Debt-to-Income Ratio Calculator - Calculator See


Debt-to-Income Ratio Calculator

Calculate your front-end and back-end debt-to-income (DTI) ratios to check mortgage loan qualification status.

Calculator Inputs

$
Before-tax monthly income.
$
Principal, interest, taxes, insurance.
$
Car financing.
$
Other recurring monthly debt.

Calculated Results

Back-End DTI Ratio
32.50% (Excellent Qualification)
Front-End Housing DTI 22.50%
Total Monthly Debt Payments $2,600.00 / mo
Gross Monthly Household Income $8,000.00 / mo
Values calculate live as you adjust inputs.

About Debt-to-Income Ratio Calculator

Evaluates borrower leverage by dividing recurring monthly debt obligations by gross monthly income.

What is Debt-to-Income Ratio Calculator?

Evaluates borrower leverage by dividing recurring monthly debt obligations by gross monthly income.

How to Use This Calculator

  1. Enter gross monthly income.
  2. Enter prospective housing payment.
  3. Enter auto, student loan, and credit card payments.
  4. Check front-end and back-end DTI against lender approval limits.

The Mathematical Formula & Variables

DTI % = (Monthly Debt Obligations / Gross Monthly Income) * 100%

Step-by-Step Worked Example

Scenario: $8,000 income: $1,800 housing + $450 car + $350 student loans ($2,600 total debts).

  1. Front-end = 1,800 / 8,000 = 22.5%.
  2. Back-end = 2,600 / 8,000 = 32.5%.
  3. Both well below standard 28/36 underwriting limits.

Result: 32.50% Back-End DTI

Frequently Asked Questions

What is the maximum allowed DTI for a mortgage?

Conventional conforming loans generally cap back-end DTI at 43% to 45%, while FHA loans can accept up to 50% with compensating factors.