The metric lenders care about most when evaluating whether a business can take on (or already supports) its debt load. A weak ratio limits financing options; a strong one opens them.

Definition

Debt-to-Income Ratio (DSCR for businesses) - a ratio comparing debt service (loan payments) to income, indicating how much of business income is consumed by debt obligations. For businesses, commonly expressed as Debt Service Coverage Ratio (DSCR).

Formula
DSCR = Net Operating Income ÷ Total Debt Service

Example: $200K Net Operating Income, $120K annual debt service. DSCR = $200K ÷ $120K = 1.67.

Common uses

  • Lender underwriting - banks require minimum DSCR for loan approval
  • Capital structure planning - how much debt the business can sustainably carry
  • Financial health assessment - a key liquidity indicator

Watch out

DSCR uses operating income, not cash flow. A business with strong DSCR but weak cash conversion (lots of working capital tied up) can still struggle to service debt in practice.