Debt-to-Income Ratio: What It Is and How to Improve Yours

Your debt-to-income ratio — DTI for short — is exactly what it sounds like: how much of your monthly income goes toward debt payments. If you make $5,000 a month and pay $1,500 toward loans and credit cards, your DTI is 30%.

Banks and mortgage lenders use this number to decide whether to lend you money. The lower it is, the better you look. But even if you're not applying for a loan, knowing your DTI tells you how much breathing room you really have.

How to calculate your DTI

Add up all your monthly debt payments:

• Mortgage or rent — no, rent doesn't count for DTI (it's not debt)
• Car payment
• Student loan payment
• Credit card minimums
• Personal loan payments
• Any other recurring debt obligations

Don't include utilities, groceries, or subscriptions — those aren't debt. Now divide that total by your gross monthly income (before taxes). That's your DTI.

What's a good DTI?

• Under 36%: Comfortable. Lenders like this. You have room in your budget.
• 36% to 43%: Getting tight. You might qualify for a mortgage but you're at the higher end.
• 43% to 50%: Red flag. Most lenders consider this risky. You're probably feeling it month to month.
• Over 50%: Problem territory. More than half your income goes to debt before you buy anything else.

For a conventional mortgage, most lenders want to see 36% or lower. FHA loans will sometimes go up to 43%. Above that, you need to pay down debt before anyone will take you seriously.

DTI vs credit score

Your credit score tells lenders how reliable you are at paying back money. Your DTI tells them whether you can afford to borrow more. You can have an 800 credit score and a 50% DTI — you look great on paper until someone does the math on your monthly obligations. A lot of people get surprised by this when they apply for a mortgage.

How paying off debt helps

Every time you eliminate a monthly payment, your DTI drops. Pay off a credit card with a $100 minimum? That's a permanent improvement. If you make $4,000 a month, paying off one $200/month loan drops your DTI by 5 percentage points.

This is also why the snowball method appeals to some people — eliminating accounts one at a time gives you fewer debt payments showing up in your DTI calculation.