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An affordability calculator flips the usual mortgage calculator around: instead of starting with a home price and calculating the payment, it starts with your income and existing debts, and works backward to a realistic price range you can actually target. The inputs that drive an affordability estimate A proper affordability calculation needs: Gross monthly income — before taxes, since that's the basis lenders use Existing monthly debt payments — car loans, credit cards (minimum payments), student loans, and any other recurring debt Estimated down payment — how much cash is available for the down payment and, separately, closing costs Target interest rate and loan term Estimated property taxes, insurance, and, if applicable, HOA dues for the area you're considering How the calculation actually works The calculator applies debt-to-income guidelines — commonly using a target back-end ratio around 36% (or a different figure you specify) — to figure out the max...

"How much house can I afford" has two different answers: the amount a lender is willing to approve, and the amount that fits comfortably into a household's actual budget and goals. These aren't always the same number, and treating the lender's maximum as a target rather than a ceiling is a common source of post-purchase financial stress. Why the lender's number isn't the whole answer Lenders approve based on debt-to-income ratio, credit, and documented income — a formula that doesn't account for other financial goals like retirement savings, childcare costs, irregular expenses, or simply how much cash flow flexibility a household wants to maintain. Two buyers with identical approved amounts can have very different real capacity depending on their other priorities. Starting with a percentage-of-income guideline A commonly referenced starting point is keeping total housing costs (principal, interest, taxes, insurance, and HOA dues if applicable) ...