Home Affordability Calculator
Estimate how much house you can afford based on your household income, monthly debt obligations, down payment cash, and target debt-to-income (DTI) ratio.
100% Free to Use — US Lending Standards
Financial Profile
Income & Debt
Estimated Affordable Home Price
$435,000
Based on Selected Debt-to-Income Lending Limit
Max Housing Payment
$2,900.00
P&I, taxes, insurance & HOA
Estimated Loan Amount
$375,000
Home price − down payment
Down Payment Applied
$60,000
Cash equity
Monthly Principal & Int.
$2,370.26
Base debt service
Monthly Property Taxes
$435.00
Estimated municipal tax
Monthly Insurance & PMI
$108.33
Escrow obligations
Front-End DTI
30.3%
Housing / Gross Income
Back-End DTI
36.0%
All Debt / Gross Income
Housing Payment Distribution
Monthly Breakdown
Principal & Interest
Property Tax
Insurance
HOA & PMI
Ad Placement — Mid Page
How Mortgage Lenders Determine Home Affordability
When applying for a residential mortgage in the United States, lending institutions evaluate your borrowing capacity using two primary debt-to-income (DTI) metrics:
- Front-End DTI (Housing Ratio): The percentage of your gross monthly income dedicated solely to housing costs (Principal, Interest, Taxes, Insurance, and HOA fees). Conventional guidelines target 28% or less.
- Back-End DTI (Total Debt Ratio): The percentage of your gross monthly income required to pay all recurring debts combined, including your mortgage, auto loans, student loans, and credit card minimums. Conventional guidelines target 36%, while the CFPB Qualified Mortgage cap extends to 43%.
Important Notice Regarding Loan Pre-Approval
Please note that affordability calculations provide an informative guideline based upon theoretical underwriting models. An affordability estimate is not a loan pre-approval or a commitment to lend. Mortgage approval also depends on credit history, employment tenure, cash reserves, and property appraisal results.
Frequently Asked Questions About Home Affordability
How can I increase the home price I can afford?
The most effective ways to boost your purchasing power are: paying down recurring non-housing debts (lowering your back-end DTI), saving a larger down payment, improving your credit score to secure a lower interest rate, or shopping in municipalities with lower property tax rates.
Do student loans impact how much house I can buy?
Yes. Monthly student loan payments are included directly in your back-end debt calculation. Under Fannie Mae rules, income-driven repayment (IDR) amounts can often be used, or 0.5% to 1% of the loan balance if deferred.