House affordability calculator using income, debt and housing costs
Enter household income, existing debts, down payment, mortgage terms, taxes, insurance and ratio limits. HitEquals solves a home price whose full monthly housing cost fits both limits.
Inputs used by this calculator
House Affordability Calculator uses the fields below. The starting values reproduce the page example; replace them with values from the same units and time period before using the result.
| Input | Starting example | Accepted value | How it is used |
|---|---|---|---|
| Gross annual household income (USD) | 100,000 | 1 to 1000000000000 | Supplies the gross annual household income (usd) quantity used by the published equation or result breakdown. |
| Other monthly debt payments (USD) | 500 | 0 to 1000000000 | Supplies the other monthly debt payments (usd) quantity used by the published equation or result breakdown. |
| Available down payment (USD) | 50,000 | 0 to 1000000000000 | Supplies the available down payment (usd) quantity used by the published equation or result breakdown. |
| Mortgage interest rate (%) | 6.5 | 0 to 100 | Supplies the mortgage interest rate (%) quantity used by the published equation or result breakdown. |
| Loan term (years) | 30 | 1 to 50 | Supplies the loan term (years) quantity used by the published equation or result breakdown. |
| Annual property tax (%) | 1.2 | 0 to 20 | Supplies the annual property tax (%) quantity used by the published equation or result breakdown. |
| Monthly homeowners insurance (USD) | 150 | 0 to 1000000 | Supplies the monthly homeowners insurance (usd) quantity used by the published equation or result breakdown. |
| Monthly HOA (USD) | 0 | 0 to 1000000 | Supplies the monthly hoa (usd) quantity used by the published equation or result breakdown. |
| Monthly mortgage insurance (USD) | 0 | 0 to 1000000 | Supplies the monthly mortgage insurance (usd) quantity used by the published equation or result breakdown. |
| Housing-to-income limit (%) | 28 | 1 to 100 | Selects the unit or conversion path used by House Affordability Calculator. |
| Total debt-to-income limit (%) | 36 | 1 to 100 | Selects the unit or conversion path used by House Affordability Calculator. |
Affordability versus qualification
CFPB explains that the amount a lender may approve can differ from the payment that fits your priorities. Treat the result as a scenario ceiling, then compare it with your actual budget.
Front-end and back-end ratios
The housing ratio compares housing cost with gross income. The total DTI adds other monthly debt.
housing ratio=housing payment/gross monthly incomeDTI=(housing payment+other debt)/gross monthly incomeComplete housing payment
The solved payment includes mortgage principal and interest, property tax, homeowners insurance, HOA and entered mortgage insurance. Utilities and maintenance remain outside it.
How price is solved
The engine finds the price whose loan payment plus price-based tax and fixed costs fit the smaller monthly ratio budget. The loan amount is price minus down payment.
Stress-test the result
Try a higher interest rate, realistic repairs and a lower ratio. Keep cash for closing and emergencies instead of assuming the entire available balance becomes down payment.
What the House Affordability Calculator answers
Estimate an affordable home price from income, debt, down payment and complete monthly housing costs.
Use House Affordability Calculator when you know Gross annual household income (USD), Other monthly debt payments (USD), Available down payment (USD), Mortgage interest rate (%), Loan term (years), Annual property tax (%), Monthly homeowners insurance (USD), Monthly HOA (USD), Monthly mortgage insurance (USD), Housing-to-income limit (%) and Total debt-to-income limit (%) and need the relationship expressed by the published equation.
Monthly housing components
| Included | Outside model |
|---|---|
| Principal and interest | Utilities |
| Property tax | Maintenance |
| Insurance and PMI | Closing cash |
| HOA | Personal savings goals |
Frequently asked questions
What is DTI?
Monthly debt payments divided by gross monthly income.
Are 28% and 36% universal rules?
No. They are editable planning assumptions; lenders and products differ.
Does the result include property tax?
Yes, using the annual percentage you enter.
Are utilities and repairs included?
No. Reserve for them separately.
Does this guarantee loan approval?
No. Credit, assets, documentation, loan rules and lender underwriting also matter.
What question does this House Affordability Calculator answer?
Estimate an affordable home price from income, debt, down payment and complete monthly housing costs.
What to keep in mind
A lender's qualification is not a personal budget. Utilities, maintenance, closing cash, rate changes and underwriting rules are not fully modeled.
Results are rounded for display in US format, with money in dollars and cents; CSV exports keep full calculation precision. This is a calculation summary, not an official certificate.