Most "how much house can I afford" calculators online will give you a number based on crude income multiples, and that number is almost always too high. I've watched people get approved for mortgages that made me wince. What a lender says you qualify for and what you can actually afford are two very different things — and in 2026's rate environment, that gap is wider than it's been in years.
With 30-year fixed rates averaging 6.46% as of early April 2026 (Freddie Mac) and the median monthly mortgage payment sitting at $2,061 nationally (MBA, February 2026), I wanted to lay out how affordability actually works — the ratios lenders use, the costs most buyers completely forget about, and a framework for picking a number that won't leave you stressed every month.
Lenders decide how much to approve you for based on two ratios. Both matter, and knowing how they work gives you a realistic ceiling before you start falling in love with listings.
Your total monthly housing costs — principal, interest, property taxes, homeowner's insurance, and PMI if applicable (collectively called PITI) — shouldn't exceed 28% of your gross monthly income. On a $100,000 salary, that's a max of $2,333/month for all housing costs, not just the mortgage payment itself. That distinction trips up a lot of first-time buyers.
All your monthly debt payments combined — housing plus car loans, student loans, credit card minimums, everything — shouldn't exceed 36% of gross income under conservative guidelines, or 43% under the qualified mortgage (QM) standard most conventional loans follow. FHA loans sometimes allow ratios up to 50%. But just because a lender will let you stretch that far doesn't mean your budget can handle it.
Key distinction: Lenders use gross income (before taxes). But you pay your mortgage with net income (after taxes). A $100,000 salary is roughly $6,500–$7,200/month take-home depending on your state. The 28% rule on gross ($2,333) might represent 32–36% of your actual take-home pay. That's a meaningful difference when budgeting.
The following table shows estimated maximum home prices at different income levels, assuming a 6.5% mortgage rate, 10% down payment, 1.1% property tax rate, $150/month insurance, and no other monthly debt. These are maximums based on the 28% front-end ratio — your comfortable number should be lower.
| Gross Annual Income | Max Monthly Housing (28%) | Estimated Max Home Price | Monthly P&I at 6.5% | Monthly PITI |
|---|---|---|---|---|
| $60,000 | $1,400 | $210,000 | $1,196 | $1,392 |
| $75,000 | $1,750 | $265,000 | $1,508 | $1,741 |
| $100,000 | $2,333 | $355,000 | $2,018 | $2,318 |
| $125,000 | $2,917 | $445,000 | $2,530 | $2,898 |
| $150,000 | $3,500 | $535,000 | $3,042 | $3,483 |
| $200,000 | $4,667 | $720,000 | $4,096 | $4,646 |
Assumptions: 30-year fixed at 6.5%, 10% down, 1.1% property tax, $150/month insurance, PMI at 0.7% of loan amount. No other monthly debts. Actual amounts vary by location, credit score, and lender.
Look at the $100,000 income row: max home price of $355,000. Not the $400,000+ that most online calculators spit out when they use looser ratios or conveniently ignore taxes and insurance. That gap — the $45,000+ difference — is exactly where buyers get into trouble.
This is the mistake I see more than any other: people budget for the mortgage principal and interest payment and forget about everything else. Here's what a $400,000 home actually costs per month with 10% down at 6.5%:
| Cost Component | Monthly Amount | Notes |
|---|---|---|
| Principal & Interest | $2,275 | 30-year fixed, 6.5% on $360K loan |
| Property Taxes | $367 | 1.1% of home value annually (national avg) |
| Homeowner's Insurance | $155 | Varies widely by state and coverage |
| PMI | $210 | 0.7% of loan amount (required with <20% down) |
| HOA (if applicable) | $0–$450 | Common for condos, townhomes, planned communities |
| Maintenance Reserve | $333–$667 | 1–2% of home value annually |
| Total | $3,340–$4,124 | 47–81% more than P&I alone |
So that $2,275 "mortgage payment" is really $3,340–$4,124 when you account for everything. That's the number you should be measuring against your take-home pay. It's the difference between owning a home comfortably and being house-poor.
Beyond the monthly stuff, homeownership hits you with expenses that renters never have to think about. Budgeting for these before you buy beats the alternative — which is the financial whiplash that catches most first-time owners off guard in year one.
On a $400,000 home, expect $8,000–$20,000 in closing costs. That covers lender origination fees, appraisal, title insurance, attorney fees, recording fees, and prepaid taxes and insurance. And those "no-closing-cost" mortgages some lenders advertise? The costs are just baked into a higher interest rate — you're paying them over 30 years instead of upfront, which usually costs you more in the long run.
A $400,000 home needs $4,000–$8,000 per year in maintenance and repairs on average. But "average" is misleading — you might spend $500 one year and $15,000 the next when the HVAC dies. Older homes trend toward the high end. The big-ticket items to plan for: roof replacement ($8,000–$15,000 every 20–30 years), HVAC ($5,000–$12,000 every 15–20 years), water heater ($1,500–$3,000 every 10–15 years), and appliance replacements ($500–$3,000 each as they fail).
Professional movers, utility deposits, window treatments, furniture for rooms your apartment didn't have, lawn equipment, tools, and the inevitable dozen Home Depot trips in the first month. Budget $3,000–$8,000 for the transition — more if you're furnishing a significantly larger space than what you're coming from.
This one catches people. Buyers look up the current property taxes on a listing and assume that's their number. It usually isn't. In many jurisdictions, a sale triggers a reassessment to current market value. If the previous owner held the home for 15 years through a period of appreciation, their tax bill could be significantly lower than what you'll owe. Always check with the county assessor for the post-purchase assessment, not the seller's current bill.
