Debt-to-Income Ratio Calculator
Use your monthly gross income and minimum monthly debt payments to figure your DTI ratio. This includes both front-end and back-end DTI.
Tip: Enter a future loan payment to see projected DTI before applying.
What is debt-to-income ratio (DTI)?
Your debt-to-income ratio is a simple percentage that compares your monthly debt obligations to your gross monthly income. Lenders use it to estimate how comfortably you can handle new payments. In plain terms, it answers this question: How much of your monthly income is already committed to debt?
Core formula:
DTI = (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100
Front-end vs back-end DTI
Front-end DTI (housing ratio)
This ratio looks only at housing costs compared to income. Typically includes mortgage or rent, property taxes, homeowners insurance, and HOA dues if relevant.
Back-end DTI (total debt ratio)
This ratio includes housing plus all recurring debt payments: minimum credit card payments, auto loans, student loans, personal loans, child support, and similar obligations.
Most lenders focus more heavily on back-end DTI when approving new credit, especially mortgages.
How to figure debt to income ratio correctly
- Use gross income (before taxes, retirement deductions, and insurance deductions).
- Use minimum monthly debt payments, not full balances.
- Include debts that appear on your credit and legal payment obligations.
- Do not include regular living costs like groceries, gas, utilities, and phone bills in DTI calculations.
- If income varies, use a realistic monthly average from recent pay periods.
What is considered a good DTI ratio?
Thresholds vary by lender and loan type, but general benchmarks are:
- Front-end DTI: ideally 28% or lower
- Back-end DTI: ideally 36% or lower
- 43%: common upper boundary in many mortgage underwriting contexts
- 50%+: often considered high risk and may reduce approval chances
Example DTI calculation
Suppose your gross monthly income is $7,000. Housing is $1,900. Other debts are $650.
- Front-end DTI = 1,900 ÷ 7,000 × 100 = 27.1%
- Back-end DTI = (1,900 + 650) ÷ 7,000 × 100 = 36.4%
Interpretation: housing is in a generally acceptable range, while total obligations are near a common underwriting limit.
How to lower your DTI ratio quickly
1) Pay down revolving debt
Reducing credit card balances may lower minimum payments and improve DTI. It can also help your credit score through lower utilization.
2) Refinance or consolidate
If you qualify for a lower rate or longer term, monthly required payments may decrease. Be careful with total interest costs over time.
3) Increase gross income
Overtime, freelance work, side income, or a salary increase can improve DTI if income is documentable and stable.
4) Delay a new loan application
Waiting to add another payment can keep your DTI below lender thresholds and improve approval odds.
Common DTI mistakes to avoid
- Using net income instead of gross income
- Forgetting annual obligations converted into monthly equivalents
- Leaving out non-housing recurring debt
- Assuming approved prequalification means final underwriting will pass
Frequently asked questions
Does rent count in DTI?
Yes. For front-end and back-end calculations, rent is generally treated as housing obligation.
Do utilities count?
Usually no. Standard DTI does not include utilities, groceries, transportation fuel, or subscriptions.
Is a lower DTI always better?
Generally yes for borrowing capacity and risk, though lenders evaluate DTI alongside credit score, assets, employment history, and cash reserves.
Final thought
If you want to figure debt to income ratio for a mortgage, auto loan, or personal loan, start with accuracy. Use this calculator as a quick planning tool, then confirm exact debt treatment with your lender before applying.