Finance Calculator

Home Affordability Calculator

Find out how much house you can afford based on your income, existing debts, and down payment — using the lender standard 28/36 rule.

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Your Finances
Annual Gross Income $90,000
Monthly Debt Payments $400
Down Payment $40,000
Loan Assumptions
Interest Rate 6.8%
Loan Term (years) 30 yrs
Property Tax (% / yr) 1.2%
Insurance (/ yr) $1,200
Max Home Price
Based on 28/36 rule
Conservative
Recommended
Maximum
Monthly Budget Breakdown
Max Mortgage Payment
Estimated Tax
Insurance
Existing Debts
Total DTI
Debt-to-Income Ratio
0%28% front36% back43% max
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Home Affordability FAQ
What is the 28/36 rule?

The 28/36 rule is the standard lender guideline: your mortgage payment (PITI — principal, interest, taxes, insurance) should not exceed 28% of gross monthly income, and total debt payments (mortgage + all other debt) should not exceed 36%. Going above 36% DTI makes approval harder; most lenders cap at 43% DTI.

What counts as monthly debt for DTI?

Monthly debt includes minimum credit card payments, car loans, student loans, personal loans, child support, alimony, and any other recurring debt obligations. It does not include utilities, groceries, subscriptions, or other living expenses — though those matter for your own budget planning.

How does credit score affect how much I can borrow?

Your credit score directly impacts your interest rate, which affects how much home the same payment can buy. A score of 760+ typically gets the best rates. A score below 620 may not qualify for conventional loans at all. Improving your score before buying can meaningfully increase your purchasing power.

Should I buy at my maximum affordability?

Usually not. Lender maximums are just that — maximums. Buying at the top of your budget leaves little room for emergencies, maintenance costs, or life changes. Many financial advisors recommend targeting 20–25% of gross income for housing costs rather than the full 28%.