Home Affordability Calculator
Discover how much house you can comfortably afford based on your income, monthly debts, and down payment using the standard 28/36 rule.
Your Financial Picture
Include car loans, student loans, credit card minimums, etc.
Optional Monthly Costs
You Can Afford Up To
$371,836
Housing Ratio (DTI)
28.0%
Target: 28% or less
Total Debt Ratio
34.0%
Target: 36% or less
How This Is Calculated
- 28% rule: Your housing payment (PITI) should stay under 28% of your gross monthly income.
- 36% rule: Your total monthly debts (housing + all other debts) should stay under 36% of gross monthly income.
- We back-calculate the loan amount from your affordable payment, then add your down payment for the max home price.
How Much House Can You Afford?
Lenders use two key ratios to determine how much home you can afford. The front-end ratio (housing ratio) compares your monthly housing payment to your gross monthly income, and most lenders prefer it to stay at or below 28%.
The back-end ratio (total debt ratio) includes your housing payment plus all other monthly debts like car payments, student loans, and credit cards. Lenders typically want this under 36%.
This calculator gives you a starting point, but your actual affordability depends on your credit score, the loan program you choose, and assistance programs you may qualify for. Many Massachusetts programs allow higher ratios or require less down — Sofia can show you which ones fit your situation.
Want to Know What You Really Qualify For?
Get Sofia's free First-Time Homebuyer Guide and a personalized affordability analysis based on the programs you qualify for.
The Complete
Buyer's Guide
By Sofia Mortgage
