How to use the DTI calculator
- Enter your gross monthly income — your pay before tax and deductions. If you earn a salary, divide it by 12. Include side income you can document.
- Fill in your monthly debt payments: rent or mortgage (with property tax, insurance and HOA if you own), car loan or lease, student loans, credit card minimums and any other loans or support payments.
- Read your debt-to-income ratio, the rating band and how much payment room you have before reaching 36%.
Save, print or share your DTI result
You don't have to start over next time. Under the calculator you can:
- Save the calculation in your browser with a name, then reopen it from "Saved calculations" whenever you like.
- Copy a link that reopens this exact calculation with all your numbers — on your phone, another computer or for someone you're planning with.
- Print a clean one-page report, or download it as a PDF. It shows your debt-to-income ratio, housing ratio and how much room you have before 36% and 43%, plus a QR code at the top: scan it with your phone camera and the calculation opens again with every number filled in.
- Download a CSV to open in Excel, Google Sheets or Numbers.
Nothing is uploaded: saved calculations stay on your device, and the link and QR code carry your inputs inside the address itself.
What your DTI means
| DTI | What lenders usually think |
|---|---|
| 35% or less | Comfortable. You should qualify for most loans if your credit is good. |
| 36% – 43% | Manageable. Within most mortgage limits, but you may need more savings or a better score. |
| 44% – 49% | High. Many lenders decline or offer worse rates. |
| 50% or more | Very high. A payoff plan should come before new borrowing. |
The calculator also shows your front-end ratio — housing costs alone. Mortgage lenders traditionally like this at or below 28%.
Why DTI matters even if you're not buying a house
Lenders use DTI to judge whether you can take on a new payment. But it's also a quick health check for your own budget: if half your gross income goes to debt before you buy groceries, there's little room for savings or surprises.
Landlords look at it too. Many want your income to be about 40 times the monthly rent, and they check your other debts. The rent affordability calculator uses the same thresholds to suggest a safe rent.
Gross income vs take-home pay
DTI always uses gross income — what you earn before tax. Your actual budget runs on take-home pay, which can be 20% to 30% lower after federal tax, Social Security, Medicare, state tax and benefits. A 36% DTI can feel more like 45% to 50% of your take-home pay. Use the take-home pay calculator to see your real paycheck.
How to lower your DTI
- Clear a small debt completely. Removing a $150 minimum payment drops DTI more than paying $150 extra on a large loan.
- Pay credit cards down. Card minimums fall as balances fall.
- Don't add new payments before an important application.
- Raise income — a raise, overtime or documented side income all count.
The debt payoff calculator shows the order your debts disappear and the month each payment is freed up, which tells you when your DTI will drop. For the strategy behind it, read our guide to snowball vs avalanche.
Watch your DTI fall month by month
Paying debt down is easier when you can see the payments drop off. Zero, the VaultlyApps debt payoff planner, tracks every balance and shows when each one will be gone, and Vault, the personal finance dashboard, puts debt next to your budget and net worth. Both have a free live demo with sample data.
Frequently asked questions
Can I save, print or download my DTI result?
How do I calculate my debt-to-income ratio?
What is a good debt-to-income ratio?
Do I include rent in my DTI?
Which expenses are not part of DTI?
What is the difference between front-end and back-end DTI?
How can I lower my debt-to-income ratio quickly?
Written by
Finance Specialist & Editor, VaultlyApps
Emma Whitfield writes and edits the VaultlyApps money guides and free calculators. Her focus is US household finance — budgeting on a real paycheck, paying down credit card and student debt, emergency funds and savings goals, renting — and the money side of freelancing and small-business income, from pricing and profit margins to self-employment tax. Every guide is researched against primary sources such as IRS publications and the CFPB, every number is checked in our tested calculators, and tax content is reviewed each year when new IRS figures come out. Emma is not a licensed financial adviser or tax preparer; her work is general education, not personal advice.
Researched against primary US sources, checked against independent calculators and reviewed by a finance expert on our team. Written for US readers — general education, not financial, tax or legal advice. Editorial policy · Disclaimer
