Ratio of Debt to Income

Lenders use a ratio called "debt to income" to decide your maximum monthly payment after you've paid your other recurring loans.

How to figure your qualifying ratio

For the most part, underwriting for conventional mortgages requires a qualifying ratio of 28/36. An FHA loan will usually allow for a higher debt load, reflected in a higher (29/41) qualifying ratio.

In these ratios, the first number is how much (by percent) of your gross monthly income that can be spent on housing costs. This ratio is figured on your total payment, including hazard insurance, homeowners' dues, PMI - everything.

The second number in the ratio is the maximum percentage of your gross monthly income that can be spent on housing expenses and recurring debt. For purposes of this ratio, debt includes payments on credit cards, auto payments, child support, etcetera.

For example:

With a 28/36 ratio

  • Gross monthly income of $4,500 x .28 = $1,260 can be applied to housing
  • Gross monthly income of $4,500 x .36 = $1,620 can be applied to recurring debt plus housing expenses

With a 29/41 (FHA) qualifying ratio

  • Gross monthly income of $4,500 x .29 = $1,305 can be applied to housing
  • Gross monthly income of $4,500 x .41 = $1,845 can be applied to recurring debt plus housing expenses

If you'd like to calculate pre-qualification numbers with your own financial data, feel free to use our Mortgage Loan Qualifying Calculator.

Guidelines Only

Remember these are just guidelines. We will be thrilled to help you pre-qualify to help you determine how much you can afford.

Firelight Mortgage Consultants can answer questions about these ratios and many others. Call us at 3032282254.

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Firelight Mortgage Consultants

Company NMLS#: 381658

7887 East Belleview Ave Ste 1100
Englewood, CO 80111