Before trusting any calculator — including the ones on this site — run your situation through these five questions. If you can't answer "yes" to all five, the price is probably too high.
1. Can I make this payment if my income drops 20%? Job loss, medical emergencies, reduced hours — these aren't hypothetical. A mortgage that needs two full incomes with zero margin is fragile. If you're a dual-income household, ask whether you could handle the payment on one salary for 6–12 months.
2. Does this leave room for retirement savings? You should still be putting away 15%+ for retirement even after buying. If the mortgage crowds out your 401(k) contributions entirely, you're trading future financial security for a nicer kitchen. Your 65-year-old self won't appreciate the trade.
3. Will I still have a 3–6 month emergency fund after the down payment? Draining every dollar for the down payment leaves you one broken water heater away from a financial crisis. And here's the irony: the moment you own a home is exactly when unexpected expenses become most likely.
4. Am I budgeting for full PITI, not just P&I? When someone asks "what's your mortgage payment?" and your answer doesn't include property taxes, insurance, and PMI — you're underestimating your housing cost by 30–50%.
5. Does this still make sense if I can't sell for 5 years? Selling costs — agent commissions, closing costs, repairs — typically run 8–10% of the sale price. If home values stay flat for a few years, you need significant equity just to break even. Buying only makes financial sense if you're staying long enough to build equity past those transaction costs.
"Put 20% down" used to be the universal advice. It's more nuanced now. Here's what each level actually means for your wallet:
| Down Payment | Cash Needed ($400K Home) | PMI? | Rate Impact | Monthly P&I |
|---|---|---|---|---|
| 3% (Conv.) | $12,000 | Yes (~1.0%) | +0.25–0.50% | $2,453 |
| 5% | $20,000 | Yes (~0.8%) | +0.125–0.25% | $2,402 |
| 10% | $40,000 | Yes (~0.5%) | Baseline | $2,275 |
| 20% | $80,000 | No | Best rate | $2,023 |
P&I estimates at 6.5% base rate, 30-year fixed. PMI and rate adjustments are approximate and vary by credit score and lender.
The gap between 10% and 20% down on a $400,000 home is $40,000 more cash upfront. That extra $40,000 saves you about $252/month in P&I and eliminates ~$150/month in PMI — roughly $402/month combined. So the extra $40,000 "pays for itself" in about 8.3 years. If you're staying that long and have the cash, 20% wins mathematically. But if it would drain your savings below 6 months of expenses, 10% down is the smarter move. PMI ends eventually; an empty savings account can spiral fast.
The strategy many financial planners now recommend: Put 10% down, keep 6 months of expenses in a high-yield savings account, and pay PMI temporarily. Once you reach 20% equity through a combination of payments and home appreciation (which you can request your lender to verify), PMI drops off. In many markets, this happens in 3–5 years without making any extra payments.
Your credit score doesn't just decide whether you get approved — it sets your interest rate, which directly controls how much home you can afford on the same monthly payment.
| FICO Score Range | Approx. Rate (30yr Fixed) | Monthly P&I ($360K Loan) | Total Interest Paid (30 yrs) |
|---|---|---|---|
| 760+ | 6.10% | $2,183 | $425,880 |
| 720–759 | 6.30% | $2,229 | $442,440 |
| 680–719 | 6.55% | $2,286 | $462,960 |
| 640–679 | 7.00% | $2,395 | $502,200 |
| 620–639 | 7.50% | $2,517 | $546,120 |
Rate estimates based on national averages as of Q1 2026. Actual rates vary by lender, loan type, and other risk factors. Total interest is approximate over 30-year term.
That's $334/month difference — or $120,240 over the life of the loan — just from credit score. If you're sitting below 740, spending 6–12 months improving your score before buying will likely save you more than any negotiation on the purchase price ever could.
Rates have hovered in the low-to-mid 6% range through early 2026. Freddie Mac reported a 6.46% average for 30-year fixed loans as of April 2, 2026. Both the Mortgage Bankers Association and Fannie Mae project rates staying in the low 6% range through the rest of the year, with the NAHB a bit more optimistic at 5.99%.
The median monthly mortgage payment nationally sits at $2,061 (MBA, February 2026), and the median first-time homebuyer age has climbed to 40. That number tells you everything about how long it takes to save a down payment in this environment.
The silver lining: inventory has improved in a lot of markets, wage growth is finally outpacing home price appreciation for the first time in years, and the regional picture is shifting. Northeastern and Midwestern metros — Hartford, Rochester, Worcester — are now leading Realtor.com's top housing markets with much better affordability than the Sun Belt cities that dominated recently. If you're flexible on location, your purchasing power could be dramatically different.
I know this is a homebuying guide, but I'd be doing you a disservice if I didn't say it: buying isn't always the better financial move. The breakeven depends on how long you stay, local rent-to-price ratios, and what you'd earn if you invested the down payment money instead.
A rough rule of thumb: if the full cost of owning (PITI + maintenance) exceeds rent for a comparable home by more than 40%, and you're not sure you'll stay 7+ years, renting and investing the difference may actually come out ahead. The Mortgage Calculator can help you compare scenarios, and the Home Affordability Calculator shows your true monthly cost at different price points.
Ready to calculate your specific situation? Use the free Home Affordability Calculator to see what you can afford based on your income, debts, and down payment — no signup required.
Related tools: Mortgage Calculator · Debt-to-Income Calculator · Refinance Calculator · Down Payment Calculator