Debt-to-Income Ratio Calculator

Debt-to-income ratio is calculated by dividing your total monthly debt payments by your gross monthly income and multiplying by 100 to express it as a percentage. Gross income is your income before taxes and deductions. Monthly debt payments include all recurring obligations: mortgage or rent, car payments, credit card minimums, student loan payments, personal loan payments, and any other fixed monthly debt obligation. Income includes wages, salary, self-employment income, rental income, Social Security, and other regular income sources.

For a conventional mortgage, most lenders require a back-end DTI at or below 43%, though some lenders cap it at 36% for the best rates. FHA loans allow DTI up to 57% in some circumstances with compensating factors like strong credit or large down payment reserves. VA loans have no set DTI maximum but most VA lenders prefer DTI below 41%. Jumbo loan requirements are stricter, with most lenders requiring DTI below 43% and many preferring below 38%.

Rent counts in your DTI if you are currently renting. It appears as a housing payment in the front-end calculation. When you apply for a mortgage, the lender replaces your rent payment with the projected mortgage payment (plus taxes and insurance) to calculate what your DTI will be after the home purchase. If your projected mortgage payment is higher than your current rent, your DTI will increase. This is one reason a significant rent increase — such as moving from renting to buying a much more expensive home — can push your DTI into a range that makes approval difficult.

Lenders count all verifiable, consistent income. This includes W-2 wages and salary, self-employment income (typically averaged over two years using tax returns), rental income (typically 75% of gross rent after vacancy allowance), Social Security and pension income, child support and alimony received (if likely to continue for three or more years), and regular investment or retirement distributions. Part-time income counts if you have a two-year history of it. Bonuses and overtime count if they have been consistent for at least two years.

Getting approved for new loans with a 50% DTI is difficult but not impossible. FHA loans are the primary option for home purchases at this level. Some personal loan lenders work with high-DTI borrowers but charge higher rates. Credit card approval becomes unlikely. Auto loans may still be available but at penalty rates. A 50% DTI signals that half your income is committed to debt before any living expenses. The most effective path is to reduce DTI before applying for new credit. Use the debt payoff calculator to create a plan that eliminates debt obligations and reduces your ratio.

DTI is one of several factors that influence the interest rate you are offered. It is not as direct as your credit score, but lenders use it as a risk indicator. A borrower with a 30% DTI may qualify for the lender's best rate tier. The same borrower with a 45% DTI may be placed in a higher risk tier with a rate 0.25% to 0.75% higher. On a $300,000 mortgage, a 0.5% rate difference adds approximately $88 per month and $31,680 over a 30-year loan. Improving DTI before applying for a mortgage can directly reduce your interest cost.

Front-end DTI includes only your housing costs divided by gross income. This covers mortgage principal and interest, property taxes, homeowners insurance, and HOA fees. Most lenders want front-end DTI below 28%. Back-end DTI includes all your monthly debt payments — housing costs plus car loans, student loans, credit cards, and any other recurring debt obligations — divided by gross income. This is the number most commonly called your DTI. Most conventional lenders cap back-end DTI at 43% for approval.