Debt-to-Income Ratio Calculator

Some or all of the mortgage lenders featured on our site are advertising partners of NerdWallet, but this does not influence our evaluations, lender star ratings or the order in which lenders are listed on the page. Our opinions are our own. Here is a list of our partners.

Updated · 2 min read
Profile photo of Barbara Marquand
Written by Barbara Marquand
Senior Writer
Profile photo of Michelle Blackford
Reviewed by Michelle Blackford
Profile photo of Dawnielle Robinson-Walker
Assistant Assigning Editor
Fact Checked

Your debt-to-income ratio, or DTI, plays a big role in how much you can borrow and whether you qualify for a mortgage.

DTI is the percentage of your pretax, or gross income, that goes toward paying debt each month, including a projected mortgage payment if you're applying for a home loan.

Calculate your debt-to-income ratio

ADVERTISEMENT

Mortgage loans from our partners

New American Funding - PURCHASE logo
Check Rate

on New American Funding

New American Funding

4.5

NerdWallet rating 
New American Funding - PURCHASE logo

4.5

NerdWallet rating 
Min. credit score 
500

Min. down payment 
3.5%

Check Rate

on New American Funding

Rocket Mortgage - PURCHASE logo
Check Rate

on Rocket Mortgage

Rocket Mortgage

5.0

NerdWallet rating 
Rocket Mortgage - PURCHASE logo

5.0

NerdWallet rating 
Min. credit score 
580

Min. down payment 
3.5%

Check Rate

on Rocket Mortgage

Veterans United - PURCHASE logo
Check Rate

on Veterans United

Veterans United

4.5

NerdWallet rating 
Veterans United - PURCHASE logo

4.5

NerdWallet rating 
Min. credit score 
620

Min. down payment 
0%

Check Rate

on Veterans United

ADVERTISEMENT

Mortgage loans from our partners

New American Funding - PURCHASE logo
Check Rate

on New American Funding

New American Funding

4.5

NerdWallet rating 
New American Funding - PURCHASE logo

4.5

NerdWallet rating 
Min. credit score 
500

Min. down payment 
3.5%

Check Rate

on New American Funding

Rocket Mortgage - PURCHASE logo
Check Rate

on Rocket Mortgage

Rocket Mortgage

5.0

NerdWallet rating 
Rocket Mortgage - PURCHASE logo

5.0

NerdWallet rating 
Min. credit score 
580

Min. down payment 
3.5%

Check Rate

on Rocket Mortgage

Veterans United - PURCHASE logo
Check Rate

on Veterans United

Veterans United

4.5

NerdWallet rating 
Veterans United - PURCHASE logo

4.5

NerdWallet rating 
Min. credit score 
620

Min. down payment 
0%

Check Rate

on Veterans United

Maximum debt-to-income ratio to buy a house

Lenders consider two types of ratios — a front-end DTI and a back-end DTI. The front-end DTI is your projected mortgage payment divided by your gross, or pretax, income. The back-end DTI is your projected mortgage payment, plus all your other monthly debt payments, divided by your gross income.

The DTI calculator gives a figure for the back-end DTI, which gives a fuller financial picture.

An ideal back-end DTI is under 36%. It's possible to qualify for a mortgage with a higher DTI, but you'll likely pay more interest, and your options for qualifying will dwindle with a DTI approaching 50% or more.

How debt-to-income ratio is calculated

Here's the formula for calculating DTI:

Your monthly debt payments / Your monthly gross, or pretax income = DTI

Debts that are included in DTI

Monthly payments for the following are included in the calculation when you're applying for a mortgage:

  • Alimony.

  • Car loans.

  • Child support.

  • Co-signed loans.

  • Credit cards.

  • Estimated mortgage (including property tax, home insurance, mortgage insurance).

  • Personal loans.

  • Student loans.

🤓Nerdy Tip

Include the monthly minimum due on credit cards in the DTI calculator, even if you typically pay more than the minimum.

Costs that are not included in DTI

DTI does not include costs for other items in a typical budget such as:

  • Car insurance.

  • Cell phone.

  • Food.

  • Health insurance.

  • Utilities.

How to lower debt-to-income ratio

Lowering your DTI will improve the odds of qualifying for a mortgage at the best available interest rates. Here are some tips for approaching it.

  • Avoid increasing expenses if you get a raise or take on a second job. The income boost will lower DTI, but only if you avoid taking on more credit card or other debt.

  • Use a salary raise or windfall to pay down debt. 

  • Reduce expenses if you can, and use that extra money to pay down debt.

More Nerdy Perspective
How can you lower your DTI?
ADVERTISEMENT

Mortgage loans from our partners

New American Funding - PURCHASE logo
Check Rate

on New American Funding

New American Funding

4.5

NerdWallet rating 
New American Funding - PURCHASE logo

4.5

NerdWallet rating 
Min. credit score 
500

Min. down payment 
3.5%

Check Rate

on New American Funding

Rocket Mortgage - PURCHASE logo
Check Rate

on Rocket Mortgage

Rocket Mortgage

5.0

NerdWallet rating 
Rocket Mortgage - PURCHASE logo

5.0

NerdWallet rating 
Min. credit score 
580

Min. down payment 
3.5%

Check Rate

on Rocket Mortgage

Veterans United - PURCHASE logo
Check Rate

on Veterans United

Veterans United

4.5

NerdWallet rating 
Veterans United - PURCHASE logo

4.5

NerdWallet rating 
Min. credit score 
620

Min. down payment 
0%

Check Rate

on Veterans United

ADVERTISEMENT

Mortgage loans from our partners

New American Funding - PURCHASE logo
Check Rate

on New American Funding

New American Funding

4.5

NerdWallet rating 
New American Funding - PURCHASE logo

4.5

NerdWallet rating 
Min. credit score 
500

Min. down payment 
3.5%

Check Rate

on New American Funding

Rocket Mortgage - PURCHASE logo
Check Rate

on Rocket Mortgage

Rocket Mortgage

5.0

NerdWallet rating 
Rocket Mortgage - PURCHASE logo

5.0

NerdWallet rating 
Min. credit score 
580

Min. down payment 
3.5%

Check Rate

on Rocket Mortgage

Veterans United - PURCHASE logo
Check Rate

on Veterans United

Veterans United

4.5

NerdWallet rating 
Veterans United - PURCHASE logo

4.5

NerdWallet rating 
Min. credit score 
620

Min. down payment 
0%

Check Rate

on Veterans United

Did you know? NerdWallet partners with highly-rated mortgage lenders to find you the best possible rates
Answer a few questions to match with your personalized offer
Won’t affect your credit score
MORE LIKE THISMortgages
Get more smart money moves – straight to your inbox
Sign up and we’ll send you Nerdy articles about the money topics that matter most to you along with other ways to help you get more from your money.