How Much House Can You Actually Afford? A Realistic Framework

Getting pre-approved answers one question: what a lender will let you borrow. It doesn’t answer the more important one — what you can comfortably afford once property taxes, insurance, maintenance, and everyday life are factored in. The gap between those two numbers is where a lot of new homeowners get squeezed.

A more realistic framework starts with your full monthly picture, not just principal and interest:

• Total housing cost, including principal, interest, taxes, insurance, and any HOA dues — not just the loan payment
• A cushion for maintenance, typically budgeted at 1% to 2% of the home’s value per year
• Other debt obligations that count toward your debt-to-income ratio, even if a lender approves you with room to spare
• Life beyond the mortgage — retirement savings, childcare, travel, and the goals a maxed-out payment would crowd out

A commonly used guideline is the 28/36 rule: housing costs at or below 28% of gross monthly income, and total debt payments at or below 36%. Lenders will often approve borrowers well above these thresholds, especially with strong credit — but approval and comfort are two different tests.

Before shopping, run your own numbers with a mortgage calculator using the full PITI payment, not just the headline number a listing suggests. Compare that figure against your actual monthly budget, not your gross income. The house you can afford and the house you’re approved for aren’t always the same number — and knowing the difference before you shop is what keeps a purchase from becoming a financial strain.