Published:
August 4, 2015
Last updated:
February 23, 2026
Assessing Your ‘Debt-to-Income Ratio’: Why This Number Matters
In This Article

If you are looking to buy a home, you may want to consider shopping for a loan first. Having your financing squared away ahead of time can make it easier to be taken seriously by buyers and help move along the closing process. For those who are looking to get a mortgage soon, keep in mind that the Debt-to-Income ratio of the borrower plays a huge role in the approval of your mortgage application.

What is a Debt-to-Income Ratio?

A debt-to-income ratio is the percentage of monthly debt payments compared to the amount of gross income that a person earns each month. Your gross monthly income is typically the amount of money you earn before taxes and other deductions are taken out.

If a person’s monthly gross income is $2,000 a month and they have monthly debt payments of $1000 each month, that person would have a DTI of 50 percent. The lower the DTI the better. In most cases, 43 percent is the highest DTI that potential borrowers can have and still get approved for a mortgage.

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What Debt Do Lenders Look At?

The good news for borrowers is that lenders will disregard some debt when calculating a borrower’s DTI. For example, utilities, cable, phone and health insurance premium would not be considered as part of your DTI. What lenders will look at are any installment loan obligations such as auto loans or student loans as well as any revolving debt payments such as credit cards or a home equity line of credit. In some cases, a lender will disregard an installment loan debt if the loan is projected to be paid off in the next 10-12 months.

What Is Considered Income?

Almost any source of income that can be verified will be counted as income on a mortgage application. Wage income is considered as part of a borrower’s monthly qualifying income. Self-employed individuals can use their net profit as income when applying for a mortgage, however, many lenders will average income in the current year with income from previous years.

In addition, those who receive alimony, investment income or money from a pension or social security should make sure and include those figures in their monthly income as well when applying for a loan.

How Much Debt Is Too Much Debt?

Many lenders prefer to only offer loans to those who have a debt-to-income ratio of 43 percent or lower. Talking to a lender prior to starting the mortgage application process may help a borrower determine if his or her chosen lender offers such leeway.

A borrower’s DTI ratio can be the biggest factor when a lender decides whether to approve a mortgage application. Those who wish to increase their odds of loan approval may decide to lower their DTI by either increasing their income or lowering their debt. This may make it easier for the lender and the underwriter to justify making a loan to the borrower.

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Have Questions About Mortgages?

Are you considering buying a home sometime soon? Sammamish Mortgage can help. We are a local mortgage company serving the broader Pacific Northwest region, including Washington state, Idaho, Colorado, Oregon, and California. We are proud to offer a wide variety of mortgage programs and products with flexible qualification criteria, including our 15-year fixed-rate mortgages, 30-year fixed-rate mortgages, and adjustable-rate mortgages (ARMs), among others. Visit our website to get an instant rate quote or to use our online mortgage calculator. Please contact us if you have any questions or are ready to get pre-approved for a mortgage.