Debt-to-Income Ratio Calculator
Gross salary before taxes
Divided by 12 for monthly calculation
75% counted
Investment income, side business, etc.
Minimum monthly payments
Enter your base monthly income to see DTI ratios
Results update in real time as you type
This debt to income ratio Calculator adds up your monthly debt payments, divides them by gross income, and shows your front-end and back-end DTI in real time. Banks use that single percentage to decide if you can handle another loan. If you've ever been pre-approved for less than you expected, DTI was probably the reason. Read on and you'll also find out what counts as debt, what the 28/36 rule actually means, and how to pull your ratio down before you apply.
From this page, you'll learn:
- How to enter income and debts so your DTI matches what lenders see
- What front-end vs back-end ratio means and why both matter for mortgages
- Which payments count toward DTI (and which ones don't)
- Loan program DTI limits for conventional, FHA, VA, and USDA mortgages
How to Use the Debt to Income Ratio Calculator
Fill in your numbers on the left. Results update instantly on the right. No button to press.
- 1Enter Base Monthly Income. This is your gross pay before taxes. It's the anchor for every ratio on the page.
- 2Add bonus, commission, rental, and other income if you have them. Annual bonus gets divided by 12. Rental income counts at 75%, which is how most lenders treat it.
- 3List housing costs: mortgage or rent, property tax, insurance, PMI, and HOA. These feed your front-end ratio.
- 4Enter non-housing debts: credit card minimums, auto loans, student loans, personal loans, and anything else with a required monthly payment.
- 5Read the results panel. Front-end ratio is housing only. Back-end ratio is everything. Loan qualification cards show where you stand against common program limits.
Worked Example: Daniel checks his DTI before a refinance
Daniel earns $6,847 per month gross. His monthly debts: $1,216 mortgage, $347 car payment, $89 credit card minimum, and $124 student loan. He enters each figure and watches the back-end ratio land at 25.9%.
Gross Income
$6,847/mo
Total Debts
$1,776/mo
Back-End DTI
25.9%
Front-End DTI
17.8%
That puts Daniel well under the 36% back-end cap most conventional lenders want. He qualifies on paper. And just like that, Daniel knows exactly where he stands before he calls his lender.
What Is Debt-to-Income Ratio?
Imagine your paycheck is a pie. Every debt payment takes a slice. DTI tells you how big those slices are compared to the whole pie. A lender looks at the same picture and asks one blunt question: is there enough pie left if we add another slice?
Debt-to-income ratio (DTI) measures how much of your gross monthly income goes toward required debt payments each month, expressed as a percentage. Lenders use it to judge whether you can afford a new loan on top of what you already owe. Lower DTI usually means easier approval and better terms.
Daniel's 25.9% back-end DTI means roughly one quarter of his gross pay covers required debt. That's comfortable territory. A 7% DTI? That's excellent. You're barely leveraged. A 20% DTI? Also solid. Most lenders would cheer. But a 75% DTI is brutal. Three quarters of your income is spoken for before groceries, gas, or a surprise vet bill. That's the zone where approvals dry up fast.
Front-end vs back-end ratio
Two ratios, same income, different debt buckets. Front-end ratio (sometimes called housing ratio) only counts housing: mortgage or rent, taxes, insurance, PMI, HOA. Daniel's front-end is $1,216 ÷ $6,847 = 17.8%. Back-end ratio adds every other debt on top. That's the number most loan officers stare at hardest.
What's the 28/36 rule? It's a classic lending guideline. Housing costs should stay at or below 28% of gross income. Total debt should stay at or below 36%. Daniel clears both with room to spare. Note that automated underwriting systems on conventional loans can sometimes approve back-end ratios up to 50% if your credit and reserves are strong. The 28/36 pair is a target, not a hard wall in every case.
What counts (and what doesn't)
Does rent count toward debt-to-income ratio? Yes. Rent is a housing payment. Lenders treat it like a mortgage when you don't own yet. Are utilities included? No. Same for groceries, streaming subscriptions, and car insurance. Those are living costs, not debt payments. DTI only cares about obligations on a loan or credit agreement.
Credit card minimums count, even if you pay more. Student loans count, including income-driven plans (lenders may use the standard payment or a calculated substitute). Alimony and child support count too. What about a good credit score with a high DTI? Credit helps, but it doesn't erase a stretched ratio. A 780 FICO with a 48% DTI still makes underwriters nervous because the math says your budget is tight regardless of past payment history.
Lenders often quote the back-end number first because it captures the full picture. But if your housing ratio alone is 40%, the back-end doesn't need to be the villain. That housing slice already ate the pie. Now you know why we show both.
The Debt-to-Income Ratio Formula
Let's run Daniel's numbers by hand so the calculator output makes sense when you see it.
