This home affordability calculator estimates how much house you can afford based on your income, monthly debts, down payment, and interest rate using the standard 28/36 debt-to-income rule. To see your exact monthly payment once you pick a price, visit our Auto Loan Calculator.

How Much House Can You Actually Afford

The median home price in the United States reached $417,000 in 2024, while the median household income sat at around $80,000. At current interest rates, a household earning $80,000 per year can afford roughly $280,000 to $320,000 in home price using standard lender guidelines — a gap of nearly $100,000 from the median. That gap is exactly why so many buyers end up house-poor, stretching their budget to buy a home that looks affordable on paper but leaves no room for anything else.

Most buyers make the mistake of starting with the home search and working backward to the financing. They fall in love with a $450,000 house and then look for ways to make the numbers work. The smarter approach is to calculate your real ceiling first and only look at homes below it. This protects you from emotional decisions that turn into financial stress six months after closing.

The home affordability calculator gives you a hard number before you talk to a real estate agent or a lender. Enter your income, existing debts, down payment, and the current interest rate and you get a maximum home price based on what lenders will actually approve — not what you hope they will approve.

Income-Based Ceiling — Lenders generally limit your total housing payment to 28% of your gross monthly income. On a $90,000 annual salary that is $2,100 per month for principal, interest, taxes, and insurance combined. Knowing this number stops you from wasting time on homes outside your real range.

Debt Impact on Buying Power — Every $500 in existing monthly debt payments reduces how much house you can afford by roughly $75,000 at current rates. A buyer with $800 in monthly car and student loan payments qualifies for significantly less than an identical buyer with no debt, even with the same income.

Down Payment Effect — Putting 20% down on a $350,000 home instead of 5% saves you approximately $180 per month in mortgage payments and eliminates private mortgage insurance, which typically costs 0.5% to 1.5% of the loan amount annually — between $1,750 and $5,250 per year on that loan.

Rate Sensitivity — A 1% increase in interest rates reduces your affordable home price by roughly $30,000 to $40,000 at typical income levels. Running the calculator at today’s rate and at a rate 0.5% higher shows you how much buffer you need if rates move before you close.

Long-Term Budget Reality — Homeownership costs beyond the mortgage — maintenance, repairs, property taxes, and insurance — typically run 1% to 3% of the home’s value per year. On a $400,000 home that is $4,000 to $12,000 annually in costs that most affordability calculations never include.

Drawbacks of Affordability Calculations

The biggest problem with any affordability calculator is that it tells you the maximum you can borrow — not the maximum you should borrow. Lenders approve loans based on income and debt ratios, not on your actual lifestyle costs. If you spend $800 per month on groceries, $400 on childcare, and $600 on car costs, your real comfortable payment ceiling may be $500 less per month than what a lender will approve. Buying at the top of your approved range is one of the most common causes of financial stress among new homeowners.

Affordability calculators also cannot predict future changes in your financial situation. A job loss, a medical emergency, or a new child can change your monthly cash flow dramatically. According to Federal Reserve data, roughly 1 in 8 homeowners reports difficulty making mortgage payments at some point in the first five years of ownership. Building a buffer of 10% to 15% below your maximum affordable price gives you room to absorb life changes without missing payments.

Property taxes and homeowner’s insurance vary enormously by location and are often underestimated. In high-tax states like New Jersey or Illinois, property taxes alone can add $1,000 or more per month to your true housing cost on a median-priced home. The calculator uses estimates for these costs — your actual numbers could be higher. For a precise monthly payment based on a specific home price, visit the Mortgage Calculator.

Debt-to-Income Ratio Method

The home affordability calculator uses the 28/36 debt-to-income rule, which is the standard guideline used by most conventional lenders. The front-end ratio limits your total housing payment — principal, interest, property taxes, and homeowner’s insurance — to 28% of your gross monthly income. The back-end ratio limits your total monthly debt — housing plus all other recurring obligations like car loans, student loans, and credit cards — to 36% of gross monthly income. The calculator takes your inputs, applies both limits, and returns the lower of the two results as your maximum affordable home price. It assumes a fixed interest rate, a 30-year loan term, and standard estimates for taxes and insurance unless you override them.

Conservative 25% Income Rule

Some financial planners recommend a stricter approach — keeping your total housing payment below 25% of your gross monthly income rather than the lender’s 28% limit. On a $90,000 annual salary, this drops the maximum monthly payment from $2,100 to $1,875. Over 30 years, that $225 monthly difference represents significant breathing room in your budget for retirement savings, emergencies, and life expenses.

The 28/36 rule suits buyers who have stable employment, minimal other debt, and a fully funded emergency fund going into the purchase. The 25% rule suits buyers who are self-employed, have variable income, carry student loans or car payments, or simply want more financial flexibility after buying. The calculator uses the 28/36 standard because that is what lenders actually use — but running your numbers at 25% gives you a conservative target worth knowing.

Tips for Using the Home Affordability Calculator

Run the calculator before you contact any real estate agent — Agents are incentivized to show you homes at the top of your range. Knowing your real ceiling before the first conversation prevents you from being shown homes that stretch your budget from day one.

Include your actual property tax rate, not the default estimate — Property tax rates vary from under 0.5% in some states to over 2% in others. Look up the rate for the specific county you are buying in and enter it manually. The difference can change your affordable home price by $30,000 or more.

Test your affordability at an interest rate 1% higher than today — Rates can change between your first search and your closing date. If the higher rate drops your affordable price below $300,000, you should be shopping below $300,000 regardless of today’s rate.

Subtract three months of mortgage payments from your down payment before entering it — Most financial advisors recommend keeping three to six months of housing costs in reserve after closing. If you have $60,000 saved and your monthly payment will be $2,000, enter $54,000 as your down payment to account for the minimum reserve you should keep.

Check your result against the 25% rule manually — Multiply your gross monthly income by 0.25 and compare that number to the monthly payment the calculator generates at your maximum price. If the payment exceeds 25% of your income, consider targeting a price $20,000 to $40,000 below the calculator’s ceiling.

Dealing with Falling Short of Your Target Home Price

Reduce existing monthly debt before applying — Paying off a $300 per month car payment before you apply can increase your affordable home price by $40,000 to $50,000 under the 36% back-end rule. If you have 12 months before you plan to buy, use that time to eliminate high-payment debts first rather than saving more for a down payment.

Add a co-borrower to the application — Adding a spouse, partner, or family member with income to the loan increases the gross income the lender uses to calculate your limit. A household with two incomes of $50,000 each qualifies for a significantly larger loan than a single borrower earning $100,000 in most lending scenarios because the second income also often comes with lower individual debt obligations.

Look at first-time buyer programs in your state — Most states offer down payment assistance programs that provide 3% to 5% of the purchase price as a grant or low-interest second loan. On a $350,000 home, a 4% assistance grant covers $14,000 of your down payment requirement and preserves your cash reserves. These programs have income limits but many apply up to $120,000 in household income.

Target a lower price range and build equity for two years — Buying a home $50,000 below your maximum and selling after two to three years of appreciation can generate enough equity to move up to your target price range without a larger income. Use the Mortgage Calculator to model the monthly payment at your conservative price and confirm it fits your actual monthly budget before committing.

Related: Mortgage Calculator | Refinance Calculator