How Much House Can I Afford? Complete 2024 Affordability Guide
Determine exactly how much house you can afford using income rules, DTI ratios, and hidden costs most buyers miss.
Buying too much house is one of the most common financial mistakes. Here’s how to calculate what you can truly afford.
The 28/36 Rule
Most lenders use the 28/36 rule as a guideline:
- 28% rule: Your monthly mortgage payment (P&I + taxes + insurance) shouldn’t exceed 28% of gross monthly income
- 36% rule: Total monthly debt (mortgage + all other debt payments) shouldn’t exceed 36% of gross monthly income
Example: $7,000/month gross income
- Max mortgage payment: $7,000 × 0.28 = $1,960/month
- Max total debt: $7,000 × 0.36 = $2,520/month
If you have $500/month in other debt payments, your maximum mortgage drops to $2,020/month.
What $1,960/Month Mortgage Buys
At current rates (~7%), a $1,960/month payment corresponds to approximately a $290,000 loan. Add your down payment to get your maximum home price.
With $60,000 down payment (20%): maximum home price ≈ $350,000
Hidden Costs Most Buyers Miss
Your mortgage payment is just part of homeownership costs:
| Cost | Monthly Estimate |
|---|---|
| Property taxes | $200-600 (varies widely by location) |
| Homeowner’s insurance | $80-150 |
| HOA fees | $0-500+ |
| PMI (if <20% down) | $80-200 |
| Maintenance/repairs | $200-500 (1% of home value/year) |
| Utilities (vs renting) | $50-200 increase |
True monthly cost can be $600-1,500 more than the mortgage payment alone.
Down Payment Options
| Down Payment | Loan Amount ($350K home) | PMI Required |
|---|---|---|
| 3% ($10,500) | $339,500 | Yes |
| 5% ($17,500) | $332,500 | Yes |
| 10% ($35,000) | $315,000 | Yes |
| 20% ($70,000) | $280,000 | No |
A 20% down payment eliminates PMI and gets better rates—but shouldn’t deplete your emergency fund.
Pre-Approval Process
Getting pre-approved before house hunting is essential:
- Gather tax returns (2 years), pay stubs, bank statements
- Apply with 3-5 lenders to compare rates
- Get official pre-approval letter (not just pre-qualification)
- Lock your rate when you find a home
The Real Affordability Test
Beyond the math: can you comfortably afford the home if:
- One income earner loses their job?
- Interest rates rise if you have an ARM?
- You need a new roof ($10,000-20,000) or HVAC ($5,000-15,000)?
A home you can “barely afford” mathematically often leads to being “house poor”—technically homeowners but unable to save, invest, or handle emergencies.
FAQ
Should I buy at the maximum I qualify for? Almost never. Lenders approve based on maximum risk tolerance, not optimal financial health. Aim for 20-25% below your maximum approval.
Is it better to buy or rent? Depends on location, timeline, and market conditions. If you’ll stay less than 3-5 years, renting is often financially superior due to transaction costs.
Use our Mortgage Calculator to find the exact payment for any home price and rate combination.
Written by KDMoney Finance Team
The Finance Calculator team creates comprehensive financial guides and tools to help you make smarter money decisions.