Home Affordability Calculator
Find out how much house you can realistically afford before you start shopping.
About the Home Affordability Calculator
This home affordability calculator helps prospective homebuyers determine how much house they can realistically afford. Enter your income, down payment, credit score range, interest rate, loan term, and monthly debts, and the spreadsheet calculates your maximum affordable home price, monthly mortgage payment, and a complete payment breakdown including principal, interest, taxes, insurance, and PMI. A pie chart visualizes the monthly payment components at a glance. Conditional formatting flags affordability warnings using standard 28% and 36% debt-to-income thresholds, while dropdown menus for credit score, loan term, and down payment source simplify data entry. Once you know your price range, use the mortgage calculator to model exact monthly payments.
Home Affordability Calculator Features
- Maximum affordable home price calculation based on income and debts
- Complete monthly payment breakdown: principal, interest, taxes, insurance, and PMI
- Pie chart visualizing monthly payment components
- Affordability warnings using 28% and 36% DTI thresholds
- Dropdown menus for credit score range, loan term, and down payment source
How to Use This Home Affordability Calculator in Excel
- 1
Enter income and debts
Input your annual income, monthly debt payments, and select your credit score range from the dropdown.
- 2
Set loan parameters
Choose your loan term, enter the interest rate, and specify your down payment amount or percentage.
- 3
Review affordability results
See your maximum home price, monthly payment, and the full breakdown of principal, interest, taxes, insurance, and PMI.
- 4
Check DTI warnings
Review conditional formatting alerts that flag when your debt-to-income ratios exceed the standard 28% and 36% thresholds.
Home Affordability Calculator FAQ
- What debt-to-income thresholds does the calculator use?
- The calculator uses the standard 28% front-end DTI (housing costs to income) and 36% back-end DTI (total debt to income) thresholds used by most lenders.
- Does it include PMI in the calculation?
- Yes, the monthly payment breakdown includes PMI (Private Mortgage Insurance), which is factored into affordability when your down payment is below 20%.
- What payment components are shown in the pie chart?
- The pie chart visualizes principal, interest, property taxes, homeowner's insurance, and PMI as portions of your total monthly payment.
