Financial
Debt to Income Calculator
Check front-end and back-end debt-to-income ratios.
Inputs
Adjust the assumptions to match your scenario. Results update instantly.
Results
Primary outputs and comparison insights are built from the current inputs.
Front-end DTI
24.19%
Housing cost as a percentage of gross monthly income.
Back-end DTI
34.68%
Housing plus other debt as a percentage of gross monthly income.
Income after debt
$4,050.00
Gross monthly income left after housing and debt payments.
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How this Debt to Income Calculator works
The Debt to Income Calculator helps you estimate front-end and back-end DTI ratios so you can gauge borrowing capacity and monthly affordability. Enter monthly debt, housing cost, and gross income to estimate front-end dti, back-end dti, and income after debt. The calculator updates instantly and adds a comparison table plus chart so you can test the sensitivity of the result before you use it in a decision.
Quick guide
Jump to the section you need, then return to the debt to income calculator.
Inputs
- Monthly debt payments excluding housing, such as loans and cards.
- Monthly housing payment including rent or mortgage-related cost.
- Gross monthly income used by lenders for DTI checks.
Outputs
- Housing cost as a percentage of gross monthly income.
- Housing plus other debt as a percentage of gross monthly income.
- Gross monthly income left after housing and debt payments.
Assumptions
- Income is treated as gross monthly income before taxes.
- Debt payments are modeled as fixed monthly obligations.
Tips
- Back-end DTI is often more relevant for lending decisions than front-end alone.
- Use stable income figures rather than unusually strong months.
Debt to Income Calculator formula guide
Use these debt to income calculator formulas to audit the output or explain it to someone else.
2 formulas
Debt to Income Calculator examples
Review a ready-made debt to income calculator scenario, copy it, then tweak inputs to match your case.
Example
Home loan affordability check
Inputs
- Example input Monthly debt: $900.00
- Example input Housing cost: $1,700.00
- Example input Gross income: $6,800.00
Outputs
- Example result Front-end DTI: 25%
- Example result Back-end DTI: 38.24%
- Example result Income after debt: $4,200.00
A manageable DTI does not guarantee approval, but it is one of the quickest ways to screen affordability before applying.
DTI by income level
| Gross income | Front-end DTI | Back-end DTI |
|---|---|---|
| $4,960.00 | 30.24% | 43.35% |
| $6,200.00 | 24.19% | 34.68% |
| $7,440.00 | 20.16% | 28.9% |
| $8,680.00 | 17.28% | 24.77% |
Lenders can use different rules, but DTI remains a useful first-pass affordability check before you apply.
Back-end DTI by income
Focus point
$4,960.00
43.35%
Position
#1 of 4
Original order
Share of total
32.92%
Total: 131.69%
Lenders can use different rules, but DTI remains a useful first-pass affordability check before you apply.
References
- Mortgage underwriting debt-to-income basics
- Personal finance affordability ratios
Learn more
Guides connected to the debt to income calculator
Use these short guides when you want the decision framework behind the numbers, not just the raw output.
Category guide
Financial Calculator Guide
Understand when to use payment, return, tax, and budgeting calculators so you can make cleaner money decisions.
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FAQ
Debt to Income Calculator FAQ
What does the Debt to Income Calculator do?
The Debt to Income Calculator helps you estimate front-end and back-end DTI ratios so you can gauge borrowing capacity and monthly affordability. Enter monthly debt, housing cost, and gross income to estimate front-end dti, back-end dti, and income after debt. The calculator updates instantly and adds a comparison table plus chart so you can test the sensitivity of the result before you use it in a decision. It is part of our financial toolkit.
What inputs do I need?
Typical inputs include Monthly debt payments excluding housing, such as loans and cards., Monthly housing payment including rent or mortgage-related cost., Gross monthly income used by lenders for DTI checks..
How are the results calculated?
We follow the formulas and assumptions outlined in the "How this calculator works" section. You will see outputs like Housing cost as a percentage of gross monthly income., Housing plus other debt as a percentage of gross monthly income., Gross monthly income left after housing and debt payments..
Can I share or download the results?
Use the Copy link or Print buttons to share your results. If a table or chart appears, you can download the data as CSV.
Is my data stored?
No. Calculations run in your browser and we do not store your inputs.
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