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Debt-to-Income Ratio Calculator

Enter your gross monthly income, housing payment, and other monthly debt payments. The tool returns your housing ratio, your total debt-to-income ratio, and the band lenders usually apply.

By the AutoLoanable Editorial Team · Last updated 2026-09-17

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Enter your numbers and press Calculate. Nothing you type leaves your browser.

How this calculator works

Lenders compare your monthly debt payments with your gross monthly income. The housing ratio counts only housing; the total debt-to-income ratio adds every other debt payment.

housing ratio = housing ÷ income × 100, and total DTI = (housing + other debts) ÷ income × 100

  • income — gross monthly income before tax
  • housing — your monthly rent or mortgage payment
  • other debts — minimum payments on cards, loans, and other debts

A total DTI below 36% is comfortable for most lenders, 36% to 43% is acceptable to many, 43% to 50% is tight, and above 50% most lenders decline. Lenders set their own limits, so treat the band as a guide.

What changes your result

Only a few inputs move the number materially. In rough order of impact:

Sensitivity of the monthly payment
InputEffect on the paymentEffect on total cost
Amount financedDirectly proportionalDirectly proportional
Interest rate / APRDirectly proportionalDirectly proportional
Term (months)Lower payment when longerHigher total interest when longer
Down paymentLowers the paymentLowers total interest
Trade-in equityLowers the amount financedLowers total interest
Sales tax and feesRaises the amount financedRaises total cost

Enter the rate you were actually offered. This site is not a lender and does not publish rates — a quoted rate is only meaningful next to the term and the amount financed.

Frequently asked questions

What counts as debt in the ratio?
Count the minimum payments on credit cards, personal loans, student loans, and any other debt, plus your housing payment. Use gross income before tax.
What debt-to-income ratio do lenders want?
Many lenders look for a total DTI at or below 43%, and some prefer under 36%. The band in the tool reflects those common ranges, but each lender sets its own limit.
Does a car payment count in my DTI?
Yes. Once you take out the car loan, the payment becomes part of your monthly debts and raises your total DTI. The affordability calculator works out the payment that fits a target.
Why is my ratio undefined?
If gross monthly income is zero, the ratio cannot be calculated. Enter a positive income to see the housing ratio and total DTI.

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