Debt-to-Income Ratio Calculator
Income (Before Tax)
Housing Costs
Other Monthly Debts
Your debt-to-income ratio (DTI) is the share of your gross income that goes to debt payments each month, written as a percentage. If you earn $5,000 a month before tax and your rent, card minimums and car payment add up to $1,650, your DTI is 33%. With no debt at all, it is 0%. Lenders compute this number on nearly every loan application — mortgages, auto loans, personal loans, even many credit cards — because it answers their core question: after your existing obligations, is there room in your income to repay one more?
Do not confuse DTI with credit utilization, the share of your credit-card limits you are using. Utilization is computed from your credit reports and affects your credit score. DTI is computed from your income, which bureaus never see — so DTI itself never appears on a credit report, yet it still decides approvals every day.
The front-end ratio counts housing only: rent or mortgage principal and interest, plus property tax, homeowner insurance, and HOA dues, divided by gross monthly income. Conventional mortgage lenders cap it at 28%. The back-end ratio adds everything else — car loans, student loans, credit-card minimums, child support, personal loans. It is the number people usually mean by “DTI,” and the conventional cap is 36%. Government programs are looser: FHA allows 31% front-end and 43% back-end, while VA loans use a single 41% back-end limit. This calculator reports both ratios and checks them against all three programs.
Lenders count required monthly payments on money you owe: housing costs, installment loans, and the minimum payments on revolving accounts like credit cards (not the full balance, and not what you usually pay). Everyday bills that are not debts — utilities, groceries, insurance premiums for your car, subscriptions, taxes you pay directly — are normally excluded, even though they obviously matter to your real budget. Keep that gap in mind: a “good” DTI can still feel tight if your non-debt spending is high.
These are guidelines, not walls: a borrower with a high income, a long stable job history, and large cash reserves can be approved above them, because what remains after debts (residual income) is what actually pays the bills.
The ratio has only two moving parts, so every strategy works one of them. Raise the denominator: overtime, a raise, a second income stream, or documenting income you already have (rental, alimony, side work) all lift gross income. Shrink the numerator: pay down the debts whose payments are largest relative to their balance — clearing a $250/month car loan removes that whole $250 from your DTI the month it ends, whatever the balance was. Refinancing or consolidating high-interest balances into a lower payment helps too, as long as it does not tempt new spending; our loan calculator can model the new payment. Avoid opening fresh credit right before a mortgage application, since the new minimum payment counts against you immediately. When your DTI is where you want it, see what it buys with the house affordability calculator.
A back-end DTI of 36% or less is considered healthy by most lenders, and 20% or less is excellent. FHA loans allow up to 43%. Above 50%, half your gross income goes to debt, which most lenders treat as too risky.
Conventional loans typically cap the front-end ratio at 28% and back-end at 36%. FHA allows 31/43, and VA uses a 41% back-end limit only. Strong credit and reserves sometimes stretch these caps.
Not directly — credit bureaus do not know your income, so DTI is not in your report or score. It still decides loan approvals. Credit utilization, a different ratio, does affect your score.
Disclaimer: This calculator provides estimates for educational purposes only. Lender DTI definitions and limits vary by program and institution, and some include or exclude specific obligations. Confirm the exact calculation with your lender before applying.