Debt Ratios for Home Financing

The debt to income ratio is a tool lenders use to determine how much money is available for your monthly home loan payment after all your other monthly debts have been fulfilled.

Understanding your qualifying ratio

For the most part, underwriting for conventional mortgage loans requires a qualifying ratio of 28/36. FHA loans are a little less restrictive, requiring a 29/41 ratio.

In these ratios, the first number is the percentage of your gross monthly income that can go toward housing costs. This ratio is figured on your total payment, including homeowners' insurance, homeowners' dues, Private Mortgage Insurance - everything that constitutes the full payment.

The second number 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/boat loans, child support, etcetera.

For example:

28/36 (Conventional)

  • Gross monthly income of $3,500 x .28 = $980 can be applied to housing
  • Gross monthly income of $3,500 x .36 = $1,260 can be applied to recurring debt plus housing expenses

With a 29/41 (FHA) qualifying ratio

  • Gross monthly income of $3,500 x .29 = $1,015 can be applied to housing
  • Gross monthly income of $3,500 x .41 = $1,435 can be applied to recurring debt plus housing expenses

If you'd like to calculate pre-qualification numbers on your own income and expenses, we offer a Mortgage Pre-Qualifying Calculator.

Guidelines Only

Remember these are just guidelines. We'd be thrilled to help you pre-qualify to help you determine how large a mortgage loan you can afford.

Harbor View Lending* a DBA of Megastar Financial can answer questions about these ratios and many others. Give us a call: (207) 571-8034.