This home affordability calculator answers one of the most common early-stage questions in the home buying process: how much house can I afford? Enter your annual household income, existing monthly debt payments, and planned down payment to see what mortgage you can afford and the estimated home price range that fits your budget.
Estimated Home Price You Can Afford
--
These are estimates based on standard DTI guidelines. Actual loan amounts depend on your credit score, lender criteria, income verification, and other factors. Fundslender is a matching service, not a lender.
How much house can I afford
Affordability comes down to two metrics lenders both use at the same time. The first is the front-end ratio: your estimated mortgage payment (including taxes and insurance) should generally not exceed 28% of your gross monthly income. The second is the back-end ratio: your total monthly debt obligations, including the new mortgage payment, should stay below 36% to 43% of gross income.
This house affordability calculator with salary applies both rules and returns the more conservative result as your primary estimate. That gives you a realistic number to plan around, not an inflated ceiling.
Once you have your estimated home price, the next step is to model the full monthly payment. Use the mortgage payment calculator to add property taxes, home insurance, and PMI on top of principal and interest, so you know exactly what you will need to budget each month.
What affects how much mortgage you can afford
- Income -- The higher your household income, the more room you have for a monthly payment. Lenders use gross income (before taxes), not take-home pay. If your household has two incomes, make sure to include both.
- Existing debt -- Every dollar you already spend on car payments, student loans, or credit card minimums reduces how much mortgage you can carry. Reducing existing debt before applying directly increases your home buying power.
- Credit score -- Credit does not directly affect the DTI calculation, but it strongly affects the interest rate you receive. A lower rate means a lower monthly payment for the same loan amount, which translates to a higher home price you can afford. Use the rate checker to see how your credit tier affects estimated rate ranges.
- Down payment -- A larger down payment reduces the loan amount you need, which either lowers your monthly payment or lets you afford a higher-priced home on the same income. It also eliminates PMI once you reach 20% of the purchase price.
- Interest rate -- Even a half-point difference in your mortgage rate can shift your affordability by tens of thousands of dollars on the purchase price. Shopping rates carefully is one of the highest-leverage steps you can take.
How lenders calculate affordability
When you apply for a mortgage, lenders run two debt-to-income calculations:
- Front-end DTI (housing ratio) -- The proposed monthly mortgage payment (principal, interest, taxes, and insurance) divided by gross monthly income. Most lenders want this below 28%.
- Back-end DTI (total debt ratio) -- All monthly debt payments combined, including the proposed mortgage, divided by gross monthly income. Conventional lenders typically allow up to 36% to 43%. FHA loans can go slightly higher in some cases.
If your back-end DTI would exceed 43% with the new mortgage payment, most lenders will reduce the loan amount they are willing to offer, require a co-borrower, or decline the application. Knowing your numbers before you apply lets you address the gap rather than being surprised by it.
Not sure where you stand overall? Take the home buying readiness quiz for a broader picture of your mortgage readiness, including credit, income, savings, and employment.
How to increase your home affordability
- Pay down existing debts -- Eliminating a $400 per month car payment can add roughly $70,000 to $80,000 to your affordable home price at typical rates. Even reducing credit card minimums helps.
- Save a larger down payment -- Every additional $10,000 in down payment savings directly increases the home price you can target by the same amount, without changing your income or debt picture.
- Improve your credit score -- Moving from a fair credit score to a good one can reduce your mortgage rate by 0.5% to 1%, which meaningfully lowers your monthly payment and increases how much home you can afford on the same income.
- Add a co-borrower -- Including a partner or spouse's income in the application increases the income base used for DTI calculations. Both borrowers' debts are also included, so this works best when the co-borrower has a strong income and low existing debts.
- Choose a longer loan term -- A 30-year mortgage has a lower monthly payment than a 15-year mortgage for the same loan amount, which increases the home price you can afford on a given income. The trade-off is more total interest paid over the life of the loan. Use the refinance calculator to model the long-term cost difference.
For more background on the mortgage qualification process, visit the guides section, including articles on how much you can borrow and loan eligibility.