🏠 Home Affordability Calculator
Find out how much house you can afford based on your income, debts, and down payment.
⚙️ How This Home Affordability Calculator Works
This calculator uses the same two-ratio method that U.S. mortgage lenders use to evaluate your application. You enter your income, debts, down payment, and loan details — the tool runs the math instantly and tells you the maximum home price you can realistically qualify for, along with a safer conservative estimate.
Enter Your Income
Add your annual gross income before taxes. If you are applying with a co-borrower — a spouse or partner — add their income too. The calculator combines both into a single household income figure.
Enter Your Monthly Debts
Include all recurring monthly debt payments: car loans, student loans, credit card minimum payments, and personal loans. Do not include utilities, groceries, or subscriptions — only debts that appear on your credit report.
Enter Loan & Property Details
Add your down payment, expected interest rate, loan term, property tax rate, and insurance costs. If you are unsure of the current rate, the default 6.8% reflects the 2024–2025 U.S. average for a 30-year fixed mortgage.
Read Your Results
The tool calculates your maximum affordable home price using both the 28% and 36% rule, then picks the lower (safer) figure. It also breaks down your estimated monthly payment into principal, interest, taxes, insurance, HOA, and PMI.
Check Your DTI Bars
The three color-coded bars show how your numbers compare to lender guidelines. Green means you are comfortably within limits. Yellow means caution. Red means most traditional lenders will likely decline your application at this price.
Adjust & Explore Scenarios
Change any input and results update instantly. Try increasing your down payment, choosing a 15-year term, or reducing monthly debts to see how each decision changes your buying power. This is the most powerful way to use the tool.
💡 Pro tip: Run the calculator three times — once with your actual numbers, once with 20% down to eliminate PMI, and once with a 15-year term to see long-term interest savings. The difference is often eye-opening.
📈 The 28/36 Rule — How Lenders Decide What You Can Afford
When you apply for a mortgage, lenders do not just look at your income in isolation. They use two specific ratios — called the front-end ratio and the back-end ratio — to determine how much house you can afford. Understanding these rules before you apply can save you time, protect your credit score, and help you negotiate from a position of knowledge.
Why Your DTI Matters More Than Your Income
Two buyers with identical $100,000 salaries can qualify for very different loan amounts. If Buyer A has $200/month in debt payments and Buyer B has $1,200/month, Buyer B's buying power is reduced by roughly $100,000–$150,000 — even though their incomes are exactly the same. Paying down existing debts before applying for a mortgage is often the fastest way to increase your home buying budget.
⚠️ Important: Qualifying for a loan amount does not mean you should borrow the maximum. Lenders approve based on risk — your personal financial goals, job stability, and lifestyle costs may mean the right number is 10%–20% below your maximum approved amount.
💰 What Makes Up Your Monthly Mortgage Payment
Most first-time buyers focus only on the principal and interest (P&I) payment — but your real monthly cost is higher. Lenders use the term PITI to describe all four components they require you to pay. If you put less than 20% down, a fifth cost — PMI — is added on top.
📍 PITI Breakdown
- Principal Reduces your loan balance
- Interest Cost of borrowing money
- Property Taxes Collected monthly, paid annually
- Insurance (Homeowners) Lender-required coverage
- PMI (if <20% down) 0.5%–1.5% of loan/year
- HOA Fees (if applicable) Varies by community
📈 U.S. Average Property Tax Rates by Region
- Northeast (NJ, CT, NY) 1.8% – 2.5%
- Midwest (IL, OH, MI) 1.2% – 2.2%
- South (TX, FL, GA) 0.8% – 1.9%
- West (CA, WA, OR) 0.5% – 1.1%
- Mountain (AZ, CO, NV) 0.5% – 0.9%
- National Average ~1.1%
How PMI Works — and How to Avoid It
Private Mortgage Insurance protects the lender — not you — if you default on the loan. It typically costs between 0.5% and 1.5% of the original loan amount per year, divided into monthly payments. On a $350,000 loan, that is roughly $145–$437 added to your bill every single month. PMI is automatically removed once your loan balance drops below 80% of the original home value, or you can request removal earlier if your home has appreciated.
🏢 Mortgage Loan Types — Side-by-Side Comparison
Not all home loans are created equal. The loan type you choose affects your interest rate, down payment requirement, monthly payment, and total cost over the life of the loan. Here is a breakdown of the most common mortgage types available to U.S. buyers in 2025.
| Loan Type | Min. Down | Min. Credit | PMI Required | Best For | Key Advantage |
|---|---|---|---|---|---|
| Conventional 30-Year | 3% – 5% | 620+ | Yes, if <20% down | Most buyers with good credit | Widely available, flexible terms |
| Conventional 15-Year | 3% – 5% | 620+ | Yes, if <20% down | Buyers wanting less interest | Lower rate, faster equity build |
| FHA Loan | 3.5% | 580+ | Yes — full loan term | First-time buyers, lower credit | Easier to qualify, low down |
| VA Loan | 0% | No minimum | No PMI ever | Veterans, active military | Zero down, no PMI |
| USDA Loan | 0% | 640+ | Guarantee fee instead | Rural and suburban buyers | Zero down in eligible areas |
| Jumbo Loan | 10% – 20% | 700+ | Varies by lender | High-cost market buyers | Loans above $766,550 limit |
| ARM (Adjustable Rate) | 3% – 5% | 620+ | Yes, if <20% down | Short-term owners, investors | Lower initial rate 5–10 yrs |
* Rates, limits, and requirements change frequently. Conforming loan limit shown is the 2024 baseline for most U.S. counties. High-cost areas (e.g., San Francisco, NYC) have limits up to $1,149,825. Always verify current terms directly with lenders.
