Multi-Method Home Affordability Calculator
| Income | No Debt | Avg Debt | Monthly PITI | Details |
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Which Method Should I Use?
- 28/36 Rule — Use this for lender qualification. It's what banks actually use, factoring in your existing debts. Most accurate for pre-approval planning.
- 25% Take-Home — Use this for personal budgeting. More conservative — leaves room for savings, emergencies, and lifestyle costs beyond housing.
- 3× Income — Use this for a quick sanity check only. Ignores debts, down payment, and rate — can mislead buyers with existing debt or high-rate environments.
Estimates only. Consult a licensed mortgage professional before making purchase decisions.
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The 28/36 Rule Explained With Real Numbers
The 28/36 rule has two constraints. Front-end: your total housing payment (principal, interest, property taxes, insurance) cannot exceed 28% of gross monthly income. Back-end: all monthly debts including housing cannot exceed 36%. The binding constraint is whichever limit is tighter for your specific situation.
On $90,000/year ($7,500/mo gross) with $400/month in existing debts: the 28% limit gives $2,100/mo for housing. The 36% limit gives $2,700/mo total debt service, minus the $400 you already owe = $2,300/mo available for housing. The front-end limit of $2,100/mo is binding. At 6.94% on a 30-year loan with 10% down and 1.1% tax rate, $2,100/mo supports a home price of approximately $295,000–$325,000.
Formula: Front-End DTI = Housing Costs ÷ Gross Monthly Income × 100. Back-End DTI = (Housing + All Debts) ÷ Gross Monthly Income × 100. Max home price = reverse-solve for price where PITI ≤ min(28%, 36% − other debts%) × income.
Hidden Costs That Change Your Real Budget
Most buyers focus on the mortgage payment and underestimate the full cost of ownership. Property taxes alone add $200–$500/month on a typical $350,000 home depending on your state. Homeowners insurance adds another $125–$210/month. PMI (if you put down less than 20%) adds 0.5–1.5% of the loan value annually — on a $300,000 loan, that's $125–$375/month.
HOA fees are invisible until you're under contract — the national median in HOA communities is $250/month, and in many condo or planned developments it runs $400–$800/month. Maintenance is the most underestimated line item: financial planners recommend budgeting 1–2% of home value annually. On a $400,000 home that's $4,000–$8,000/year, or $333–$667/month that never shows up in a mortgage calculator.
The real monthly cost of owning a $400,000 home in 2026 is typically $3,200–$4,000/month all-in — not the $2,200–$2,600 that the mortgage payment alone suggests. Use our home buying budget calculator for a full cost breakdown including reserves.
How to Improve How Much You Can Afford
Three levers move the needle most: (1) Reduce monthly debts. Paying off a $350/month car loan increases your back-end borrowing room by $50,000–$60,000 at current rates — the single highest-ROI action before applying for a mortgage. (2) Increase down payment. Each additional $20,000 down reduces your loan by $20,000, eliminates PMI sooner, and shrinks your monthly payment. (3) Wait for rates to move. A 0.5% rate drop on a $300,000 loan is worth $90/month and roughly $30,000 more in home price at the same payment.
Credit score matters too — a 760+ score can save 0.75–1% on your rate versus a 620 score. On a $350,000 loan, that's $150–$225/month and $55,000–$80,000 over 30 years. Getting your score above 740 before applying is worth the wait for most buyers.
First-Time vs Move-Up Buyer: Different Math
First-time buyers face a cash-to-close constraint that move-up buyers don't. With 5% down on a $350,000 home, you need $17,500 down payment plus $7,000–$17,500 in closing costs — a total of $24,500–$35,000 cash to close. Move-up buyers fund this gap from home equity, making their constraint primarily income-based rather than savings-based.
First-time buyers also have access to programs that reduce this barrier: FHA loans at 3.5% down (580+ credit score), Conventional 97 at 3% down (620+ credit), Fannie Mae HomeReady and Freddie Mac Home Possible at 3% down for income-qualified buyers, and state-level down payment assistance programs that can cover 3–5% of the purchase price as a grant or second mortgage. See our first-time buyer guide for program eligibility details.
Move-up buyers face a different constraint: they may be buying before selling their current home, creating a bridge-loan situation, or they may be limited by the conforming loan limit ($806,500 in 2026 for standard markets). Above that limit, jumbo loan qualification is stricter and rates are typically 0.25–0.5% higher. See affordability at $125K income and affordability at $150K for move-up buyer scenarios.
How Much House Can You Afford At Every Income Level
Quick estimates using the 28/36 rule at 6.94%, 1.1% property tax, $150/mo insurance, and typical debt for each income tier. Click any income level for the full analysis.
→ View full affordability table for all income levels
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Frequently Asked Questions
How much house can I afford on a $100,000 salary?
On $100,000/year with no existing debts and 20% down, you can typically afford $380,000–$430,000 at 6.94%. The 28% rule gives $2,333/month for housing. At 6.94%, that supports a loan of about $348,000 — or a $435,000 home with 20% down. With $500/month in existing debts and 10% down, that drops to $305,000–$340,000. See the full $100K income affordability guide.
What salary do I need to afford a $400,000 house?
To comfortably afford $400,000 at 7% with 10% down, you need approximately $95,000–$110,000 household income with minimal existing debt. Monthly PITI on a $360,000 loan runs roughly $2,800–$3,100, requiring $10,000–$11,000/month gross ($120,000–$132,000/year). Add $500/month in existing debts and the required income rises to $130,000+.
Can I afford a house if I make $50,000 a year?
Yes, in many US markets. On $50,000/year with moderate debt and FHA 3.5% down, most buyers can afford $155,000–$175,000. With no debt and 10% down, the ceiling rises to $185,000–$200,000. FHA loans at 3.5% down (580+ credit score) are the primary path at this income. Focus your search on Midwest and Southern markets where this budget has real purchasing power. Full $50K income guide →
Is it smart to buy at the top of my affordability range?
No — lenders approve the maximum you qualify for, not the maximum you should spend. Financial advisors recommend staying 10–15% below your qualification limit. The buffer absorbs: job changes (your income might drop), rate adjustments on ARMs, unexpected medical costs, home maintenance (budget 1–2% of value annually), and family milestones like children or aging parents. Use our budget calculator to model the realistic monthly cost including maintenance reserves.
Does the 28/36 rule still apply with today's rates?
Yes — the 28/36 rule is a lender qualification standard, not a historical guideline. What changes with higher rates is the home price those ratios support. At 4% (early 2022) vs 7% (2026), the same $2,100/month front-end limit supported a $440,000 home vs a $315,000 home. The rule stays the same; the purchasing power it unlocks shrinks sharply at higher rates.
What income do I need to afford a $500,000 house?
At 7% with 20% down ($100,000 down), monthly PITI on a $400,000 loan is approximately $3,400–$3,700. The 28% rule requires $12,100–$13,200/month gross income — or roughly $145,000–$160,000/year. With $500/month in existing debts, the required income rises to $160,000–$175,000/year. See the $150K income guide →
Last updated: May 2026 · See all income levels →