Create an account

Calculators

Home Affordability Calculator

See the most house you qualify for from your income, debts and down payment, using the debt-to-income limits lenders apply. The calculator shows the maximum price and the monthly payment at each limit. It does not predict whether a lender approves you.

Four numbers set your price limit. Income, rate, debts and down payment each change what you qualify for, and some move the answer more than you expect.

Take a hypothetical household earning $150,000 with $500 in monthly debts and $80,000 down. At a 7.18% rate and the 36% standard limit, the maximum price is $541,074 and the payment is $4,000 a month. One point lower on the rate adds $40,583 to the price. One point higher takes away $35,782.

Monthly debts matter as much as the rate. Clearing $500 a month in debts adds $61,043. Taking on $400 more takes away $48,834. An extra $20,000 down adds $17,762.

Enter your own numbers below to see the maximum price at each lender limit and where your payment goes. The calculator does not predict a lender’s decision, so confirm your numbers with a lender before you make an offer.

Your finances

$
$

Car, student loan and credit card minimums. Leave out rent and the new mortgage.

$

Your loan

Loan type
%

Prefilled with the Freddie Mac weekly average for a 30-year fixed loan, 7.18 percent on November 5, 2026. The 15-year average was 6.57 percent. Use your lender’s quote.

Monthly costs of owning

%
$

Required. Property tax is a share of the home price each year. Ask your county assessor or a local agent for both numbers. This calculator does not guess them.

$
%

Conventional loans with less than 20 percent down carry private mortgage insurance. Ask your lender for the annual rate. It ends when your balance reaches 78 percent of the original value.

What you qualify for

Limit appliedMaximum priceLoanMonthly payment

Where your monthly payment goes

    What the interest rate does to your price

    How lenders set your limit

    Lenders add your new housing payment to your other monthly debts and divide by your gross monthly income. The result is your debt-to-income ratio. Each loan program sets a ceiling on that ratio. A lower rate, a larger down payment or fewer debts each raise the price you qualify for.

    • Conventional. Fannie Mae allows a 36 percent total ratio for manually underwritten loans, up to 45 percent with credit score and reserves, and 50 percent through its automated system.
    • FHA. HUD sets 31 percent for housing and 43 percent total as the standard. With one compensating factor the limits are 37 and 47 percent. With two, they are 40 and 50 percent. Borrowers with a score from 500 to 579 stay at 31 and 43 percent.
    • FHA down payment. At least 3.5 percent with a score of 580 or above, and at least 10 percent from 500 to 579.
    • FHA mortgage insurance. A 1.75 percent upfront premium added to your loan, plus an annual premium of 0.50 to 0.75 percent on loans over 15 years, set by loan size and down payment.
    See how a home purchase fits your retirement plan

    How this is calculated

    The calculator finds the highest price where your housing payment plus other debts stays at or under the limit. Your housing payment is principal and interest, property tax, insurance, HOA dues and mortgage insurance. Principal and interest use the standard fixed-rate formula. FHA premiums follow HUD’s published method, which charges the annual premium on the average balance of the first year.

    • Conventional mortgage insurance applies while the loan is above 80 percent of the price. The calculator uses the first-year amount.
    • FHA loan limits vary by county, and the conventional conforming limit is $832,750 in 2026. Prices needing a larger loan fall under different rules. Check your county’s limit.
    • Lenders also review credit history, savings and job history. Reserves and compensating factors change the limit they allow.
    • Closing costs, moving costs and repairs are not included.

    Sources

    Hypothetical results. Results are hypothetical in nature, do not reflect an offer of credit and are not a loan approval or guarantee. Lender rules, rates and your credit profile change the outcome. This calculator is educational software from PureLogicOS. It does not provide individualized investment, tax, legal or accounting advice. Have your CPA or another qualified professional check these values before you act on them.