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Debt-to-Income Ratio Calculator

Do you know what your debt-to-income ratio is? A lender will want to know, and so should you. This DTI Ratio Calculator will show you how.
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How the debt-to-income calculator works 

The Debt-To-Income (DTI) Calculator is a tool to help you determine the amount of fixed monthly payments you have compared to your income.

It can also show you if you’re in danger of your monthly payments exceeding your income – or even if you’re coming close.

The calculator starts out by asking you for your gross monthly income

“Gross” is the income you receive before payroll deductions, like income tax and FICA tax withholding, payments for health insurance, or contributions to an employer-sponsored retirement plan.

Though it may be more helpful for you on a personal level to know what your debt-to-income ratio is based on your net income (your income after payroll deductions), lenders base the ratio on your gross income.

After listing your gross monthly income, the calculator provides boxes for common fixed monthly payments

Specifically, that includes student loans, auto loans, and your mortgage payment. If you have no mortgage payment, you should insert your monthly rent in this box.

The “Minimum credit card payment” refers to the total minimum payments on all credit cards you have balances on. The minimum payment is the payment indicated on your monthly credit card statements.

While it’s common for consumers to pay more than the minimum each month, debt-to-income ratios are calculated based only on the minimum monthly payment.

Finally, there are the “Other monthly debt payments”, which is a catchall for all other fixed monthly payments. In this box, you can include non-credit related payments, such as child support or alimony.

Once you enter all the information above, hit the “calculate” button

Voilà – you now have your debt-to-income ratio presented as both a percentage and a ratio.

Don’t forget – lenders are most concerned with the debt-to-income percentage, so it’s the one you’ve gotta be most concerned about.

Why you should use the DTI ratio calculator

There are two major reasons you should use the Debt-to-Income Calculator:

To see if your monthly debt obligations are becoming excessive.

A high debt-to-income ratio can be an indication of financial trouble ahead, even if you seem to be easily managing your payments right now. 

For example, let’s say your debt-to-income ratio is 50%. Let’s also say payroll deductions are eating up another 20%. That leaves just 30% of your gross income to cover everything else in life. 

With a debt-to-income ratio that high, you may not be in a position to take on an additional obligation, should one arise. Knowing what the ratio is can help you determine the need to begin reducing your fixed monthly obligations.

To know where you stand before applying for credit

Lenders use the debt-to-income ratio as the determining factor in approving new credit.

By knowing what your debt-to-income ratio is before you apply, you’ll have a better chance of knowing whether you’ll be approved. Rather than submitting an application doomed to denial, you can take steps to lower your debt-to-income ratio in advance. 

How to calculate your debt-to-income 

So you now know how to use the calculator to calculate your debt-to-income ratio.

But there’s more specific information on this calculation based on the way lenders will calculate it. Remember that lenders:

  • use your gross income, not your net income, to calculate the ratio. For whatever reason, payroll deductions like income taxes, health insurance premiums, and retirement plan contributions, are not considered recurring obligations – even though that’s exactly what they are. 
  • also disregard other common monthly expenses, like payments for utilities, insurance policies, cell phones, cable TV, and other subscriptions.

What’s left? Monthly payments tied to a debt or ordered by a court. That’s why the calculator includes monthly payments for your mortgage, student loans, auto loans, minimum credit card payments, and other monthly debt payments. And as a reminder, you should include any court-ordered payments, such as child support or alimony, in the last box. Technically, they are not debts, but since they’re court-ordered, they’re legal obligations. 

How to get out of debt

It’s the question you just want the plain-and-simple answer to. There are two excellent ways to do it.

Use a balance transfer credit card – stop paying interest on your debt 

Balance transfer credit cards are brilliant. I’m not joking – they really are. What you do is move your debt from one credit card to a balance transfer credit card and effectively pay off your outstanding balance. The reason why you do it is because of the amazing promotion that comes with these balance transfer credit cards: you don’t pay any interest at all for some extended period of time.

Set up a personal or debt consolidation loan 

The second key way to get out of debt is by consolidating your loans. In other words, you combine your debt from all kinds of places like your credit cards and high-interest loans, bill, etc, and get a loan with ideally a much lower interest rate. This way you pay down your debt quicker by saving money on the interest you would have been otherwise paying at the higher rate.

The most important thing to remember? Only go this route of getting a debt consolidation loan if you can definitely – without a shadow of a doubt – may your monthly payments.

Here’s my recommendation for the best personal loan offers you can look into:

Does your debt-to-income ratio affect your credit score?

There’s no direct connection between your debt-to-income ratio and your credit score since the credit bureaus don’t calculate the ratio. But it generally follows that the higher your debt-to-income ratio is, the closer you are to being maxed out on your credit cards.

And it should go without saying that the status of being overextended greatly increases the likelihood of missing monthly payments. This will flow into your payment history and lower your credit score, often substantially.


Money Under 30’s DTI Ratio Calculator gives you that ratio you really will want and need to know. If you’re getting dangerously close to overspending each month, it can also tell you if you’re likely to get approved or denied by a lender.

It’s for sure a good way to be sure you know where things stand – in case you need to look at the raw numbers and (gulp) hard facts. 

If you want to help get your debt under control, don’t forget to check out high-yield savings account options.

About the author

Kevin Mercadante

Kevin has 20+ years of experience covering insurance, mortgages, and banking. He holds a Bachelor’s Degree in Finance from Montclair State University and personal finance experience working in CPA firms and mortgage companies.