What Is the Debt-to-Income (DTI) Calculator?
A debt-to-income calculator quantifies the percentage of gross monthly earnings committed toward servicing debts.
How Does the Debt-to-Income (DTI) Calculator Work?
Divides monthly required debt service payments by gross pre-tax income to assess borrowing capacity.
Debt-to-Income (DTI) Calculator Formula & Variables
The core mathematical equation utilized by this calculator is expressed as:
Front-End DTI = (Housing ÷ Gross Income) × 100; Back-End DTI = (Total Debts ÷ Gross Income) × 100
Evaluates monthly debt service burdens relative to gross pre-tax income for mortgage underwriting.
How to Use the Debt-to-Income (DTI) Calculator
- Enter gross pre-tax monthly income, proposed housing costs, and minimum monthly recurring debt payments.
Step-by-Step Example Calculation
$7,500 Gross Income with $1,800 Housing & $600 Debts
Input Values:
grossMonthlyIncome:7500
monthlyHousing:1800
monthlyOtherDebts:600
Worked Steps: Results in a 24.0% front-end DTI and 32.0% back-end DTI (categorized as Excellent).
Understanding Your Result
Displays front-end ratio, back-end ratio, total debt dollars, and lending qualification risk tier.
Factors That Affect the Result
- Credit score, down payment size, employment history, and student loan repayment plans.
When Should You Use This Calculator?
- Preparing to apply for a mortgage, refinancing existing property, and evaluating overall financial health.
Assumptions & Limitations
- Calculations do not include discretionary living expenses or voluntary investments.
Frequently Asked Questions
Calculation Accuracy & Reference Note
Standard consumer credit and Fannie Mae / Freddie Mac underwriting formulas.