Debt-to-Income (DTI) Calculator

What Is Debt-to-Income Ratio?

DTI is the percentage of your gross monthly income that goes toward debt payments. Lenders use DTI to assess your ability to manage monthly payments and repay the mortgage. A lower DTI means more income available for the housing payment and less risk for the lender.

DTI Limits by Loan Type

• Conventional loans: Typically up to 43–45% back-end DTI; some lenders allow 50% with strong compensating factors
• FHA loans: Up to 43% standard; may allow up to 50% with compensating factors (strong credit, reserves)
• VA loans: No hard DTI cap, but 41% is the benchmark; residual income requirement also applies
• USDA loans: Typically up to 41% back-end DTI

How to Improve Your DTI

Pay down existing debts (especially installment loans and credit cards), avoid taking on new debt before applying, or increase your income. Paying off a car loan before applying, for example, can lower your back-end DTI by several percentage points and meaningfully change your loan options.

Practical Ways to Improve Your DTI Before You Apply

Because DTI is based on minimum monthly payments rather than total balances, paying off a smaller loan or credit card completely often helps more than making a large extra payment on a bigger balance that still leaves a monthly payment in place. Eliminating a $200 per month car payment, for example, removes that entire amount from your back-end DTI calculation, while a partial paydown on a larger balance may only lower the minimum payment slightly.

Timing matters too. Most lenders pull your credit report close to when you apply, so paying down a balance a few weeks before you apply, and making sure the updated balance has been reported by the creditor, gives the improvement time to show up before your DTI is calculated.

It also helps to avoid opening new credit accounts, financing a car, or taking on new debt in the months leading up to a mortgage application, even if the payments seem small. New monthly obligations count against your back-end DTI immediately and can offset progress you have made paying down other debts.

If your DTI is close to a loan program’s limit, ask a loan officer whether a co-borrower’s income can be added to the application, since combining incomes lowers the DTI ratio calculated against the same debts. Different loan programs also weigh compensating factors, such as strong credit or cash reserves, differently, so a program that looked out of reach at first glance may still be workable.

Finally, remember that this calculator only includes debts that show up on your credit report and your proposed housing payment. It does not include everyday expenses like utilities, groceries, or subscriptions, which lenders generally do not factor into DTI even though they affect your actual monthly budget.