Home Affordability Calculator - How Much House Can I Afford by Income & DTI?
A home affordability calculator estimates your maximum purchase price from gross income, monthly debts, down payment, interest rate, property taxes, and insurance using the 28/36 debt-to-income (DTI) guidelines. With $80,000 annual income ($6,667/month gross), $500 in monthly debts, and $20,000 down at 6.5%, many buyers can afford roughly $280,000-$320,000 depending on local tax and insurance costs. This is a planning estimate, not lender pre-approval.
Your Financial Details
Based on the 28/36 qualifying rule.
Car loans, student loans, credit cards, etc.
Annual rate as % of home value (US avg ~1.1%)
Affordability Summary
Based on the 28/36 debt-to-income rule.
Max Home Price (28% rule)
$325,291
Loan: $265,291 + $60,000 down
Conservative Price (36% rule)
$352,925
Accounts for your $400/mo in existing debts
Monthly Payment Breakdown
Affordability Ratio
28.0% of gross monthly income
Lenders typically require this to be below 28%. Your front-end limit is $2,100.00/mo.
Methodology and limitations
Last reviewed:
Methodology
Combines income, debt, down payment, rate, term, property tax, insurance, and housing-budget assumptions to estimate an affordable home-price range.
Limitations
Planning estimate only. It is not a pre-approval and does not replace lender underwriting, credit review, or official Loan Estimates.
Official sources
How to Use the Home Affordability Calculator - How Much House Can I Afford by Income & DTI?
A home affordability calculator estimates your maximum purchase price from gross income, monthly debts, down payment, interest rate, property taxes, and insurance using the 28/36 debt-to-income (DTI) guidelines. With $80,000 annual income ($6,667/month gross), $500 in monthly debts, and $20,000 down at 6.5%, many buyers can afford roughly $280,000-$320,000 depending on local tax and insurance costs. This is a planning estimate, not lender pre-approval.
Method used
This calculator estimates a practical home price range from income, debts, down payment, rate, term, property tax, insurance, and housing budget assumptions.
Practical example
Example: adjust monthly income and existing debt to see how the affordable home price changes before comparing mortgage payment scenarios.
What this includes
- Includes income, debt, down payment, mortgage rate, tax, and insurance assumptions.
- Useful before a lender pre-approval or home search.
What this excludes
- Does not guarantee approval or replace lender underwriting.
Frequently Asked Questions
How much house can I afford?
Home affordability depends on your gross income, existing monthly debts, down payment, interest rate, loan term, property taxes, and home insurance. Most lenders cap housing costs around 28% of gross income and total debts around 36% to 43% of gross income, though programs vary. This calculator estimates a practical price range based on those inputs - it is a planning tool, not a loan approval. Always leave room for maintenance, utilities, and emergency savings beyond the mortgage payment.
What debt-to-income ratio should I use?
Debt-to-income (DTI) ratio compares your total monthly debt payments to gross monthly income. Lenders typically review front-end DTI (housing costs only) and back-end DTI (all debts including the new mortgage). A back-end DTI of 36% or lower is conservative; many programs allow up to 43% or higher with strong credit. A lower DTI gives more breathing room for mortgage payments, property tax increases, and unexpected expenses without stretching your budget.
Does this include taxes and insurance?
Yes. Enter estimated annual property tax and home insurance to model a more realistic monthly housing payment instead of principal and interest alone. Taxes and insurance are often collected through an escrow account and can add hundreds of dollars to your monthly cost. If you live in a high-tax area or a region with elevated insurance premiums, including these figures prevents underestimating what you can truly afford.
Is this the same as pre-approval?
No. A lender pre-approval verifies your credit score, income documentation, employment history, assets, and specific loan program rules to determine how much they will lend you. This calculator uses general affordability guidelines and your self-reported numbers to estimate a budget range before you shop. Use it to set a realistic price ceiling, then get pre-approved to confirm your buying power and strengthen offers with sellers.
How much down payment do I need to afford a house?
A 20% down payment avoids private mortgage insurance (PMI) on conventional loans, but many buyers qualify with 3% to 10% down through FHA, VA, or conventional low-down-payment programs. A larger down payment reduces your loan amount and monthly payment, which can increase the home price you afford. Enter different down payment amounts in this calculator to see how each scenario changes your estimated price range and monthly housing cost.