Debt-to-Income Ratio Calculator
Find your DTI ratio and see how lenders are likely to view your loan application.
How debt-to-income ratio is calculated
Your debt-to-income ratio, or DTI, is calculated by dividing your total monthly debt payments — rent or mortgage, car loans, student loans, credit cards, and any other recurring debt — by your gross monthly income before taxes, then expressing that as a percentage. It's one of the most important numbers lenders look at when deciding whether to approve you for a mortgage, auto loan, or other financing, because it shows how much of your income is already committed to debt obligations.
What counts as debt in a DTI calculation?
Lenders typically include recurring, fixed obligations like mortgage or rent, auto loans, student loans, minimum credit card payments, personal loans, and child support or alimony. They generally do not include everyday living expenses like groceries, utilities, or insurance premiums, since DTI is meant to measure contractual debt commitments rather than general cost of living.
Why DTI thresholds matter for mortgage approval
Most conventional mortgage lenders prefer a DTI under 36%, though many programs allow up to 43-50% depending on compensating factors like a strong credit score or large down payment. A lower DTI not only improves your approval odds but often qualifies you for better interest rates, since it signals to lenders that you have more room in your budget to comfortably handle a new payment.
Frequently Asked Questions
What is a good debt-to-income ratio?
Generally, a DTI under 36% is considered excellent and well-qualified for most loans. Between 36-43% is still good for most mortgages, 43-50% is borderline and may require compensating factors, and above 50% is considered high risk by most lenders.
What counts as debt in a DTI calculation?
Lenders typically count recurring fixed obligations: rent or mortgage, car loans, student loans, minimum credit card payments, personal loans, and child support or alimony. Everyday expenses like groceries, utilities, and insurance are generally not included.
Is DTI based on gross or net income?
DTI is calculated using your gross monthly income — your earnings before taxes and other deductions — not your take-home pay. This is standard practice across mortgage and most other loan underwriting.
What DTI do I need to qualify for a mortgage?
Conventional loans typically prefer a DTI at or below 43-45%, while some government-backed programs like FHA loans may allow higher ratios, up to around 50%, especially with strong compensating factors like a high credit score or significant cash reserves.
How can I lower my debt-to-income ratio?
You can lower your DTI by paying down existing debt balances, avoiding new debt before applying for a loan, or increasing your income. Even paying off a single credit card or small loan can meaningfully improve your ratio.
What is the difference between front-end and back-end DTI?
Front-end DTI only considers housing costs (rent or mortgage, taxes, insurance) as a percentage of income, while back-end DTI — the number most lenders emphasize and what this calculator estimates — includes all monthly debt obligations, not just housing.
Does my DTI ratio affect my interest rate?
Yes, in many cases. A lower DTI signals less risk to lenders, which can help you qualify for better interest rates and loan terms, while a higher DTI may result in a higher rate or additional conditions even if you're still approved.
Does DTI include potential new loan payments?
When applying for a new mortgage or loan, lenders calculate your DTI including the new estimated payment, not just your existing debts. This calculator shows your current DTI based on existing debts — add a new loan payment to the debt fields to see how a new obligation would affect your ratio.