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How to Use the Home Affordability Calculator
Use this free home affordability calculator — also called a house purchasing power estimator — to estimate how much house you may be able to afford based on your income, down payment, interest rate, loan term, property taxes, and homeowners insurance. The result gives you a useful starting point for planning your home search, but it is not a mortgage approval or lending decision.
Begin by selecting whether you are purchasing the home as a single buyer or using two incomes. Enter your gross income and choose how you get paid. Enter your down payment, interest rate, loan term, property tax rate, and annual homeowners insurance including any HOA fees you know about. Click Calculate My Home Affordability to view your estimated affordable home price and monthly housing costs. If you are wondering what salary you need for a $300,000 or $400,000 house, this calculator works backward from your income to show you your real purchasing power. Your actual mortgage qualification may differ because lenders also review your credit, monthly debts, employment history, available savings, loan program, mortgage insurance, and other financial information.
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How This Home Affordability Calculator Estimates Your Result
This mortgage affordability calculator uses the 28% rule as a general guideline. It converts your annual income to gross monthly income and estimates a target monthly housing payment. It then factors in principal, interest, property taxes, homeowners insurance, and loan term to estimate an affordable home price based on your debt-to-income (DTI) ratio and current interest rates.
This estimate does not automatically include PMI, HOA fees, flood insurance, or maintenance costs. Buyers who want a home affordability calculator including HOA and property taxes should enter those amounts in the local estimates section. Car loans, student loans, credit card payments, and other debts affect your debt-to-income (DTI) ratio and reduce the mortgage amount you may qualify for — which is why it helps to calculate your max home price with student loan debt included in your full budget picture.
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If existing balances are making it harder to save for a down payment or lowering the amount of mortgage you may qualify for, the Calculate This Way Debt Snowball Calculator can help you organize your debts and create a step-by-step payoff plan. Reducing required monthly debt payments may improve your overall budget and could strengthen your financial position before applying for a mortgage.
This estimate also does not account for closing costs, maintenance, repairs, utilities, furniture, or emergency savings. Budget for these separately when determining how much home fits your financial situation.
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Before choosing a home price range, use the Calculate This Way Budget Calculator to compare your estimated mortgage payment with your current income and monthly expenses. A complete budget can help you determine whether there will still be enough money available for utilities, groceries, transportation, savings, home maintenance, and unexpected repairs after purchasing the home.
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Example Home Affordability Calculation
Example Scenario
Single buyer, $65,000 annual income, 10% down payment, 30-year mortgage at 6.75% interest, 1.2% property tax rate, $1,400 annual homeowners insurance.
Gross monthly income: $65,000 ÷ 12 = $5,416.67
Using the 28% guideline: $5,416.67 × 28% = $1,516.67 monthly housing target
After estimating property taxes and insurance, the remaining amount supports principal and interest. In this example, the estimated affordable home price is approximately $305,000 (before PMI, HOA fees, flood insurance, or other monthly debts). With a 10% down payment ($30,500), the estimated loan amount is approximately $274,500. Actual results may vary.
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What Every First-Time Buyer Needs to Know
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Down Payment Assistance May Reduce Upfront Costs
Many programs exist at the state, city, county, nonprofit, and employer level. Some can be combined, but not guaranteed. Each has its own income limits, property requirements, and repayment rules.
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Bank of America and Chase Offer Homebuyer Assistance
Bank of America offers up to $7,500 (or up to 3% / $10,000 max) toward down payment or closing costs. Chase offers $2,500 or $5,000 Homebuyer Grants in eligible areas.
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FHA Loans May Allow as Little as 3.5% Down
FHA loans may allow a down payment as low as 3.5% and may offer more flexible credit requirements. FHA loans include mortgage insurance costs. Ask an FHA-approved lender for your Loan Estimate.
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Do Not Open New Credit Before Closing
New credit can affect your credit score and debt-to-income ratio. Avoid new loans, credit cards, large purchases, or cash-out refinancing until after your mortgage has closed.
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Check Your Local Homestead Exemption Rules
Eligibility rules, deadlines, and savings vary by state and county. Visit your local property appraiser or tax assessor website to learn if you qualify.
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Get Pre-Approved Before You Shop
Pre-approval shows sellers you are serious and helps you understand your price range. It is not a guarantee of final loan approval.
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The Home Inspection Is Non-Negotiable
Inspections can reveal expensive issues. Always hire a professional inspector to evaluate the home's structure, systems, and safety.
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Build a Financial Cushion
Maintain emergency savings for repairs, maintenance, and unexpected expenses. Homeownership comes with ongoing costs beyond the monthly payment.
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Questions First-Time Buyers Ask (and Need to Know the Answers To)
What is the 28% rule and why does it matter? ▼
The 28% rule is a guideline used by many lenders. It suggests your total housing payment, including principal, interest, property taxes, and homeowners insurance, should not exceed 28% of your gross monthly income. If you earn $5,000 per month before taxes, your maximum PITI payment under this rule is $1,400. Some lenders stretch this to 31% or higher depending on your full financial picture, but 28% is the standard conservative benchmark used throughout this calculator.
