Debt Ratios for Home Lending

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

How to figure your qualifying ratio

In general, conventional mortgage loans require a qualifying ratio of 28/36. FHA loans are a little less restrictive, requiring a 29/41 ratio.

The first number in a qualifying ratio is the maximum amount (as a percentage) of gross monthly income that can be spent on housing (including mortgage principal and interest, private mortgage insurance, homeowner's insurance, taxes, and homeowners' association dues).

The second number is the maximum percentage of your gross monthly income that can be applied to housing expenses and recurring debt together. Recurring debt includes credit card payments, vehicle loans, child support, etcetera.

Some example data:

With a 28/36 ratio

  • Gross monthly income of $2,700 x .28 = $756 can be applied to housing
  • Gross monthly income of $2,700 x .36 = $972 can be applied to recurring debt plus housing expenses

With a 29/41 (FHA) qualifying ratio

  • Gross monthly income of $2,700 x .29 = $783 can be applied to housing
  • Gross monthly income of $2,700 x .41 = $1,107 can be applied to recurring debt plus housing expenses

If you want to calculate pre-qualification numbers with your own financial data, we offer a Mortgage Loan Pre-Qualification Calculator.

Guidelines Only

Remember these are just guidelines. We will be happy to pre-qualify you to determine how large a mortgage you can afford.

Alternative Mortgage Group can walk you through the pitfalls of getting a mortgage. Call us at 561-395-4264.


Alternative Mortgage Group

80 SW 14 Ave
Boca Raton, FL 33486