Mortgage affordability calculator
Mortgage Affordability Calculator
Estimate how much house you may be able to afford based on household income, monthly debts, down payment, interest rate, property taxes, insurance, PMI, HOA fees and a maintenance buffer. The calculator shows conservative, balanced and stretch scenarios so you can compare affordability ranges.
Mortgage affordability estimate
These ranges are based on how much of your gross monthly income goes toward housing. A lower percentage may leave more room for savings, emergencies, retirement contributions and normal living expenses.
| Scenario | Estimated home price | Loan amount | Monthly housing cost | Total DTI |
|---|---|---|---|---|
| Conservative About 25% of gross income | $270,022 | $210,022 | $1,875.00 | 31.7% |
| Balanced About 30% of gross income | $321,837 | $261,837 | $2,250.00 | 36.7% |
| Stretch About 35% of gross income | $373,651 | $313,651 | $2,625.00 | 41.7% |
Monthly cost breakdown
Mortgage affordability is not only the principal and interest payment. Taxes, insurance, PMI, HOA fees and maintenance can change the real monthly cost of owning a home.
| Monthly gross income | $7,500.00 |
|---|---|
| Existing monthly debt payments | $500.00 |
| Principal and interest | $1,654.99 |
| Estimated property tax | $295.02 |
| Homeowners insurance | $100.00 |
| PMI, HOA and maintenance | $200.00 |
| Balanced monthly housing cost | $2,250.00 |
How this mortgage affordability calculator works
The calculator starts with gross monthly income and tests three housing payment targets: 25%, 30% and 35% of gross income. It then estimates how much mortgage principal and interest can fit after property tax, insurance, PMI, HOA and maintenance assumptions are included.
What is debt-to-income ratio?
Debt-to-income ratio compares monthly debt payments with monthly gross income. The front-end ratio looks at housing costs only. The back-end ratio includes housing plus other debts such as car loans, student loans, personal loans and credit card payments.
Why the monthly payment matters more than the home price
Two homes with the same purchase price can have different monthly costs if taxes, insurance, HOA fees or required repairs are different. A home that is approved by a lender can still feel expensive if it leaves too little room for savings and daily expenses.
Example
If a household earns $90,000 per year, has $500 in monthly debt payments, uses a $60,000 down payment and estimates a 6.5% mortgage rate, the balanced scenario targets about 30% of gross monthly income for housing before checking the total DTI ratio. Changing the rate, down payment, insurance or monthly debts can move the affordable home price significantly.
Comfortable vs stretch affordability
A conservative scenario may be easier to handle during slower months or after unexpected expenses. A stretch scenario may help estimate the upper edge of affordability, but it can reduce flexibility and increase the risk of becoming house poor.
Limitations
This calculator provides simplified educational estimates only. It does not determine mortgage approval, final loan eligibility or the exact amount a lender may offer. Actual affordability depends on credit profile, lender rules, rate lock, taxes, insurance, cash reserves, employment history, property type, location and your personal budget.
Mortgage affordability FAQ
How much house can I afford?
A practical estimate starts with income, debts, down payment and the monthly housing payment you can comfortably handle. The calculator shows conservative, balanced and stretch ranges, but your real budget should decide the final limit.
What is a good debt-to-income ratio?
Lower debt-to-income ratios usually provide more budget flexibility. Many buyers compare scenarios around the low-to-mid 30% range for total debt, while higher ratios may feel tighter and may depend more heavily on lender rules.
Does the down payment change affordability?
Yes. A larger down payment can reduce the loan amount, monthly principal and interest, and possibly PMI. However, keeping emergency savings after buying a home is also important.
Why include maintenance?
Homeownership includes repairs and ongoing upkeep. A maintenance buffer helps keep the estimate closer to real monthly ownership costs instead of focusing only on the mortgage payment.