Advertisement · 728×90
Income & Debt Inputs
Monthly Gross Income $6,000
$
Other Monthly Income $1,500
$
Monthly Rent or Mortgage $1,850
$
Taxes + Insurance + HOA $550
$
Vehicle + Student + Personal Loans $650
$
Credit Cards + Other Obligations $350
$
Target Front-End Limit 28.00%
%
Target Back-End Limit 36.00%
%
Stretch Back-End Limit 43.00%
%
Pending New Monthly Debt $0
$
Start Date
📅
Assumption: all entries are monthly dollar amounts except the guideline percentage thresholds. Front-end uses housing only, and back-end includes housing plus all other recurring debts.
Front-End Ratio
-
housing costs / total income
Back-End Ratio
-
housing + debts / total income
Total Income
-
monthly qualifying income
Housing Costs
-
front-end debt subtotal
Total Obligations
-
back-end debt subtotal
Risk Signal
-
based on lender-style thresholds
DTI Breakdown
Live
Front-End
Back-End
Income / Debt Split
Debt Summary
| Period | Income | Housing | Other Debt | Back-End Ratio |
|---|---|---|---|---|
| Enter income and debt details above to see the breakdown | ||||
Advertisement · 336×280
How This DTI Ratio Calculator Works
This calculator estimates the two debt-to-income ratios most lenders care about. The front-end ratio focuses on housing costs only. The back-end ratio includes housing costs plus your other recurring monthly debt payments.
Core Formulas
Total Income = Gross Income + Other Monthly Income
Housing Costs = Rent or Mortgage + Taxes/Insurance/HOA
Front-End Ratio = Housing Costs / Total Income
Back-End Ratio = (Housing Costs + Other Debt Payments) / Total Income
Housing Costs = Rent or Mortgage + Taxes/Insurance/HOA
Front-End Ratio = Housing Costs / Total Income
Back-End Ratio = (Housing Costs + Other Debt Payments) / Total Income
What the Results Mean
- Front-End Ratio: the share of income used by housing costs only.
- Back-End Ratio: the share of income used by all recurring debt obligations.
- Total Income: combined monthly income used in the calculation.
- Total Obligations: housing plus all other recurring monthly debts.
- Risk Signal: a simple interpretation based on common guideline thresholds.
Disclaimer: These are planning estimates only. Real underwriting can include credit score,
reserves, compensating factors, taxes, non-borrowing household members, and lender-specific rules.
Frequently Asked Questions
What does this DTI calculator estimate?
+
It estimates your front-end and back-end debt-to-income ratios using your income, housing
costs, and recurring monthly debt obligations.
What is the front-end ratio?
+
The front-end ratio measures housing costs only, such as rent or mortgage plus taxes,
insurance, and HOA dues, compared with your monthly income.
What is the back-end ratio?
+
The back-end ratio includes your housing costs plus other recurring debts like car loans,
student loans, credit cards, and any pending new debt.
What DTI do lenders usually prefer?
+
Many lenders like to see a front-end ratio around 28% or lower and a back-end ratio around
36% or lower, though some loan programs allow higher limits with compensating factors.
Frontend vs Backend DTI
The two DTI measures answer different underwriting questions. Front-end looks at housing pressure by itself, while back-end shows your full monthly debt load relative to income.
| Feature | Front-End Ratio | Back-End Ratio |
|---|---|---|
| Includes housing payment | Yes | Yes |
| Includes other recurring debts | No | Yes |
| Primary use | Housing affordability | Total debt pressure |
| Typical benchmark | 28% or less | 36% or less |
| Loan-program flexibility | Sometimes | Often more important |