Conventional vs. FHA — Which Is Right for You?
If your credit score is above 700 and you can put 5% or more down, a conventional loan almost always works out cheaper over time — even if the monthly payment looks similar. FHA loans charge mortgage insurance for the entire loan term if you put less than 10% down, while conventional PMI disappears once you reach 20% equity. On a $350,000 purchase, that difference can exceed $25,000 over 30 years.
If your credit is between 580 and 660, or you have limited savings, an FHA loan is often the only realistic path to homeownership — and it is a legitimate, widely used option. Over 1.3 million FHA loans were originated in the U.S. in 2023 alone.
💰 Down Payment Strategies — How Much Should You Actually Put Down?
The 20% down payment rule is outdated advice for many buyers. Today, U.S. buyers put down an average of 13% overall, and first-time buyers average just 8%. The right down payment depends on your financial situation, loan type, local market, and long-term goals.
✅ Reasons to Put More Down
- Eliminate PMI entirely Save $100–$400/mo
- Lower monthly payment More cash flow
- Better interest rate 0.25%–0.5% lower
- Stronger offer in competitive markets Seller confidence
- Build equity faster Less risk if market dips
⚠️ Reasons to Put Less Down
- Keep cash for emergencies 3–6 month fund
- Cover closing costs (2%–5%) Often $6k–$18k
- Home repairs after purchase Budget buffer
- Invest the difference May outperform PMI cost
- Buy sooner in rising markets Appreciation benefit
First-Time Buyer Down Payment Assistance Programs
Most U.S. states offer down payment assistance (DPA) programs for first-time buyers, typically defined as someone who has not owned a home in the past 3 years. These programs provide grants or low-interest second loans of $5,000–$25,000. The HUD website maintains a state-by-state directory of approved programs. Income limits and property price caps apply in most cases.
💡 Did you know? Fannie Mae's HomeReady and Freddie Mac's Home Possible programs allow conventional loans with just 3% down for buyers who meet income limits — with lower PMI rates than standard loans. Ask lenders specifically about these programs if your income is at or below 80% of your area's median income.
🌟 How Your Credit Score Affects Your Mortgage Rate and Buying Power
Your credit score is the single biggest factor lenders use to set your mortgage interest rate — more than your income, your down payment, or your job history. A difference of just 60–80 points on your FICO score can change your interest rate by 0.5% to 1.5%, which translates to tens of thousands of dollars over the life of a loan.
| Credit Score Range | Rating | Est. 30-Yr Rate | Monthly Payment on $350K Loan | Total Interest Paid |
|---|---|---|---|---|
| 760 – 850 | Excellent | ~6.50% | ~$2,213 | ~$446,680 |
| 700 – 759 | Good | ~6.75% | ~$2,271 | ~$467,560 |
| 680 – 699 | Above Average | ~7.00% | ~$2,329 | ~$488,440 |
| 660 – 679 | Average | ~7.25% | ~$2,389 | ~$510,040 |
| 640 – 659 | Fair | ~7.75% | ~$2,508 | ~$552,880 |
| 580 – 639 | Poor | ~8.50%+ | ~$2,691 | ~$619,560 |
* Rates are approximate estimates based on 2024–2025 national averages. Actual rates vary by lender, loan type, market conditions, and individual application details.
3 Ways to Improve Your Credit Score Before Applying
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Pay down credit card balances. Your credit utilization ratio — how much of your available credit you are using — accounts for 30% of your FICO score. Getting below 30% utilization on each card can add 20–50 points within 30–60 days of a billing cycle close.
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Do not open new accounts in the 6 months before applying. Each hard inquiry from a new credit card or loan application temporarily lowers your score by 5–10 points. Multiple inquiries in a short window look risky to mortgage underwriters.
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Dispute errors on your credit report. The FTC reports that 1 in 5 Americans has an error on their credit report. Disputing and correcting inaccurate negative items is free and can produce significant score gains. Pull your free report at AnnualCreditReport.com before applying.
✅ Before You Apply — Mortgage Readiness Checklist
Getting pre-approved is not the same as being financially ready to buy. Use this checklist to assess whether now is the right time to apply — or whether a few months of preparation could save you thousands.
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Stable income for at least 2 years. Lenders want 2 years of W-2s or tax returns showing consistent income. Recent job changes are not automatic disqualifiers, but switching to self-employment shortly before applying is a red flag for underwriters.
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Emergency fund separate from your down payment. After closing, you should have 3–6 months of living expenses in reserve. Lenders increasingly verify this, and it protects you if the furnace breaks or you lose a job in year one.
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Budget for closing costs (2%–5% of purchase price). On a $400,000 home, closing costs run $8,000–$20,000 and must be paid at closing — they are rarely rolled into the loan on conventional purchases. Seller concessions can help, but do not count on them in competitive markets.
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Get pre-approved before shopping — not pre-qualified. Pre-qualification is an informal estimate based on self-reported data. Pre-approval involves a full credit pull and document review. Sellers in most U.S. markets will not accept an offer without a pre-approval letter.
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Compare at least 3 lenders. Research by Freddie Mac shows that borrowers who compare just 3 lenders save an average of $1,500 over the first 5 years. Comparing 5 lenders doubles those savings. Shopping multiple lenders within a 45-day window counts as one inquiry on your credit report.
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Do not make large purchases before closing. Buying a car, new furniture, or opening new credit accounts after pre-approval but before closing can change your DTI ratio and cause your loan to be denied at the last moment — a common and costly mistake.