House Affordability Calculator
Find out how much house you can afford based on income, debts, down payment and a lender-friendly debt-to-income ratio.
Car loans, credit cards, student loans and other recurring payments.
Lenders typically cap the back-end ratio at 36–43%.
Affordable home price
$494,409
With 20% down
Max monthly payment
$2,500
After your other debts
Total interest
$504,473
Total payment
$900,000
Uses the back-end debt-to-income rule: monthly housing payment plus other debts ≤ income × ratio. This is a planning estimate, not a lender pre-approval.
How it works
Max housing payment = income × 28% (front-end) and ≤ income × 36% − other debts (back-end). Price solved by reversing the amortising formula.
Example: $100k income, no debts → up to $2,333/month housing → ~$325,000 at 6.5% with 20% down.
House Affordability Calculator on True Calculator gives you an instant, accurate answer with no sign-up and no app install. Find out how much house you can afford based on income, debts, down payment and a lender-friendly debt-to-income ratio. Every result shows the formula and a worked example so you can verify the calculation yourself, and all values are computed in your own browser — your numbers never leave your device.
Popular uses: house affordability calculator · how much house can i afford · home affordability calculator
Last updated: August 2026
How We Calculate
This calculator uses standard mathematical formulas verified by our team. All calculations are performed instantly in your browser using JavaScript — no data is sent to any server. The formulas used are industry-standard and match those used by banks, financial institutions and health organizations.
For financial calculators, we use RBI-approved formulas and regularly updated bank rates. For health calculators, we use WHO-recommended formulas and medical standards. All rates and standards are sourced from official government and regulatory websites.
Frequently Asked Questions
How much house can I afford?
Most lenders want your total monthly housing costs (principal, interest, taxes, insurance and HOA fees) to stay at or below 28% of your gross monthly income, and total debts below 36%.
What is the 28/36 rule?
It is a budgeting guideline: no more than 28% of gross income on housing and no more than 36% on all debts combined. This calculator applies those limits to estimate your price range.
Why does my down payment change what I can afford?
A larger down payment reduces your loan amount and may remove PMI, so the same income can support a more expensive home without breaking the monthly budget.
Is this house affordability calculator free to use?
Yes, True Calculator's house affordability calculator is completely free with no sign-up, no app install and no usage limits.
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