumption, model a few rates and down payments. When you own, project growth with the property appreciation calculator, or analyse a rental with the rental property ROI calculator.
Frequently asked questions
How much house can I afford?
It depends on your income, existing debts, down payment, interest rate and the lending guideline you use. This calculator estimates an affordable home price from front-end and back-end debt-to-income (DTI) limits.
What are front-end and back-end DTI?
Front-end DTI caps housing costs as a percentage of gross income; back-end DTI caps all debt payments, including the new mortgage. The lower of the two limits sets your housing budget. Common guidelines are 28/36, 31/43 and 36/45.
Does the calculator use a real mortgage rate?
No. The interest rate is your assumption — no live rate is fetched. Enter a rate close to current offers to make the estimate realistic, and try a range to see how sensitive affordability is to rates.
Why does my affordable price change with debts?
Existing monthly debts reduce your back-end budget, which often becomes the binding limit. Paying down debt frees up room for a larger mortgage payment and a higher affordable price.
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Disclaimer. This calculator provides estimates for informational purposes only. Results are based on the information you enter and the assumptions used by the calculator. Actual financial, tax, business valuation, lending, marketplace or investment outcomes may differ. Consider consulting a qualified professional for decisions involving significant amounts of money. Estimates only, based on debt-to-income guidelines and the rate you enter. Actual lender criteria, taxes and insurance vary. This is not a loan offer or financial advice.