How Much House Can I Afford? – Home Affordability Calculator
Estimate how much house you can afford based on your income, debts, down payment, and interest rate using the 28/36 guideline. This is an estimator for planning purposes only and does not determine mortgage eligibility.
How Much House Can I Afford?
How This Works: The calculator applies the 28/36 guideline to find your maximum affordable home price. Property tax is estimated as a percentage of home value; adjust the rate to match your location.
How the Calculation Works
The 28/36 Guideline: This calculator uses the 28/36 ratio as a commonly referenced lending guideline—not a universal requirement. The guideline suggests: (1) housing costs should not exceed 28% of gross monthly income, and (2) total debt should not exceed 36%. However, actual underwriting standards vary significantly by lender, loan program, credit profile, income documentation, borrower profile, and other factors. Different loan types (conventional, FHA, VA, USDA) have different requirements.
Calculation Method: The calculator estimates the maximum home price by finding where your principal-and-interest payment fits within the 28% guideline, then adds property tax, insurance, PMI, and HOA estimates to show your full monthly housing cost. This demonstrates whether the total fits within your debt capacity under this simplified model.
What This Includes: The calculator now includes property taxes (estimated), homeowners insurance, PMI (if entered), and HOA fees (if entered) in addition to principal and interest. All of these are part of your actual monthly housing payment.
What This Does NOT Include: HOA special assessments, mortgage insurance cancellation eligibility, taxes on investment properties, maintenance reserves, closing costs, or underwriting complexity. Actual qualification depends on comprehensive lender evaluation.
Disclaimer: This calculator provides an estimate for planning purposes only. It does not determine mortgage eligibility, represent a loan offer or approval, or predict actual lending decisions. Real mortgage approval depends on your complete financial picture, specific lender policies, comprehensive credit and income verification, employment history, and loan program requirements. Consult a lender for actual qualification details.
Worked Example
Fully Verified Example: Annual income $60,000 ($5,000/month gross), existing monthly debt $300, down payment $50,000, interest rate 6.5%, 30-year loan term, estimated property tax rate 1.2% annually, homeowners insurance $150/month, no PMI or HOA.
- 28% Rule (Housing Only): $5,000 × 0.28 = $1,400/month maximum
- 36% Rule (Total Debt): ($5,000 × 0.36) − $300 = $1,500/month maximum housing budget
- Binding Constraint: MIN($1,400, $1,500) = $1,400/month (28% rule is binding)
Working Backward to Find Maximum Home Price:
- Available for all housing costs (P&I + tax + insurance + PMI + HOA): $1,400/month
- Insurance already committed: $150/month
- Remaining for P&I and property tax: $1,250/month
- Solving for maximum home value given property tax at 1.2% annually:
- Maximum estimated home price: approximately $209,743
Monthly Payment Breakdown at This Price:
- Loan amount: $209,743 − $50,000 = $159,743
- Principal & Interest (30-year, 6.5%): ~$1,040/month
- Estimated property tax (1.2%/12): ~$210/month
- Homeowners insurance: $150/month
- Total estimated monthly housing cost: ~$1,400/month
Life of Loan:
- Total principal paid: $159,743
- Total interest paid (360 payments): ~$234,657
- Total amount paid: ~$394,400
Important Notes: This example assumes the property tax rate matches the 1.2% entered. Actual property taxes vary significantly by location—check your local rate. The insurance estimate is illustrative; actual premiums depend on the property. PMI is not included here but would apply if down payment were less than 20%. The 28/36 guideline is one reference point; actual lender approval depends on full underwriting, credit, and income verification.
How to Use This Calculator
What Influences Your Actual Affordability:
- Interest Rate: A higher interest rate increases principal-and-interest cost, but the dollar impact depends on the loan balance and loan term. Use the calculator to compare scenarios with different rates.
- Property Taxes & Insurance: These vary significantly by location and property type. The calculator now includes these in the total monthly housing cost. Adjust the property tax rate and insurance amount to match your area.
