Debt-to-Income Ratio: What It Means for a Car Loan

The short answer

Your debt-to-income ratio (DTI) is all of your monthly debt payments divided by your gross monthly income. The Consumer Financial Protection Bureau describes it as one way lenders measure your ability to manage the monthly payments on money you plan to borrow, and it notes that different loan products and lenders have different DTI limits. So there's no single "approved" number for a Texas car loan. What you can do before you apply is work out your own DTI, see what a new car payment would do to it, and decide whether to change the plan first.

This is general information based on the CFPB's explainer, which we opened for this post. It's not financial or legal advice, and it isn't a promise about any lender's decision.

How the CFPB says to calculate DTI

The CFPB's method is simple:

1. Add up your monthly debt payments. Think rent or mortgage, existing car loans, minimum credit card payments, student loans, personal loans.
2. Divide by your gross monthly income. The CFPB says gross monthly income is generally what you earn before taxes and other deductions come out.

The CFPB's own example: a $1,500 mortgage, a $100 auto loan, and $400 in other debts add up to $2,000 a month. With $6,000 in gross monthly income, the DTI is about 33% ($2,000 ÷ $6,000).

What a car payment does to the math (a hypothetical)

Here's a labeled example, using the CFPB's numbers as the starting point:

• Current monthly debts: $2,000
• Gross monthly income: $6,000
• Current DTI: about 33%

Now add a hypothetical $500 car payment. Monthly debts become $2,500, and DTI becomes about 42% ($2,500 ÷ $6,000). If the new car replaces the $100 loan you already have, the net increase is $400, and DTI lands at 40% ($2,400 ÷ $6,000).

Those numbers are only an illustration. We aren't saying 33%, 40%, or 42% will or won't get approved anywhere. The CFPB is clear that limits vary by product and lender. The point is to know your own number before a lender calculates it for you.

Ways to bring DTI down before you apply

DTI has two parts, so there are two kinds of moves: lower the payment you're adding, or lower the debts you already carry.

• Borrow less. A bigger down payment or more trade equity means a smaller loan and a smaller payment. We covered how a down payment also lowers your loan-to-value ratio in down payment and loan-to-value.
• Be careful with longer terms. Stretching a loan to lower the monthly payment can make DTI look better while the total cost goes up. See long-term auto loans and why we focus on total cost, not the monthly payment.
• Pay down a small balance. Clearing a card or small loan removes that minimum payment from the top of the ratio.
• Check your credit report. A debt that isn't yours, or an account showing a payment you no longer owe, can distort the picture. Our guide to credit report errors walks through disputes.
• Count income accurately. Use gross income you can document. Don't round up.

Gather this before you start

• Recent pay stubs or other proof of income
• A list of every monthly debt payment and its minimum amount
• Your trade-in's payoff amount, if you have one
• A target payment that keeps the total cost reasonable, not just the monthly number

If you want to know how pre-approval differs from a quick prequalification, see pre-approval vs. prequalification.

Frequently asked questions

What DTI do I need for a car loan in Texas?

There isn't one number. The CFPB says different loan products and lenders have different DTI limits. Calculate yours and compare options rather than aiming for a figure you read online.

Is DTI calculated on take-home pay?

No. The CFPB says DTI uses gross monthly income, which is generally your income before taxes and other deductions.

Does my rent count in DTI?

The CFPB's example includes housing (a mortgage payment) as one of the monthly debt payments. Ask each lender which obligations it counts.

Bottom line

DTI is your monthly debt payments divided by your gross monthly income. Lenders use it, and their limits differ. Work out your number, see what the new payment does to it, and lower the loan amount or your existing debts if the result makes you uncomfortable.

Check your pre-approval: Start the form. No SSN required to begin.