Debt-to-income

Debt-to-Income Ratio Calculator

Work out your front-end and back-end debt-to-income ratios the way an underwriter does, and see how much monthly debt you could add or need to clear.

Back-end ratio38.9%Inside the 43% limit.
Front-end ratio
31.1%Housing payment alone.
Monthly debt you could add
$370

How the math works

  1. 1

    Front-end ratio

    Divide the full housing payment by gross monthly income.

  2. 2

    Back-end ratio

    Add other monthly debt payments to the housing payment, then divide by gross monthly income. This is the ratio lenders apply their limit to.

  3. 3

    Room or shortfall

    Multiply income by the limit and subtract all payments. Positive means room to spare; negative is debt to pay down or housing cost to trim.

Worked example with the starting figures above: back-end ratio 38.9%; front-end ratio 31.1%; monthly debt you could add $370. Rates are illustrative examples, not a quote.

Debt-to-Income Calculator questions

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