- Down Payment: A larger down payment reduces the loan amount required and thus the monthly payment. Down payment size may also affect mortgage insurance requirements, which vary by loan type and program.
- Existing Debt: Any existing monthly debt payments (car loans, credit cards, student loans) reduce how much you can borrow under the 36% debt limit.
- Loan Term: A shorter loan term (15 years vs. 30 years) increases monthly payments but reduces total interest. A longer term decreases monthly payments but increases total interest paid.
- Mortgage Type: Conventional, FHA, VA, and USDA loans have different down payment requirements, insurance structures, underwriting standards, and qualification requirements.
- Credit Profile: Lenders use credit score, income documentation, employment history, and savings reserves to determine actual approval amounts, rates, and terms.
Important Perspective: This calculator shows a general estimate under the 28/36 guideline. Your actual affordable payment depends on your complete financial picture, specific lender policies, loan program requirements, and personal comfort with your budget. Just because a lender might approve a certain amount does not mean that amount fits your household budget—consider your emergency fund, retirement contributions, discretionary spending, and life goals before committing to a purchase.
Frequently Asked Questions
What is the 28/36 guideline?
The 28/36 is a commonly referenced lending guideline, not a universal requirement. It suggests: (1) housing costs should not exceed 28% of gross income, and (2) total debt should not exceed 36% of gross income. However, actual underwriting standards vary significantly by lender, loan program, credit profile, and borrower circumstances. Different loan types (conventional, FHA, VA, USDA) have different underwriting approaches. This calculator uses 28/36 as a reference point only.
Do all lenders use 28/36?
No. While some lenders reference the 28/36 ratio, actual underwriting standards vary significantly. Different loan programs (conventional, FHA, VA, USDA) have different debt-to-income limits and approval criteria. Some lenders may be more flexible, others more strict. Your actual approval depends on the specific lender, loan program, comprehensive credit evaluation, income verification, employment history, and other factors.
Does this calculator now include taxes and insurance?
Yes, this calculator now includes estimated property taxes and homeowners insurance in the results, showing your total monthly housing cost. Adjust the property tax rate to match your location (varies widely by area). The calculator also allows you to include PMI and HOA fees if applicable. These all factor into your actual monthly payment.
How much down payment do I need?
Down payment requirements vary by loan program. Conventional loans typically require 3-20% down, FHA loans require 3.5-10%, VA loans may require 0%, and USDA loans may require 0%. Mortgage insurance rules depend on the loan type and program—they are not universal. If your down payment is less than 20% on a conventional loan, PMI may apply. Review the specific requirements of the loan program you are considering.
When can PMI be cancelled or removed?
PMI cancellation and removal rules depend on the mortgage type, applicable regulations, loan terms, payment history, lender/servicer requirements, and other circumstances. Different loan programs (conventional, FHA, VA, USDA) have different PMI rules. You must contact your specific lender or servicer for details on your loan.
Can I be approved for more than this calculator shows?
Possibly, depending on your specific financial profile, lender, and loan program. This calculator uses the 28/36 guideline as a simplified reference. Real lender underwriting is more comprehensive and considers credit score, income verification, employment history, savings reserves, debt history, and other factors. Approval amounts and terms vary significantly by lender. Contact a lender for actual qualification details.
How do interest rates affect my affordability?
A higher interest rate increases your monthly principal-and-interest payment. The resulting payment difference depends on the loan amount and loan term. Use the calculator to compare scenarios with different rates. A lower interest rate reduces the monthly payment for the same loan amount, potentially increasing the home price you can afford within your budget limit.
Is this a mortgage approval or a loan offer?
No. This calculator provides an estimate for educational and planning purposes only. It is not a mortgage approval, loan offer, commitment letter, or prediction of what a lender will approve. Actual mortgage qualification requires comprehensive lender underwriting, credit verification, income documentation, and evaluation of your specific financial profile.