Back-End DTI = (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100
Front-End DTI = (Total Housing Costs ÷ Gross Monthly Income) × 100
- Gross Monthly IncomePay before taxes, plus qualifying bonus, commission, and rental income at lender rules.
- Housing CostsMortgage or rent, property tax, homeowner's insurance, PMI, and HOA fees.
- Total Debt PaymentsHousing costs plus minimum payments on credit cards, auto, student, personal, and other loans.
Daniel's calculation step by step
Add monthly debts
$1,216 + $347 + $89 + $124
Total = $1,776
Divide by gross income
$1,776 ÷ $6,847
0.2594
Convert to percentage
0.2594 × 100
Back-End DTI = 25.9%
Front-end (housing only)
$1,216 ÷ $6,847 × 100
Front-End DTI = 17.8%
Pretty easy, isn't it? Of course, you can skip all this counting and let the debt to income ratio Calculator do it instantly.
Where DTI Actually Matters
Buying a home
Maria wants a conventional mortgage. Most lenders cap back-end DTI at 36% for manual review, though automated underwriting (AUS) may allow up to 50% with strong compensating factors. FHA often allows 43%, sometimes higher. VA guidelines sit around 41% but can flex. USDA wants front-end at 29% and back-end at 41%. What DTI do you need to qualify for a mortgage? For the majority of borrowers, staying under 36% back-end keeps the most doors open.
Can you afford that car?
Auto lenders typically want a back-end DTI under 45%, though in most cases 35% or lower gets you the best rate. A $412 monthly payment hits differently when your income is $4,200 versus $8,900.
Run your full DTI here before you sign at the dealership. Sales floors love to focus on the monthly payment alone. That's only half the story.
Fixing a ratio that's too high
Kevin's back-end DTI was 44%. He couldn't refinance. So he paid down a $2,340 credit card balance (wiping out a $78 minimum), picked up a freelance contract worth $430 extra per month, and waited one billing cycle. His DTI dropped to 37%. Not magic. Just math and patience.
House hunting on a salary
Wondering how much house you can afford on $60,000 a year? At $5,000 gross monthly, a 36% back-end cap leaves about $1,800 for all debts combined. After a $1,050 mortgage payment, you'd have $750 left for car, student loans, and cards. Plug your real numbers into our House Affordability Calculator to see a price range that fits.
DTI vs Credit Utilization: The Mix-Up
Here's where most people get confused about debt-to-income ratio: they think their credit card utilization and their DTI are the same thing. They're not. Utilization compares your balance to your credit limit. It hits your credit score. DTI compares your minimum payment to your income. It hits your loan approval.
Say Priya owes $4,800 on a card with a $10,000 limit. Utilization is 48%. Bad for her score. But if her minimum payment is only $96 and she earns $7,200 a month, that's 1.3% of income toward that card. Barely moves her DTI. Sound familiar? You can have healthy utilization and still fail DTI if your total payments stack up. Or the reverse.
That's why we calculate DTI from actual payment amounts, not balances. Check both numbers before you apply. Your lender will.
FAQs
How do you calculate debt-to-income ratio?
Add up every required monthly debt payment, including housing. Divide that total by your gross monthly income before taxes. Multiply by 100 to get a percentage. For example: ($1,216 + $347 + $89 + $124) ÷ $6,847 × 100 = 25.9%. That's Daniel's back-end DTI. Our calculator runs this automatically as you type.
What is a good debt-to-income ratio?
For the majority of borrowers, a back-end DTI of 36% or less is considered good. Under 28% is excellent. Front-end housing ratio at or below 28% is the traditional sweet spot. A 7% DTI is outstanding. A 20% DTI is solid. Above 43% back-end gets hard for most mortgage programs. Above 50% is generally too high for any lender to accept.
What payments are included in DTI?
Minimum credit card payments, auto loans, student loans, personal loans, mortgage or rent, property taxes, homeowner's insurance, PMI, HOA dues, alimony, and child support. Utilities, food, gas, car insurance, and phone bills are not included. Lenders care about fixed obligations, not everyday spending.
Does rent count toward my debt-to-income ratio?
Yes. If you're renting, your monthly rent payment goes into the housing portion of your front-end ratio and counts toward your back-end total. When you buy a home, lenders swap rent for your new mortgage payment plus taxes and insurance. Either way, housing is always in the mix.
What DTI do I need to qualify for a mortgage?
Here's a quick breakdown: (1) Conventional loans: 36% back-end is the classic cap, up to 50% through automated underwriting with strong credit. (2) FHA: 43% typical, sometimes higher. (3) VA: 41% guideline with flexibility. (4) USDA: 29% front-end and 41% back-end. Staying at or below 36% back-end keeps the widest range of options open. If you're near a limit, run the numbers here before you apply so there are no surprises.
Related calculators: Budget Calculator · Down Payment Calculator