How to Use This Calculator
Enter the amount, rate, term, and any upfront costs that apply. The calculator turns those assumptions into payment estimates, payoff timelines, and total cost figures you can compare before making a decision.
Review the estimated result, then change one assumption at a time to see what matters most. Small changes in rates, terms, income, or contribution amounts can make a large difference over time.
Use the house affordability calculator when you need a fast planning estimate before comparing lenders, investment options, insurance needs, housing choices, or long-term financial goals. It is designed for practical scenario testing, not as a substitute for professional financial, tax, or legal advice.
About This Calculator
About the House Affordability Calculator
This calculator helps you estimate a comfortable home price based on your financial situation. It uses the widely accepted "28/36 rule" to provide a baseline for what you can afford.
How it Works: The 28/36 Rule
Lenders use two key percentages to assess affordability:
- Front-End Ratio (28%): Your total monthly housing payment—including Principal, Interest, Taxes, and Insurance (PITI)—should not exceed 28% of your gross (pre-tax) monthly income.
- Back-End Ratio (36%): Your total monthly debt payments—including your new housing payment plus all other debts like car loans, student loans, and credit card payments—should not exceed 36% of your gross monthly income.
This calculator takes the lower, more conservative estimate of these two rules to determine your maximum affordable monthly payment, and from there, calculates the corresponding home price.
Key Inputs
- Gross Annual Income: Your total income before taxes.
- Total Monthly Debts: All your recurring monthly debt payments, excluding your current rent.
- Down Payment: The amount of cash you have saved to put towards the home purchase.
The result is an estimate to guide your home search. Your actual approved loan amount may vary based on your lender, credit score, and other factors.
Frequently Asked Questions
What is the House Affordability Calculator used for?
The House Affordability Calculator helps you estimate a comfortable home purchase price based on income, debts, rates, and down payment. It is useful for comparing scenarios before you make a financial decision.
Are the House Affordability Calculator results exact?
The results are estimates based on the numbers you enter. Actual costs, rates, taxes, fees, and eligibility can vary by lender, provider, account type, location, and timing.
How should I use this house affordability calculator for planning?
Run a base case, then test optimistic and conservative assumptions. Comparing several scenarios gives you a better view of risk, affordability, and long-term impact.
Related Financial Calculators
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Estimate federal income tax liability by filing status and taxable income.