Debt-to-Income (DTI) Ratio Calculator – Check Loan Readiness in 3 Easy Steps
Debt-to-Income (DTI) Calculator
Use this debt-to-income (DTI) ratio calculator to see if you qualify for a mortgage or personal loan.
Use this free Debt-to-Income (DTI) Ratio Calculator to see how much of your monthly income goes to debt, the number lenders check before approving a mortgage, car loan or personal loan. Enter your gross monthly income and your monthly debt payments, and the tool shows your DTI percentage, total monthly debt and how lenders are likely to view it.
Quick answer
Debt-to-income ratio = total monthly debt payments ÷ gross monthly income × 100. If you earn $6,500 a month before tax and pay $1,800 rent, $420 for a car loan, $150 minimum on cards and $300 on student loans, your debts total $2,670 and your DTI is 41.1%. Many lenders prefer a DTI below 36%, and 43% is a common upper limit for mortgages.
Table of Contents
Two people with the same salary can get very different loan offers. One reason is DTI. A lower ratio tells a lender you have room in your budget to take on a new payment; a high ratio suggests you are already stretched.
This debt-to-income (dti) ratio calculator gives you the same number a lender will calculate, so you can improve it before you apply. It runs in your browser and stores nothing.
What Is Debt-to-Income Ratio?
Debt-to-income ratio (DTI) compares your recurring monthly debt payments with your gross monthly income, which is income before tax and other deductions. Lenders use it alongside your credit score to judge how much you can safely borrow.
Front-End vs Back-End DTI
- Front-end ratio: only housing costs (rent or mortgage payment, property tax, insurance) divided by gross income.
- Back-end ratio: all monthly debt payments, including housing, car loans, credit cards and student loans. This is the figure most people mean by DTI, and it is what this calculator shows.
DTI Formula
- Total monthly debt = housing payment + car loan + minimum credit card payments + student loans + other loans
- DTI (%) = total monthly debt ÷ gross monthly income × 100
Include only fixed debt obligations. Groceries, utilities, phone bills, insurance premiums and subscriptions are not counted.
How to Use the Debt-to-Income (DTI) Ratio Calculator
Step 1: Enter Income and Monthly Debts
Type your gross monthly income from all regular sources. Then enter each monthly debt payment: rent or mortgage, car loan, minimum credit card payments, student loans and any other debts such as personal loans or child support.
Step 2: Read Your DTI Ratio
Press Calculate DTI Ratio. In this example, $2,670 of monthly debt on $6,500 of income gives a DTI of 41.1%. The tool rates it as acceptable, but lenders may ask for a larger down payment or offer less favourable terms.
Step 3: See How Paying Off Debt Helps
Change the numbers to plan improvements. Paying off the car loan and cutting card payments to $60 brings monthly debt down to $2,160 and the DTI to 33.2%, which moves you into the range most lenders consider good.
What Is a Good DTI Ratio?
| DTI ratio | What lenders usually think |
|---|---|
| Below 20% | Excellent; plenty of room for new credit |
| 20% to 35% | Good; most loans are within reach |
| 36% to 43% | Acceptable; may need stronger credit or a bigger down payment |
| 44% to 50% | High; fewer lenders and loan types available |
| Above 50% | Very high; approval is difficult |
Exact limits differ by lender, country and loan type. Some government-backed mortgages allow higher ratios with compensating factors such as large savings.
How to Lower Your DTI
- Pay down or pay off smaller debts first to remove whole monthly payments.
- Avoid new credit cards or car loans in the months before a mortgage application.
- Refinance high-interest debt to a lower monthly payment where it makes sense.
- Increase your income with a raise, side work or adding a co-borrower.
- Use the avalanche or snowball method to clear revolving balances faster.
DTI Examples
| Gross income | Monthly debt | DTI |
|---|---|---|
| $4,000 | $1,000 | 25.0% |
| $6,500 | $2,160 | 33.2% |
| $6,500 | $2,670 | 41.1% |
| $5,000 | $2,500 | 50.0% |
DTI and Your Mortgage Budget
You can turn DTI around to estimate how big a mortgage payment you could take on. Multiply your gross monthly income by the DTI limit your lender uses, then subtract your other monthly debts. With $6,500 of income and a 43% limit, total debt can be up to $2,795. If your car, card and student loan payments add up to $870, the most you could put toward housing is about $1,925 a month, including property tax and insurance.
Use the Debt-to-Income (DTI) Ratio Calculator before you shop for homes, so you know a realistic price range and are not surprised at the pre-approval stage.
Mistakes to Avoid
Do not use your take-home pay instead of gross income, or your ratio will look worse than a lender would calculate. Do not leave out small debts such as buy-now-pay-later plans or store cards, since they appear on your credit report. And remember that a co-signed loan usually counts as your debt too, even if someone else makes the payments.
Planning a home purchase? Compare options with the Rent vs Buy Property Calculator and check refinancing with the Mortgage Refinance Savings Calculator.
Frequently Asked Questions
How do I calculate my debt-to-income ratio?
Add up your monthly debt payments, divide by your gross monthly income and multiply by 100.
What DTI do I need for a mortgage?
Many lenders look for 36% or less, and 43% is a common maximum for qualified mortgages. Some programmes allow more with strong credit or savings.
Is DTI based on gross or net income?
Gross income, which is your income before taxes and deductions.
Which debts count toward DTI?
Rent or mortgage, car loans, minimum credit card payments, student loans, personal loans and court-ordered payments such as child support.
Does DTI affect my credit score?
No. DTI is not part of your credit score, but lenders consider both when deciding on a loan.
Is my financial data stored?
No. The debt-to-income (dti) ratio calculator works entirely in your browser.