What Is Debt-to-Income Ratio? | Business Lending Glossary
Debt-to-income ratio (DTI) explained for business borrowers — how it is calculated, what lenders look for, and how to improve it.
Definition
Total monthly debt payments divided by gross monthly income, expressed as a percentage, used to assess a borrower's repayment capacity.
Explanation
DTI measures how much of a borrower's income is already committed to existing debt obligations. Lenders use it alongside credit score and cash flow analysis to gauge whether a borrower can absorb new debt payments. For business lending, lenders may calculate both a personal DTI (for owner guarantors) and a business-level version analogous to debt service coverage ratio.
Example
A business owner has $3,000 in monthly personal debt payments against $10,000 in gross monthly personal income, producing a DTI of 30%, which most conventional lenders consider acceptable.
Why It Matters
A high DTI signals that a borrower is already stretched thin, which can lead to higher rates, lower loan amounts, or outright declines from lenders.
Frequently asked questions
What DTI do lenders prefer?
Most conventional lenders prefer a personal DTI below 43%, while SBA guidelines typically require borrowers to demonstrate sufficient income after all obligations.
