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.

Monthly debtMonthly debt payments excluding housing, such as loans and cards.Housing costMonthly housing payment including rent or mortgage-related cost.Gross incomeGross monthly income used by lenders for DTI checks.

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.

How this 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 straight to the section you need, then return to the calculator.

Inputs Outputs Assumptions Tips Formulas Examples Reference table Visual breakdown References

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.

Formula guide

Use these formulas to audit the output or explain it to someone else.

2 formulas

Front-End DTI = Housing Cost ÷ Gross Income × 100

Back-End DTI = (Housing Cost + Monthly Debt) ÷ Gross Income × 100

Usage examples

Review a ready-made scenario, copy it, then tweak inputs to match your case.

Example

3 inputs3 outputs

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

4 of 4 rows

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

Highest: $4,960.00 (43.35%)Lowest: $8,680.00 (24.77%)

Sort

Gross incomeBack-end DTI

Focus point

$4,960.00

43.35%

Position

#1 of 4

Original order

Share of total

32.92%

Total: 131.69%

PositiveNegative

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

FAQ

Common questions

What does the Debt to Income Calculator do?

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..