House Affordability Calculator: How Much House Can I Afford?

Buying a home is one of the most significant financial decisions you will ever make. Before you start browsing listings, it is crucial to determine your "Buying Power." Our House Affordability Calculator uses industry-standard mortgage lending criteria to estimate the maximum purchase price you can realistically afford.

Understanding Mortgage Ratios (DTI)

Lenders evaluate your financial health using two primary Debt-to-Income (DTI) ratios. Knowing these helps you see your finances through a lender's eyes:

1. Front-End Ratio (Housing Ratio)

This ratio compares your total monthly housing expenses (Principal, Interest, Taxes, and Insurance—PITI) to your gross monthly income. Lenders typically prefer a front-end ratio of 28% or less.

2. Back-End Ratio (Total Debt Ratio)

The back-end ratio includes your housing costs plus all other recurring monthly debts, such as car loans, student loans, and credit card payments. A standard limit is 36%, though some loan programs (like FHA) may allow up to 43% or even higher.

Key Factors in Your Affordability

• Gross Household Income: Your total income before taxes.
• Down Payment: The cash you have available upfront. A larger down payment reduces your loan amount and monthly interest.
• Existing Debts: High monthly debt reduces the amount you can allocate to a mortgage.
• Interest Rates: Even a 1% difference in rates can change your home buying power by tens of thousands of dollars.
• Additional Costs: Don't forget Property Taxes, Homeowners Insurance, and HOA fees, which are all part of your monthly PITI.

Why Use This Tool?

• Scenario Planning: Choose between Conservative, Moderate, or Aggressive lending scenarios.
• Real-Time Breakdown: See exactly how your monthly payment is distributed between principal, interest, taxes, and insurance.
• Data-Driven Insights: Get an objective estimate of your maximum budget before talking to a bank.
• Privacy First: Our tool is 100% serverless; your financial data stays private on your own device.

Take the guesswork out of home buying. Calculate your true house affordability today.