How to Calculate How Much House You Can Afford
The most widely used method for determining home affordability is the 28/36 rule. Your monthly housing costs (mortgage, taxes, insurance) should not exceed 28% of your gross monthly income (front-end ratio), and your total monthly debts including housing should not exceed 36% of gross income (back-end ratio). Some loan programs allow higher ratios, but staying within 28/36 provides a comfortable margin.
- 1Gross monthly income: $85,000 / 12 = $7,083
- 2Max housing payment (28%): $7,083 x 28% = $1,983
- 3Max total debt (36%): $7,083 x 36% = $2,550
- 4Available for housing (36% rule): $2,550 - $500 debts = $2,050
- 5Using the lower of $1,983 (28% rule): $1,983
- 6Subtract property tax (~$330/mo) and insurance ($150/mo): $1,503 for P&I
- 7Max loan at 6.75% for 30 years: ~$231,000
- 8Max home price: $231,000 + $50,000 down = $281,000
Home Affordability by Income (2026)
| Annual Income | Max Monthly Payment | Max Home Price | Loan Amount |
|---|---|---|---|
| $50,000 | $1,167 | $175,000 | $140,000 |
| $60,000 | $1,400 | $210,000 | $168,000 |
| $75,000 | $1,750 | $260,000 | $208,000 |
| $85,000 | $1,983 | $295,000 | $236,000 |
| $100,000 | $2,333 | $350,000 | $280,000 |
| $125,000 | $2,917 | $440,000 | $352,000 |
| $150,000 | $3,500 | $530,000 | $424,000 |
Total Monthly Housing Costs Beyond the Mortgage
- Mortgage principal and interest (the largest component)
- Property taxes (~1.1% of home value annually, varies widely by location)
- Homeowners insurance ($1,200-$3,000+ per year)
- Private Mortgage Insurance (PMI): 0.5-1.5% if down payment is less than 20%
- HOA fees: $200-$500+ per month for condos or planned communities
- Maintenance and repairs: Budget 1-2% of home value per year
- Utilities: $200-$400+ per month depending on size and location
Just because a lender approves you for a certain amount does not mean you should spend that much. Many financial advisors recommend spending no more than 3-4x your gross income on a home, or keeping housing costs under 25% of take-home pay. Leave room in your budget for savings, emergencies, and enjoying life.
How Down Payment Affects Affordability
| Down Payment | Down % | Max Home | Monthly Payment | PMI? |
|---|---|---|---|---|
| $0 (VA/USDA) | 0% | $245,000 | $1,983 | No/Yes |
| $15,000 | 5% | $260,000 | $1,983 | Yes (~$125/mo) |
| $30,000 | 10% | $275,000 | $1,983 | Yes (~$100/mo) |
| $50,000 | 20% | $295,000 | $1,983 | No |
| $75,000 | 25% | $315,000 | $1,983 | No |
Mortgage Rates and Affordability
Interest rates have a dramatic impact on affordability. For every 1% increase in rates, your purchasing power drops by approximately 10%. At 5% interest, a $2,000/month payment supports a $373,000 loan. At 7%, the same payment only supports a $301,000 loan. In the 2026 rate environment of 6.5-7%, buyers can afford significantly less home than they could when rates were 3-4% in 2020-2021.
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