Home Affordability Calculator

Find out how much house you can actually afford based on your income, debts, and savings — using the same DTI ratios lenders use.

This calculator provides estimates for educational purposes only. Actual costs vary by location, lender, and market conditions. Consult a licensed professional for advice specific to your situation.

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How the Home Affordability Calculator Works

Lenders use two numbers to decide how much you can borrow: your front-end DTI (debt-to-income ratio) and your back-end DTI. The front-end ratio measures just your housing costs against your income. The back-end ratio adds all your other monthly debts. Most conventional lenders want the front-end under 28% and the back-end under 36%.

This calculator uses the 28% front-end rule to find your maximum home price, then shows you the full monthly PITI breakdown: principal and interest, property tax, homeowner's insurance, and PMI if your down payment is below 20%.

What the Calculator Shows You

  • Maximum home price — the highest purchase price where your monthly housing payment stays within the 28% front-end DTI guideline
  • Monthly PITI breakdown — principal and interest, property tax, insurance, and PMI if applicable
  • DTI ratios — front-end and back-end, with warnings if you're above lender comfort zones
  • Down payment analysis — whether your savings cover 20% (avoiding PMI) or what percentage you can put down
  • Savings gap warning — if your current savings don't cover the down payment needed for your maximum affordable price

Why DTI Ratios Matter More Than Home Price

Online calculators that ask "what price range are you looking at?" have it backwards. The price range isn't your input — it's your output. Your income, debts, and savings determine what you can afford. This calculator starts from your financial reality and works forward to a price you can actually get approved for.