Mortgage Affordability Calculator Zillow

Mortgage Affordability Calculator Zillow






Mortgage affordability calculators, like Zillow’s, are essential tools for homebuyers to understand their financial capabilities. They help determine the maximum mortgage amount you can afford based on your income, debts, and other financial obligations.

How to Use This Calculator

  1. Enter your monthly income.
  2. Enter your monthly debt obligations (credit cards, car loans, etc.).
  3. Enter the percentage of the home’s price you plan to use as a down payment.
  4. Select your preferred loan term (30 or 15 years).
  5. Enter the current interest rate for mortgages.
  6. Click ‘Calculate’ to see your results.

Formula & Methodology

The calculator uses the following formula to determine your maximum affordable mortgage:

Maximum Affordable Mortgage = (Monthly Income * (1 - Monthly Debt Ratio)) - (Down Payment * Home Price)

Where Monthly Debt Ratio is calculated as:

Monthly Debt Ratio = (Monthly Debt / Monthly Income)

Real-World Examples

Data & Statistics

Average Mortgage Rates by Loan Term (2020-2021)
Loan Term Average Rate (%)
30 Years 3.10
15 Years 2.41

Expert Tips

  • Consider using a mortgage calculator with different scenarios to see how changes in interest rates, down payment, and loan term affect your affordability.
  • Remember, affordability isn’t just about the mortgage. Consider other costs like property taxes, homeowners insurance, and maintenance.

Interactive FAQ

What is the 28/36 rule?

The 28/36 rule is a guideline used by lenders to determine how much a borrower can afford to pay for housing. It suggests that your monthly housing costs (mortgage, property taxes, and insurance) should not exceed 28% of your gross monthly income, and your total debt (including housing costs) should not exceed 36%.

A couple discussing their mortgage affordability A family moving into their new home

For more information, see the Consumer Financial Protection Bureau and the U.S. Department of Housing and Urban Development.

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