Home Affordability Calculator — How Much Can I Afford?

Home Affordability Calculator 2026 | How Much House Can I Afford? | State Loan Rates

Home Affordability Calculator

Find out how much house you can afford based on your income, debts, and down payment.

Income
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Monthly Debts
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Loan Details
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Maximum Home Price You Can Afford
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Based on 36% back-end DTI ratio
Max Loan Amount
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Price minus down payment
Max Monthly P&I
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Principal + interest
Max PITI Payment
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Including tax & insurance
Monthly Gross Income
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Combined
Your Back-End DTI Ratio (target: under 36%)

What Is the 28/36 Rule?

The 28/36 rule is the standard guideline lenders use to determine affordability. It says your monthly housing costs (principal, interest, taxes, insurance) should not exceed 28% of your gross monthly income — this is your “front-end” DTI. Your total monthly debt payments including housing should not exceed 36% of gross income — your “back-end” DTI. Many lenders will approve loans up to 43–45% back-end DTI, but staying under 36% gives you more financial cushion.

What Counts as Monthly Debt?

Lenders count all minimum monthly debt payments: car loans, student loans, credit card minimums, personal loans, alimony, child support, and any other installment payments. They do not count utilities, subscriptions, groceries, or insurance (other than the home insurance on the new property).

How Much Should I Put Down?

A 20% down payment eliminates private mortgage insurance (PMI), which can add 0.5–1.5% annually to your loan cost. However, many buyers successfully purchase with 3–10% down using FHA, conventional, or first-time buyer programs. If putting less than 20% down, factor PMI into your monthly payment estimate.

Disclaimer: This calculator provides estimates only. Actual loan qualification depends on your credit score, employment history, assets, and lender criteria. State Loan Rates is not a lender. See our Financial Disclaimer.