SwiftTools

House Affordability Calculator

Find out exactly how much house you can afford. Our calculator uses real lender formulas, including the standard 28/36 rule, to estimate your maximum home buying budget.

Your Financial Profile

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Maximum Affordability

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Enter your income and debts to see your home buying budget.

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How Much House Can You Afford?

Buying a home is one of the largest financial decisions you will make. While it is tempting to borrow the absolute maximum amount a lender offers, understanding your personal budget and Debt-to-Income (DTI) ratio is critical for long-term financial health.

Understanding the 28/36 Rule

Most mortgage lenders rely on the "28/36 Rule" to determine if you qualify for a loan.

  • Front-End Ratio (28%): No more than 28% of your gross monthly income should go toward your housing expenses (PITI: Principal, Interest, Taxes, and Insurance).
  • Back-End Ratio (36%): No more than 36% of your gross monthly income should go toward all your debts combined. This includes your housing expenses plus credit card payments, student loans, car loans, etc.

What Impacts Your Affordability?

  1. Interest Rates: Even a 1% difference in mortgage rates drastically changes your monthly payment and how much house you effectively qualify for.
  2. Monthly Debts: Paying off a car loan or credit card significantly frees up your "Back-End Ratio," allowing you to borrow tens of thousands of dollars more for a home.
  3. Property Taxes & Insurance: These vary wildly depending on your country, state, and city. You can adjust these estimates in the "Advanced Options".

Frequently Asked Questions

How do I use this home affordability calculator?
Simply enter your gross annual income, total monthly debts (like car loans or credit cards), and your available down payment. The calculator uses standard lending guidelines to estimate the maximum home price and monthly mortgage payment you can afford.
What is the 28/36 rule for home buying?
The 28/36 rule is a standard guideline used by mortgage lenders to assess risk. It states that a household should spend a maximum of 28% of its gross monthly income on total housing expenses, and no more than 36% on total debt service (housing expenses plus other debts like car loans and credit cards).
What is Debt-to-Income (DTI) ratio?
Debt-to-Income (DTI) is the percentage of your gross monthly income that goes toward paying your monthly debts. Lenders use it to determine your borrowing risk. A lower DTI means you have a better balance between debt and income.
Does this calculator include property taxes and insurance?
Yes. By default, it factors in national averages for property taxes and homeowners insurance. You can expand the "Advanced Options" toggle to adjust these specific rates based on your local market.

Disclaimer: This calculator provides an estimate based on standard lending guidelines. Lending criteria vary by bank, mortgage type (e.g., FHA vs Conventional), and credit score. Always consult with a licensed loan officer for official pre-approval.

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