Debt-to-Income (DTI) Ratio Calculator

Check how your monthly debt payments compare to your income — broken into front-end (housing) and back-end (total) ratios, the same figures lenders use.

Incomes (Before Tax)
House Debts / Expenses
Other Debts / Expenses

Front-end vs. back-end: two different questions

The front-end ratio asks a narrow question — can you afford the roof over your head? It only counts housing: rent or mortgage, property tax, HOA fees, and homeowner's insurance, divided by gross income. The back-end ratio asks the bigger question a lender actually cares about: once every recurring obligation is added in — credit cards, student loans, car payments — how much of your income is already spoken for? A healthy front-end ratio with a bloated back-end ratio usually means non-housing debt, not the house itself, is the real constraint.

Why "before tax" matters

DTI is always measured against gross income, not what actually lands in your bank account after taxes and withholdings. That can feel misleading — your real spending power is lower than the number lenders use — but it's the standard every lender applies consistently, so it's the number worth tracking even if it overstates how much room your budget truly has.

A "good" DTI isn't a hard rule — it's a risk signal. Two people with identical ratios can have very different financial stability depending on income size, job security, and savings, which is why lenders weigh DTI alongside credit score and cash reserves rather than in isolation.

Common questions

What's a good DTI ratio to aim for?

Generally, under 36% back-end is considered healthy by conventional lending standards. Between 36% and 50% is workable but leaves less room to qualify for the best rates; above 50% starts to meaningfully limit borrowing options.

Does DTI affect my credit score?

Not directly — DTI isn't a factor in credit scoring models. It's a separate metric lenders calculate themselves when deciding whether to approve a loan and on what terms.

How is this different from credit utilization?

Credit utilization compares your credit card balances to your credit limits and does affect your credit score. DTI compares your actual monthly debt payments to your income and doesn't — they're related but separate measures of financial health.

What's the fastest way to lower my DTI?

Either increase income or pay down/eliminate recurring debt payments — paying off a car loan or a credit card balance removes that monthly obligation entirely rather than just reducing it.

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