A $100,000 salary sounds like plenty of house-buying power, but the honest answer in 2026 is more modest than most people expect: with current mortgage rates, a buyer earning $100k typically qualifies for a home priced between $300,000 and $360,000. The exact figure depends on your existing debt, down payment, and the interest rate you lock. Here is how lenders actually calculate it.
The number surprises people because affordability is driven far more by monthly cash flow and interest rates than by the sticker price of the home. The same salary bought a much larger house when rates were 3% than it does at 7%.
Nearly every mortgage lender screens applicants with two ratios:
On a $100,000 salary, gross monthly income is about $8,333. That caps your housing payment at roughly $2,333/month (28%) and your total debt at $3,000/month (36%).
Once you know your maximum monthly payment, you work backwards. A $2,333 monthly budget doesn't all go to the loan — property taxes (roughly 1.1% of value per year on average), homeowner's insurance, and possibly PMI eat into it. After reserving for those, roughly $1,700–$1,850 is left for principal and interest.
| Mortgage rate | Affordable home price* |
|---|---|
| 5.5% | ~$385,000 |
| 6.5% | ~$345,000 |
| 7.5% | ~$310,000 |
*Assumes 10% down, no other debt, average property tax and insurance. Your number will differ.
Existing debt is the biggest killer. A $500/month car payment doesn't just reduce your budget by $500 — because of the 36% back-end cap, it can cut your affordable home price by $60,000–$80,000. Paying off a car or student loan before applying often does more for your buying power than saving another $10,000 in down payment.
A larger down payment reduces the loan and can eliminate PMI at 20%, freeing more of your payment for principal. Your credit score determines your rate — the gap between a 740 and a 660 score can be 0.5–1% in rate, which is tens of thousands of dollars over the loan.
See your exact monthly payment and total interest for any home price and rate.
Mortgage Calculator →It's a stretch in 2026. A $400,000 home usually requires either a large down payment (20%+), zero other debt, or a household income closer to $115k-$125k at current rates. It's possible but leaves little room in your budget.
It's a guideline, not a law. Some loan programs (FHA, VA) allow higher ratios, up to 43-50% back-end in some cases. But borrowing to the maximum leaves you 'house poor' with little margin for emergencies, so the 28/36 rule is a healthier target than the lender's ceiling.
Lenders use gross (pre-tax) income for the ratios. But when budgeting for real life, check the payment against your take-home pay too — a payment that's 28% of gross can be 38%+ of net after taxes and retirement contributions.