What is a debt to income (DTI) ratio?

The DTI ratio compares your monthly debt payments to your gross monthly income. It helps lenders assess if you can manage new loan payments on top of your existing debts.

Why does my DTI ratio matter for mortgages?

Lenders use your DTI to determine if you qualify for a mortgage and how much you can borrow. Lower DTIs generally mean better loan options and interest rates.

What’s the difference between front-end and back-end DTI?

Front-end DTI includes only housing costs. Back-end DTI includes all monthly debts. Both ratios help lenders evaluate your ability to repay a loan.

Can I use this calculator for any type of loan?

Yes, the calculator works for mortgages, auto loans, personal loans, student loans, and more. Just enter your monthly debts to see your DTI ratios.

How do I add more debts to the calculator?

Click “Add debt” to include additional loan types or obligations beyond those listed. Enter the monthly payment for each.

Can I save or share my results?

Absolutely. Use the Copy, Export PDF, or Export Excel features to download or share your DTI results with others or keep them for your records.

Debt to Income Ratio Calculator

Calculate your debt-to-income ratio instantly.

Calculator Inputs

Income and monthly debt payments

Gross monthly income ($)

Before tax. Annual salary ÷ 12.

Housing costs ($/month)

Mortgage P&I, rent, taxes, insurance, HOA.

Other monthly debt

Car loans, credit cards, student loans, etc.

Monthly payment ($)

Results

Front-end and back-end DTI ratios

Gross monthly income

$6,000

Total monthly debt

$2,500

Front-end DTI

30.0%

Back-end DTI

41.7%

Back-end DTI above typical 36%. U.S. lenders often prefer ≤36%. Many allow up to 43% with strong factors; higher may limit loan options. For education only.

DTI Ratios

Front-end (housing) vs back-end (total debt). U.S. guideline: front ≤28%, back ≤36%.

Debt Breakdown

Monthly payments and % of gross income

Category	Monthly Payment	% of Income
Housing	$1,800	30.0%
Car Loan	$350	5.8%
Credit Cards	$150	2.5%
Student Loan	$200	3.3%
Total debt	$2,500	41.7%

For educational and estimation purposes only; not financial or lending advice. U.S. context. DTI requirements vary by lender and loan type. Consult a financial advisor for your situation.

How It Works

Enter Your Income and Debts
- Input your gross monthly income (before taxes). If you know your annual salary, divide it by 12.
- Add your monthly housing costs, including mortgage principal and interest (P&I), rent, property taxes, homeowner’s insurance, and HOA dues.
- List your other monthly debts, such as car loans, credit cards, and student loans. You can add additional debts as needed.
Calculate Your Ratios
- Click Calculate to see your results.
- The calculator instantly shows your gross monthly income and total monthly debt.
Understand Your Results
- Front-end DTI shows the percentage of your income spent on housing.
- Back-end DTI shows the percentage spent on all debt payments.
- Results are compared to common U.S. lender guidelines (typically ≤28% for front-end, ≤36% for back-end). Some lenders may allow back-end DTIs up to 43% with strong financial factors.
Review Debt Breakdown and Charts
- See a detailed breakdown of each monthly payment and its percentage of your income.
- Visual charts help you compare your DTI ratios to lender benchmarks.
Export or Save Results
- Use the Copy, Export PDF, or Export Excel features to save or share your results for future reference or with your loan officer.
Reset as Needed

Click Reset to clear all fields and start a new calculation.

Understanding Debt to Income Ratio

A debt-to-income (DTI) ratio measures how much of your monthly income goes toward paying debts. Lenders use this number to decide whether you qualify for a mortgage or other loans. Understanding your DTI can help you know where you stand financially and what you can afford to borrow.

If you’re planning to buy a home, refinance, or take out a loan, your DTI ratio is one of the first things lenders check. A high DTI can make it harder to get approved or may limit your loan options. Lowering your DTI improves your financial profile and expands your borrowing choices.

Front-end DTI looks at only your housing costs (like mortgage, rent, property taxes, insurance, and HOA dues) compared to your gross monthly income.

Back-end DTI includes all your monthly debt payments, housing, car loans, credit cards, student loans, and other debts, compared to your gross income.

For example, if you earn $6,000 a month before tax and pay $1,800 for housing and $700 in other debts, your DTI ratios help show how much of your income is tied up in payments.

How This Calculator Helps

This calculator provides a quick, accurate way to measure both your front-end and back-end DTI ratios. By entering your gross monthly income and listing your monthly debt payments, including housing, car loans, credit cards, and student loans, you get an instant snapshot of your financial health.

The calculator clearly shows:

Your gross monthly income
Your total monthly debt
Your front-end DTI (housing only)
Your back-end DTI (all debts)
A debt breakdown by category and percentage of income
Visual charts comparing your DTI to common U.S. lender guidelines

With this information, you can see where you stand versus typical lender preferences, helping you prepare for mortgage or loan applications.