How Much House Can I Afford on $100K?

Earning $100,000 a year puts you well above the median household income in the US. But translating that salary into a home purchase price depends on several factors: your take-home pay, existing debts, down payment, interest rates, and where you live. Let's walk through the math step by step.

Step 1: What $100K Looks Like After Taxes

Your gross salary is $100,000, but lenders care about your gross income for qualification purposes while your take-home determines what you can actually afford month to month. Federal taxes on $100K (single filer, 2026 brackets) come to approximately $15,400. Add FICA (Social Security + Medicare) at 7.65%, and you're at about $22,800 in federal taxes and payroll deductions.

State taxes vary wildly. In Texas or Florida (no state income tax), your take-home is roughly $77,200. In California, subtract another ~$5,800 in state tax, dropping take-home to about $71,400. In New York State, it's about $72,000 (plus NYC tax if applicable, which would bring it down further to ~$68,500).

Step 2: The 28/36 Rule

Lenders use two key ratios to determine how much mortgage you can handle:

• Front-end ratio (28%): Your total housing costs (mortgage principal + interest + taxes + insurance) should not exceed 28% of gross monthly income.
• Back-end ratio (36%): All debt payments (housing + car loans + student loans + credit cards) should not exceed 36% of gross monthly income.

On $100K gross, your monthly gross income is $8,333. Using the 28% front-end rule, your maximum monthly housing payment is $2,333. At the 36% back-end, your total debt payments max out at $3,000.

Step 3: Maximum Home Price at Current Rates

With mortgage rates averaging 6.8% for a 30-year fixed in early 2026, here's what $2,333/month buys you, including estimated property tax (1.1%) and insurance ($150/month):

• With 20% down: Maximum home price of approximately $365,000. Your mortgage would be $292,000, with a monthly P&I payment of about $1,903, plus $335/month for taxes and insurance.
• With 10% down: Maximum home price of approximately $320,000. But you'll also pay PMI (about $130/month), which eats into your purchasing power.
• With 5% down: Maximum home price of approximately $290,000. PMI runs higher at about $165/month.

Step 4: How Existing Debt Changes the Picture

The 36% back-end ratio gives you $3,000/month for all debts. If you have a $400/month car payment and $300/month in student loans, that's $700 already spoken for. Your maximum housing payment drops from $2,333 to $2,300 (based on the back-end constraint minus existing debts). In practice, this might reduce your max home price by $15,000-$25,000.

If you have significant debt, paying it down before buying can meaningfully increase your purchasing power.

Step 5: State-by-State Differences

Where you buy matters enormously, both for affordability and because of tax treatment:

• Texas: No state income tax (higher take-home), but property taxes average 1.8%. On a $365K home, that's $6,570/year in property tax, reducing what you can borrow.
• California: State income tax cuts your take-home, but property taxes are lower (~0.75%). However, median home prices in most CA metros far exceed what $100K qualifies you for.
• Ohio: Moderate state tax (~3.5% effective), reasonable property taxes (~1.5%), and median home prices well within the $365K range. Your dollar stretches furthest in states like this.
• Florida: No state income tax, property taxes around 0.9%. A strong combination for buying power.

What About a Dual Income?

If you and a partner each earn $100K ($200K combined), the math changes dramatically. With a combined gross monthly income of $16,667, the 28% rule allows up to $4,667/month in housing costs. At 6.8% with 20% down, that qualifies you for a home around $730,000 — roughly double, as you'd expect.

Practical Tips for Buying on $100K

• Aim for a housing payment under 25% of gross to maintain a comfortable budget with room for savings and emergencies.
• Build up at least 20% down to avoid PMI, which can cost $100-$200/month on these price ranges.
• Shop rates aggressively. A 0.25% difference in rate on a $300K mortgage saves about $15,000 over the life of the loan.
• Don't forget closing costs — budget 2-5% of the purchase price ($7,000-$18,000 on a $365K home).

The Bottom Line

On a $100,000 salary with no other debt and 20% down, you can comfortably afford a home in the $340,000-$380,000 range at today's rates. That's realistic in many metros but will lock you out of high-cost cities like San Francisco, New York, or Boston without significant savings or a second income. Use our Home Affordability Calculator to plug in your exact numbers and get a personalized estimate.