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 income tax on $100K (single filer, 2026 brackets and the $16,100 standard deduction) comes to approximately $13,200. Add FICA (Social Security + Medicare) at 7.65%, and you're at about $20,800 in federal taxes and payroll deductions.

State taxes vary wildly. In Texas or Florida (no state income tax), your take-home is roughly $79,200. In California, subtract another ~$5,800 in state tax, dropping take-home to about $73,400. In New York State, it's about $74,000 (plus NYC tax if applicable, which would bring it down further to ~$70,500).

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.

How Much House Can Dual Income Earners Afford?

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).

What Different Incomes and Down Payments Buy

The maximum price depends on your income, the share of it you devote to housing, and how much you put down. The table below solves for the highest price whose full monthly payment (principal, interest, property tax at 1.25% of value, $2,000 a year of homeowners insurance, and PMI at an assumed 0.5% of the loan when down payment is under 20%) fits within a given share of gross income, using a 6.5% 30-year fixed rate. These are illustrative assumptions; your local tax rate, insurance, and current mortgage rate will move the results.

Gross income	Housing budget	20% down	10% down	5% down
$100,000	25% ($2,083/mo)	~$314,000	~$270,000	~$258,000
$100,000	28% ($2,333/mo)	~$355,000	~$305,000	~$291,000
$80,000	25% ($1,667/mo)	~$246,000	~$211,000	~$202,000
$80,000	28% ($1,867/mo)	~$279,000	~$239,000	~$228,000

Note how much a smaller down payment reduces the price you can reach: PMI and a larger loan both take a bite out of the same monthly budget. Many planners suggest staying at or below 25% of gross income rather than the 28% lender guideline, for room to save and cover maintenance.

Case Study: Can You Afford a $500,000 Home on $100,000?

With the same assumptions, a $500,000 purchase looks like this against a gross monthly income of $8,333:

Down payment	Loan	Principal and interest	Tax + insurance (+ PMI)	Total payment	Share of gross
20% ($100,000)	$400,000	$2,528	$688	~$3,216	38.6%
10% ($50,000)	$450,000	$2,844	$875	~$3,719	44.6%
5% ($25,000)	$475,000	$3,002	$886	~$3,888	46.7%

Even with 20% down, that is well above the 28% guideline and above the 36% total-debt guideline of $3,000 before adding a car payment or student loans. A lender might still approve a debt-to-income ratio in the low-to-mid 40s, but approval is not the same as comfort. Ways to close the gap include a larger down payment, paying off other debts first, buying down the rate with points, or adding a second income; the same $400,000 loan costs about $269/month more at 7.5% than at 6.5%, so even half a point matters. For a single $100,000 earner, a $350,000-$380,000 price range is a more sustainable target, while a $400,000 house on $80,000 is a similar stretch against a $279,000 baseline.

How Lenders Decide Your Maximum Mortgage

• Debt-to-income (DTI) is the main limit. The front-end ratio (proposed housing payment divided by gross monthly income) is ideally around 28%. The back-end ratio (all monthly debt payments including housing) is typically capped near 43% for conventional loans, and some lenders go higher with compensating factors. On $8,000 of gross monthly income with $500 of other debts, a 43% back-end cap allows $2,940 of housing payment.
• Existing debts reduce your ceiling directly. Every $100 of monthly debt payments lowers what you can borrow by roughly $15,000-$18,000 in price at these rates, so paying off a car loan or card balance 6-12 months before applying can raise your maximum noticeably.
• Income must be documentable. Lenders count salary, consistent bonuses and overtime, self-employment income averaged over two years of tax returns, and roughly 75% of rental income. Cash income that never appeared on a tax return usually will not count.
• Credit score affects your rate, not your DTI limit. Higher scores earn better rates; borrowers near the minimums pay noticeably more, and FHA loans accept lower scores with strict terms. On a $400,000 loan, a one-point higher rate adds roughly $270 a month. Improve utilization and avoid new credit before applying.
• Reserves and stability matter. Lenders like to see a couple of months of payments in savings after closing and about two years of steady employment.

Down Payment Options and Costs

Twenty percent is the classic target because it avoids PMI, but it is not a requirement. Typical minimums by loan type:

• Conventional: as little as 3% for some first-time buyers, otherwise 5%, with PMI until you reach 20% equity (which drops off automatically on most loans).
• FHA: 3.5% down with a credit score of 580 or higher, with mortgage insurance premiums that generally last for the life of the loan when you put less than 10% down.
• VA: 0% down for eligible veterans and service members, with no monthly mortgage insurance.
• USDA: 0% down for eligible rural properties and income-qualified buyers.

The trade-off is real. On a $400,000 home at 6.5%, principal and interest is about $2,452 a month with 3% down and $2,023 with 20% down, before PMI of roughly $130-$190 a month on the smaller down payments. That is a difference of over $600 a month, but it takes about $68,000 more cash up front. Also budget 2-5% of the price for closing costs, which is $8,000-$20,000 on a $400,000 home, so your savings target should be the down payment plus closing costs. State and local housing finance agencies often offer down payment assistance such as grants, forgivable second loans, and matched savings, sometimes at income limits higher than buyers expect, so check your state's program before assuming you must save it all yourself.

Saving the Down Payment in Two Years

Keep the money somewhere safe and accessible, such as a high-yield savings account, money market account, short-term CD or T-bill, because a market dip a few months before closing can wipe out years of saving. If your savings earn 4.5% APY, the monthly amount needed to reach each target in 24 months (starting from zero) is roughly:

Target	Monthly savings
$20,000	~$798
$30,000	~$1,197
$40,000	~$1,596
$60,000	~$2,394
$80,000	~$3,192

Automate a transfer on payday or split your direct deposit so the money never touches your spending account. The largest levers are housing and car costs (a roommate, a cheaper apartment, one fewer car), extra income, and directing windfalls such as a tax refund or bonus straight into the fund. If waiting for 20% would take four years or more, compare that against buying sooner with 5-10% down and paying PMI temporarily. Model both in the savings calculator and mortgage calculator, and use the home affordability calculator to see your own numbers.

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.