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.
Front-end ratio 25.0%, back-end ratio 33.3%. Lenders consider this healthy.
Worked examples
Real results from this calculator, computed for a few common scenarios. Move the sliders above to run your own numbers.
| Gross monthly income = $8,800 | Front-end ratio 17.0%, back-end ratio 22.7%. Lenders consider this healthy. |
| Gross monthly income = $20,500 | Front-end ratio 7.3%, back-end ratio 9.8%. Lenders consider this healthy. |
| Gross monthly income = $32,200 | Front-end ratio 4.7%, back-end ratio 6.2%. Lenders consider this healthy. |
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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.
Put this calculator on your website
Bloggers, teachers, credit unions, HR teams: embed the live Debt-to-Income Ratio Calculator free. Copy the snippet below — the tool keeps working and stays up to date automatically, no maintenance on your side.
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