What is a debt-to-income ratio and how does it affect me? ▼
Your debt-to-income ratio (DTI) is the percentage of your gross monthly income that goes toward all debt payments, including the mortgage, car loans, student loans, minimum credit card payments, and any other recurring debt. Most conventional lenders want your total DTI below 43%. FHA loans allow up to 50% in some cases. A high DTI is one of the most common reasons mortgage applications are denied. Paying down existing debt before applying can significantly improve your approval odds and interest rate.
What credit score do I need to buy a house? ▼
For a conventional loan, most lenders want a credit score of at least 620, though you will get better rates with 740 or above. For an FHA loan, you can qualify with a score as low as 580 for 3.5% down, or as low as 500 with 10% down. VA loans and USDA loans do not have official minimum scores but most lenders require at least 620. Your credit score directly affects your interest rate and total loan cost over time.
What exactly are closing costs and why are they so high? ▼
Closing costs are fees associated with processing your mortgage and transferring ownership of the property. They typically range from 2% to 5% of the loan amount and include loan origination fees, title search and title insurance, attorney or settlement fees, recording fees, prepaid interest, homeowners insurance premium, and initial escrow deposits for taxes. Your lender is required to provide a Loan Estimate within three business days of application that itemizes every fee.
What is PMI and how do I avoid it? ▼
Private mortgage insurance (PMI) is a monthly fee lenders charge when your down payment is less than 20%. It protects the lender against default. PMI typically costs 0.5% to 1.5% of the loan amount annually. You can avoid PMI by putting 20% down. Once you reach 20% equity through payments and appreciation, you can request removal. On FHA loans, the equivalent is called MIP and is structured differently, often lasting the life of the loan.
What is earnest money and do I get it back? ▼
Earnest money is a deposit you make when your offer is accepted to show the seller you are serious. It typically ranges from 1% to 3% of the purchase price and is held in escrow. If the sale goes through, it is applied toward your down payment or closing costs. If you back out for a reason covered by a contingency in your contract, you generally get it back. If you back out without a valid contingency reason, the seller can keep it.
Should I go with a 15-year or 30-year mortgage? ▼
A 15-year mortgage has a higher monthly payment but a lower interest rate and you pay off the home in half the time, saving significantly in total interest. A 30-year mortgage has a lower monthly payment and more cash flow flexibility. The right choice depends on your income stability, other financial goals, and whether the higher payment is truly comfortable for your budget long-term.
Can a single person realistically buy a home? ▼
Yes. Single homebuyers are one of the fastest growing segments in the housing market. The keys are the same as for any buyer: manage your DTI, keep your credit strong, save for the down payment and closing costs, and explore first-time buyer programs. Being a single buyer means only one income qualifies, which affects how much you can borrow, but 100% of the equity is yours. Many single buyers start with a starter home, build equity, and use that to upgrade later.
Does this calculator include PMI, HOA fees, and my other monthly debts? ▼
No. This calculator estimates affordability based on the 28% front-end ratio using your housing payment only. It does not factor in PMI, HOA fees, flood insurance, car loans, student loans, credit card minimums, or other monthly debt obligations. Your lender will look at all of these when reviewing your full application. Use this as a starting point, then speak with a licensed mortgage professional for a complete picture.
Is the home affordability result the same as a mortgage preapproval? ▼
No. This calculator provides an educational estimate based on information you enter. It is not a mortgage offer, preapproval, or guarantee of financing. Actual loan eligibility and costs depend on the lender, credit history, debt-to-income ratio, employment, income documentation, property, loan program, mortgage insurance, closing costs, and other requirements. Always work with a licensed mortgage professional before making any purchasing decisions.
What salary do I need for a $300,000, $400,000, or $500,000 house? ▼
Using the 28% guideline as a general rule, here are rough gross income estimates at a 6.75% interest rate, 30-year term, 10% down, 1.2% property tax, and $1,400 annual insurance. For a $300,000 home you would generally need approximately $70,000 to $80,000 in annual gross income. For a $400,000 home roughly $95,000 to $110,000. For a $500,000 home approximately $120,000 to $140,000. These are estimates only and do not include HOA fees, PMI, or your existing monthly debts, all of which can significantly change your actual purchasing power. Use the calculator above with your exact numbers for a personalized result. Interest rates also move frequently so results will vary based on how much house you can afford with current interest rates at the time you apply.
Should I use a conservative or stretch home budget when calculating affordability? ▼
A conservative home budget keeps your total housing payment well below 28% of gross income, ideally around 20% to 25%, leaving more room for savings, debt payoff, emergency funds, and lifestyle expenses. A stretch budget pushes closer to 28% or slightly above, maximizing the home price you can qualify for. Most financial advisors suggest starting with a conservative vs. stretch home budget comparison before committing to the top of your approval range. Just because a lender approves you for a higher amount does not mean that amount will be comfortable in your day-to-day budget. Use this calculator to see both scenarios by running it twice with different income or down payment inputs.
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Sources and Methodology
Calculate This Way created this home affordability calculator — a free house purchasing power estimator — to provide an educational estimate based on information entered by the user. The result is not a mortgage offer, preapproval, or guarantee of financing. Actual loan eligibility and costs depend on the lender, credit history, debt-to-income (DTI) ratio, employment, income documentation, property, loan program, mortgage insurance, closing costs, and other requirements. Results will vary based on current interest rates at the time of application.
Last reviewed: July 2026