How Much House Can You Afford? The Complete 2026 Guide
Use the 28/36 rule, DTI ratio, and real income examples to calculate exactly how much home you can afford — and avoid the mistakes that trap buyers.
The most common homebuying mistake is stretching to buy the most expensive house a lender will approve. Lender approval and genuine affordability are very different things. This guide gives you a realistic framework for determining what you can comfortably afford.
The 28/36 Rule Explained
The 28/36 rule is the traditional benchmark used by lenders and financial planners:
- •28% Rule: Your monthly housing costs (PITI — principal, interest, taxes, insurance) should not exceed 28% of your gross monthly income
- •36% Rule: Your total monthly debt (housing + car loans + student loans + credit cards) should not exceed 36% of your gross monthly income
Real Income Examples
| Annual Income | Gross Monthly | 28% Max Housing | Est. Home Price* |
|---|---|---|---|
| $60,000 | $5,000 | $1,400/mo | ~$220,000 |
| $80,000 | $6,667 | $1,867/mo | ~$295,000 |
| $100,000 | $8,333 | $2,333/mo | ~$370,000 |
| $120,000 | $10,000 | $2,800/mo | ~$445,000 |
| $150,000 | $12,500 | $3,500/mo | ~$560,000 |
*Estimated home price assumes 20% down, 6.75% rate, 30-year term, and $500/mo in taxes and insurance.
Debt-to-Income (DTI) Ratio: What Lenders Actually Use
Modern lenders focus heavily on your DTI ratio. There are two types:
- •Front-end DTI: housing costs ÷ gross monthly income (lenders want below 28–31%)
- •Back-end DTI: all monthly debts ÷ gross monthly income (lenders want below 43–45% for conventional loans)
A $100,000 income buyer with $500/month in student loans and $300/month in car payments already has $800/month in non-housing debt. Their back-end DTI ceiling leaves only $2,933 − $800 = $2,133 for housing — less than the 28% front-end rule suggests.
Pay down debt before buying
Eliminating a $350/month car payment before applying for a mortgage can increase your borrowing power by $55,000–$65,000 at current rates — far more than the car is worth.
The Hidden Costs Buyers Often Miss
When setting your budget, account for costs beyond PITI:
| Cost | Typical Range | Notes |
|---|---|---|
| Closing costs | 2–5% of loan | Due at closing; some can be rolled in |
| Moving costs | $1,000–$5,000 | Local vs. long-distance |
| Immediate repairs | $2,000–$20,000 | Even "move-in ready" homes need work |
| Maintenance reserve | 1% of home value/yr | $4,000/yr on a $400k home |
| Utilities increase | $200–$600/mo | Larger home = higher costs |
| Furniture & appliances | $5,000–$20,000 | Especially first-time buyers |
Beyond the Rules: The "Sleep Test"
The 28/36 rule is a starting point, not a ceiling. Run this scenario: if you lost your job today and went two months without income, could you still make mortgage payments? If the honest answer is no, you're buying too much house.
Financial advisors often recommend a "financial test drive": before buying, set aside the full projected mortgage payment each month for 3–6 months. If you can do it comfortably without lifestyle strain, you can afford the payment. If it's a stretch, consider a lower price point.
How Much Down Payment Do You Need?
- •Conventional loan: 3–20% down (under 20% requires PMI)
- •FHA loan: 3.5% down (with 580+ credit score)
- •VA loan: 0% down (veterans and active military)
- •USDA loan: 0% down (rural areas, income limits apply)
- •Jumbo loan: typically 10–20% down
Putting more down reduces your monthly payment, eliminates PMI sooner, and often gets you a better rate. But don't drain your emergency fund to reach 20% — keeping 3–6 months of expenses in cash is more important than avoiding PMI.
Don't max out your approval
Lenders will approve you for more than you should borrow. A lender approval is based on your income and debts — it doesn't account for your lifestyle, savings goals, childcare costs, or planned expenses. Set your own limit, then shop within it.
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Disclaimer: All figures in this article are illustrative estimates. Actual mortgage rates, payments, and terms vary based on your credit score, lender, location, and market conditions. MortgageInsightHub is not a lender or financial advisor. Consult a licensed mortgage professional before making financial decisions.