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Mortgage Affordability Calculator

Written by Calcida Team
Reviewed for accuracy and clarity
Last updated: April 2026

Estimate how much house you can afford based on income, debts, down payment, and interest rate.

This calculator is useful for homebuyers estimating a comfortable price range before talking to a lender You will typically enter Annual household income, Monthly debts, Down payment, Interest rate, Loan term.

The result represents an estimated maximum home price and an estimated affordable monthly payment If you are browsing similar tools, start with Mortgage Calculators or view the full calculators directory.

Also useful: Mortgage Payment Calculator with Taxes and Insurance, Down Payment Calculator.

Income & Debts

Loan Assumptions

Estimated Max Home Price

$502,990
Max Monthly Payment$2,800
Estimated Loan Amount$442,990
This estimate uses a common 28/36 guideline and does not include taxes, insurance, HOA, or PMI. Lenders may qualify borrowers differently.

What should you do next?

After calculating your mortgage, explore these related tools:

How This Calculator Works

This calculator estimates results using standard financial math based on the inputs you provide. It is designed for quick comparisons so you can understand how key variables affect the outcome.

  • Enter realistic inputs (amounts, rates, and time periods).
  • Review the computed result and any breakdown shown in the tool.
  • Adjust home price, down payment, and loan term to see how monthly payments and total interest change.

For related tools and deeper comparisons, browse Mortgage Calculators.

Formula

Max Housing Payment ≈ min(Income × 0.28 / 12, (Income × 0.36 / 12) − Monthly Debts)
Where:
  • Income = gross annual income
  • Monthly Debts = monthly debt obligations (loans, cards, etc.)
This is a common guideline (28/36). Lenders may use different thresholds.

Example Calculation

Income$120,000/year
Monthly debts$800
Down payment$60,000
Rate6.50%
Term30 years
Affordable monthly housing payment (rule-of-thumb)
≈ $2,000–$2,800

Tips for Better Estimates

  • Use the best available rate (quote, current APR, or a conservative assumption).
  • Model multiple scenarios by changing one input at a time.
  • Include fees, taxes, and deductions when they materially affect the total.
  • Compare alternatives using the calculators directory or the related calculators section.

Explore Related Tools

Continue with Mortgage Calculators to compare similar calculators and validate your assumptions across different scenarios.

Frequently Asked Questions

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