The Mortgage Affordability Calculator is a free, accurate online tool designed to help you plan smarter financial decisions in seconds. Just enter gross monthly income, total monthly debt payments (excluding rent), available down payment, annual interest rate, loan term, annual property tax rate, annual homeowner's insurance, monthly hoa dues (if any), maximum housing debt-to-income ratio (front-end), maximum total debt-to-income ratio (back-end) and instantly see max loan based on housing dti, max loan based on total dti, maximum mortgage loan you can afford, maximum affordable purchase price, estimated monthly payment (principal & interest), total estimated monthly housing payment (piti + hoa). Financial planning is one of the most important skills you can build, and small math mistakes can cost you thousands over time. This calculator removes the guesswork by applying the exact same formulas banks, advisors, and analysts use, so you always get a number you can trust. Under the hood, the tool applies the standard formula: Maximum Mortgage = (P - DTI_debt) / (MortgagePaymentFactor). You can see exactly how the result is derived, which is especially useful for students, professionals, and anyone who wants to learn rather than just get an answer. CalcPlanet builds every calculator to be fast, mobile-friendly, and free, with no signup required. We test results against worked examples and reference implementations so you can rely on what you see. Enter your values above to get an instant, accurate mortgage affordability calculator result, then explore the FAQs and examples below for deeper context.
The Mortgage Affordability Calculator is a free, accurate online tool designed to help you plan smarter financial decisions in seconds. Just enter gross monthly income, total monthly debt payments (excluding rent), available down payment, annual interest rate, loan term, annual property tax rate, annual homeowner's insurance, monthly hoa dues (if any), maximum housing debt-to-income ratio (front-end), maximum total debt-to-income ratio (back-end) and instantly see max loan based on housing dti, max loan based on total dti, maximum mortgage loan you can afford, maximum affordable purchase price, estimated monthly payment (principal & interest), total estimated monthly housing payment (piti + hoa). Financial planning is one of the most important skills you can build, and small math mistakes can cost you thousands over time. This calculator removes the guesswork by applying the exact same formulas banks, advisors, and analysts use, so you always get a number you can trust. Under the hood, the tool applies the standard formula: Maximum Mortgage = (P - DTI_debt) / (MortgagePaymentFactor). You can see exactly how the result is derived, which is especially useful for students, professionals, and anyone who wants to learn rather than just get an answer. CalcPlanet builds every calculator to be fast, mobile-friendly, and free, with no signup required. We test results against worked examples and reference implementations so you can rely on what you see. Enter your values above to get an instant, accurate mortgage affordability calculator result, then explore the FAQs and examples below for deeper context.
The How Much Mortgage Can I Afford? on CalcPlanet is engineered for accuracy, speed and zero friction. Enter your numbers, see results instantly, and explore the full formula and worked example below — no signup, no paywall, no tracking of your inputs.
Maximum Mortgage = (P - DTI_debt) / (MortgagePaymentFactor)
(gross_monthly_income * (front_end_ratio / 100) - (homeowner_insurance_annual / 12) - hoa_dues_monthly) / ((annual_interest_rate / 100 / 12) / (1 - Math.pow(1 + (annual_interest_rate / 100 / 12), -loan_term_years * 12)) + (property_tax_rate / 100 / 12))
This calculator estimates the maximum mortgage amount based on your income, monthly debts, down payment, interest rate, and loan term. It helps you understand your borrowing capacity.
Yes. Every calculator on CalcPlanet is 100% free, requires no signup, and runs entirely in your browser. There are no usage limits and no paywall.
The calculator applies the standard formula (Maximum Mortgage = (P - DTI_debt) / (MortgagePaymentFactor)) and is tested against worked examples. Results are accurate to the precision of the inputs you provide.
Yes. CalcPlanet is fully mobile-optimized. The interface, inputs, and results all adapt to phones and tablets, and you can save the page as a home-screen shortcut for one-tap access.
No. All calculations run locally in your browser. Your inputs never leave your device unless you explicitly choose to share or save a result.
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