House Affordability Calculator

The House Affordability Calculator estimates the maximum home price you can afford based on your income, debts, down payment, and interest rate. It uses standard lending guidelines to give you a realistic budget before you start house hunting.

How the Formula Works

Maximum mortgage = Payment you can afford × [(1+r)^n − 1] ÷ [r × (1+r)^n]. Affordable payment = Gross income × 0.28 (front-end ratio) minus property tax and insurance estimates.

How to Use This Calculator

  1. Enter your annual household income
  2. Enter your monthly debt payments
  3. Enter your available down payment
  4. Enter the expected interest rate and loan term
  5. View the maximum home price you can afford

Tips & Best Practices

  • Just because you qualify for a certain amount doesn't mean you should borrow it — leave room for other financial goals
  • The 28/36 rule is a guideline, not a mandate — factor in your personal lifestyle and expenses
  • Don't forget closing costs (2–5% of home price) and moving expenses when budgeting
  • A larger down payment means a smaller loan, lower monthly payments, and no PMI (at 20%+)

Important Limitations

  • Estimates are based on general lending guidelines — actual approval depends on credit score, employment history, and lender criteria
  • Does not account for HOA fees, maintenance costs, or utility expenses
  • Property tax and insurance rates vary significantly by location
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