Debt-to-Income Ratio Calculator
Enter your gross monthly income and monthly debt payments to see your front-end and back-end DTI ratios with a lender-style rating.
Example
With $6,000 gross monthly income, a $1,500 housing payment, $400 auto loan, $200 credit card minimums, and $250 student loans:
- Front-end DTI = 1,500 ÷ 6,000 × 100 = 25.0%
- Total monthly debt = 1,500 + 400 + 200 + 250 = $2,350
- Back-end DTI = 2,350 ÷ 6,000 × 100 = 39.2% (Acceptable)
How it works
Front-end DTI = housing payment / gross monthly income, and back-end DTI = all monthly debt payments / gross monthly income, each shown as a percentage. Lower ratios mean more borrowing room; lenders generally prefer back-end DTI at or below 36%.
Good to know
This Debt-to-Income Ratio Calculator turns your gross monthly income and recurring debt payments into two percentages lenders actually use: a front-end ratio (housing only) and a back-end ratio (every debt combined). It is built for anyone sizing up a mortgage, refinance, or large loan application who wants to see roughly how an underwriter will view their file before they apply or get a credit pull.
Reach for it when you are house-hunting, deciding whether to pay down a card or auto loan first, or trying to understand why a pre-approval came back smaller than expected. Enter your income, your housing payment, and each debt category separately so you can watch how a single balance moves the back-end number and shifts your rating between Excellent, Acceptable, High, and Risky.
Read the result by focusing on the back-end ratio, since that is the figure most lenders weight heaviest. The front-end bar shows how much of the ratio is housing versus other obligations: a low front-end with a high back-end signals that consumer debt, not your mortgage, is the constraint, which tells you exactly what to attack first.
One practical caveat: the calculator uses the monthly payment amounts you type, not your total balances, so a $20,000 loan with a $250 payment only counts as $250. Use the minimum required payment for credit cards (not what you actually pay) and use gross, pre-tax income, because that is what lenders plug into the same formula.
Frequently asked questions
What is the difference between front-end and back-end DTI?
Front-end DTI counts only your housing payment (mortgage or rent plus taxes and insurance) against gross income. Back-end DTI adds all other recurring debts such as car loans, credit cards, and student loans, so it is always equal to or higher than the front-end ratio.
What DTI do lenders want for a mortgage?
Most conventional lenders prefer a back-end DTI of 36% or less, and many cap qualified mortgages at 43%. Some programs (FHA, or loans with strong credit and reserves) allow up to about 50%. Lower is always better and improves your odds and rate.
Is my data uploaded anywhere?
No — this calculator runs entirely in your browser; nothing is uploaded.
Is this financial advice?
No. These are educational estimates — consult a qualified financial professional before making decisions.
People also ask
How do I calculate my debt-to-income ratio by hand?
Add up all your required monthly debt payments, divide that total by your gross monthly income, and multiply by 100. For example, $2,000 in debt against $6,000 income is 2,000 ÷ 6,000 × 100 = 33.3%.
Does rent count in your debt-to-income ratio?
Yes. For renters, the monthly rent is treated as the housing payment and counts in both the front-end and back-end ratios, the same way a mortgage payment would for a homeowner.
What bills are not included in a DTI calculation?
DTI generally excludes living expenses like utilities, groceries, insurance premiums (other than those bundled into a mortgage payment), phone bills, and subscriptions. It typically counts only debt obligations such as mortgage or rent, auto loans, student loans, credit card minimums, and personal loans.
Should I use gross or net income for DTI?
Lenders use gross (pre-tax) income for DTI, so this calculator does too. Using your net take-home pay would overstate your ratio and not match how an underwriter evaluates you.
How can I lower my debt-to-income ratio quickly?
The two levers are reducing monthly debt payments (paying off or paying down loans, especially small balances that carry a payment) and increasing qualifying income. Avoiding new loans or large credit card balances before applying also helps keep the ratio from rising.
Does debt-to-income ratio affect my credit score?
No. DTI is not a factor in credit scores because scoring models do not have your income. However, credit utilization (balances versus limits) does affect your score, and lenders look at both DTI and your score separately when reviewing an application.
Is a 20% debt-to-income ratio good?
A back-end DTI around 20% is generally considered strong and well below the 36% threshold most lenders prefer. It indicates a relatively low share of income is committed to debt, which typically leaves more borrowing room.
Related calculators