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Money Tools › Debt-to-Income Ratio Calculator
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Debt-to-Income Ratio Calculator

This tool shows the debt-to-income ratios that lenders rely on when they size up a loan application. It compares your monthly debt payments against your gross monthly income to produce two figures: a housing-only ratio and a total-debt ratio. Move the sliders to see how income, your housing payment, and other debts push these ratios up or down.

How this math works

The calculator builds two ratios from your numbers. The front-end ratio divides your housing payment by your gross monthly income, showing how much of your pay goes to housing alone. The back-end ratio divides your housing payment plus all other debt payments by the same income, capturing your total debt load as a share of what you earn.

Lenders lean on the back-end ratio most. Many prefer it at or under thirty six percent, and forty three percent is a common ceiling for many qualified mortgages. Because the ratios use gross income, your take-home pay is lower, so leaving room below these limits gives your real budget breathing space.

Common questions

What is a good debt-to-income ratio?

Many lenders like to see a total, or back-end, ratio at or under thirty six percent, and forty three percent is a frequent upper limit for many mortgages. Lower is better, since it signals more room in your budget and less risk to a lender.

What is the difference between front-end and back-end?

The front-end ratio counts only your housing payment against your income, while the back-end ratio adds in all your other monthly debt payments. Lenders look at both, but the back-end ratio usually carries more weight because it reflects your full obligations.

Does this use gross or net income?

It uses gross monthly income, meaning your pay before taxes and deductions, because that is the standard lenders use. Keep in mind your take-home pay is smaller, so a ratio that looks acceptable to a lender can still feel tight in practice.

Just so you know: DollarFlourish is an educational publisher, not a financial, tax, or investment advisor. Numbers and rates change. Verify anything important with a licensed professional before acting on it. Some links on this site may earn us a commission at no cost to you. See how we review.

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