Affordability scenario · Verified 2026-05-27
First-time buyer on $100K income with 5% down
Recommended home price: $290,000 using the 28/36 rule. Conservative ceiling: $285,000. Aggressive ceiling: $295,000. Monthly PITI at recommended: $2,356 (28% of gross income).
Recommended price
$290,000
Monthly PITI
$2,356
Down payment
$14,500
Housing DTI
28%
Monthly cost breakdown at $290,000
| Component | Monthly | Annual |
|---|---|---|
| Principal & interest | $1,833 | $21,996 |
| Property tax (1% assumed) | $242 | $2,904 |
| Homeowners insurance (0.5%) | $121 | $1,452 |
| PMI (down < 20%) | $161 | $1,932 |
| Total PITI | $2,356 | $28,272 |
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The 28/36 rule explained
Standard lender affordability rule used by most US mortgage underwriters:
- 28%: Housing payment (PITI) should not exceed 28% of gross monthly income. For $100,000 income, that's $2,333/month max.
- 36%: Total debt payments (housing + car loan + student loans + credit card minimums) should not exceed 36% of gross income. For your scenario: $3,000 − $600 existing debt = $2,400 available for housing.
- Below 28%/36% gives you breathing room. Above signals stress.
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Full interactive calculator
How much house can I afford
Plug in your specific income, debts, down payment, and rate to get a personalized recommendation. Includes opportunity cost analysis (buy vs invest the difference).
Open the calculator →Educational tool. Assumes property tax 1% and insurance 0.5% of home value annually (national averages — your state may differ). Math validated against Fannie Mae and Zillow affordability calculators. Verified 2026-05-27.