Money & Finance

Home Affordability Calculator

Estimate a home price range from income, monthly debts, down payment, mortgage rate and a target debt-to-income ratio.

Free online toolWorks in your browserNo sign-up required

Home Affordability Calculator

Enable JavaScript to use the interactive calculator; the example and formula are described below.

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Home Affordability, Refinance & Rent vs. Buy

Compare how income, debt, rates, refinancing costs and ownership assumptions affect housing decisions.

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How to use this home affordability calculator

Enter the values requested above and select Calculate. Change any input to compare another scenario. The calculation runs locally in your browser and does not require an account.

Formula and method

Maximum housing payment ≈ gross monthly income × target housing ratio − other monthly debt. That payment is then converted to an estimated loan amount.

Example

With $8,000 in gross monthly income, $700 of other debt and a 36% target ratio, the calculator estimates a maximum housing payment before taxes and insurance.

What this calculator is useful for

Estimate a home price range from income, monthly debts, down payment, mortgage rate and a target debt-to-income ratio. The result is intended for quick estimates, checking arithmetic and comparing scenarios. When a result affects a contract, tax filing, medical decision, building-code requirement or other high-stakes situation, verify the result with the appropriate professional or authoritative source.

Home Affordability Calculator: a practical example

With $8,000 monthly income, $700 monthly debt and a 36% target DTI, the budget for total monthly debt is $2,880 before subtracting existing debt.

What the result means

A DTI target is a planning constraint, not a loan approval.

Limits to consider

Taxes, insurance, association fees, credit score, reserves and lender-specific underwriting can change affordable price.

Related tools: Future Value Calculator · Investment Return Calculator

From affordability to monthly payment

After estimating a home-price range, use the Mortgage Calculator to test a specific loan amount and rate. If you want to compare paying the loan down faster, use the Mortgage Payoff Calculator.

Frequently asked questions

What does the Home Affordability Calculator calculate?

Estimate a home price range from income, monthly debts, down payment, mortgage rate and a target debt-to-income ratio.

How does the Home Affordability Calculator work?

Maximum housing payment ≈ gross monthly income × target housing ratio − other monthly debt. That payment is then converted to an estimated loan amount.

Is the Home Affordability Calculator free to use?

Yes. ERICH Calculators is free to use and does not require an account.

Source & assumptions

Important assumption

This is an affordability estimate, not a lending decision. Debt-to-income definitions and acceptable thresholds vary by lender and loan product.

Transparency

Method, assumptions & corrections

See how formulas, sources and limitations are handled across ERICH Calculators.