Determine how much house you can afford based on income, debts, down payment, interest rate, and DTI ratio limits.
Home Affordability Calculator works backward from household cash flow to an estimated purchase-price ceiling. Enter gross income, recurring monthly debt, available down payment, the mortgage interest rate, and the displayed debt-to-income limits. It determines how much monthly housing cost fits those limits, then relates that payment capacity and down payment to a home price. The common surprise is that a larger down payment does not create more monthly income: debt-to-income can remain the binding constraint even when the requested loan becomes smaller.
Convert income to the same monthly basis used by the debt entries. The entered debt-to-income limits cap the share of gross monthly income available for housing and combined obligations. Existing recurring debt consumes part of the combined allowance. The lower applicable ceiling determines the housing-payment budget, so adding a car payment or student-loan payment can reduce the estimated affordable price.
After finding the housing-payment ceiling, the calculator relates that ceiling to a mortgage balance under its interest-rate and repayment assumptions. The down payment bridges the supported loan amount and the estimated purchase price. Charges included as housing costs consume part of the monthly allowance, so dollars assigned to taxes, insurance, or similar costs cannot also support mortgage principal and interest.
Use gross income when the field is defined around DTI, because DTI compares monthly debt obligations with gross monthly income. Do not substitute take-home pay unless the form explicitly requests net income. Even when gross income is correct for the calculation, compare the resulting payment with your after-tax household budget before treating the estimated price as comfortable.
The calculator tests monthly payment capacity as well as cash available at purchase. A large down payment reduces the mortgage required, but recurring debt still occupies part of the total monthly debt allowance. If that allowance is the tighter constraint, eliminating an obligation that removes a monthly payment can affect the estimate differently from adding the same cash to the down payment.
The behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
Calculate gross, operating, and net profit margins from cost and revenue with breakeven analysis.
Convert between annual salary and hourly rate with adjustments for work hours, overtime, and benefits.
Calculate sales tax amounts, tax-inclusive and tax-exclusive prices for any tax rate or jurisdiction.
Calculate return on investment from initial cost and final value with annualized ROI and comparison tables.
Convert between markup and margin percentages, calculate selling price, and compare pricing strategies.
Convert numeric amounts to written words for invoices, checks, and legal documents in multiple currencies.