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Coverage Ratio Formula

The coverage ratio measures a business's ability to cover debt payments with operating income. The most common metric is the debt-service coverage ratio (DSCR), calculated as Net Operating Income ÷ Total Debt Service. A ratio of 1.0 indicates income exactly covers payments; 1.25 or higher is considered healthy. Lenders use these ratios to assess loan repayment ability.

  • DSCR = Net Operating Income ÷ Total Debt Service
  • 1.25+ is considered healthy — provides a 25% safety cushion
  • Interest Coverage Ratio = EBIT ÷ Interest Expense
  • Fixed Charge Coverage Ratio is the most comprehensive — includes debt, leases, and preferred dividends
  • Calculate monthly or quarterly to track trends before applying for a loan

Coverage Ratio Formula

The primary formula is: DSCR = Net Operating Income ÷ Total Debt Service

Net Operating Income represents revenue minus operating expenses, excluding interest, taxes, depreciation, and amortization. It reflects cash flow available for debt service.

Total Debt Service includes principal payments, interest payments, and all debt obligations due within the period.

Calculation Example

A manufacturing company with $500,000 annual revenue and $350,000 operating expenses has $150,000 NOI. With $40,000 principal and $20,000 interest payments ($60,000 total debt service), the DSCR equals 2.5 — indicating excellent coverage.

Coverage Ratio Interpretation

  • 1.25+ (Excellent): Strong payment ability; lenders offer favorable rates.
  • 1.0–1.25 (Adequate): Coverage with minimal cushion; approval possible with higher rates or collateral requirements.
  • 0.8–1.0 (Risky): Insufficient income coverage; lender approval unlikely.
  • Below 0.8 (Critical): High default risk; immediate action required.

Types of Coverage Ratios

  1. Debt-Service Coverage Ratio: Measures ability to cover all debt payments; used for real estate and commercial loans.
  2. Interest Coverage Ratio: Measures interest-only payment ability; formula is EBIT ÷ Interest Expense.
  3. Fixed Charge Coverage Ratio: Most comprehensive; includes debt, leases, and preferred dividends.

How to Improve Your Coverage Ratio

  • Increase revenue through sales growth or new revenue streams.
  • Reduce operating expenses via cost cuts or efficiency improvements.
  • Refinance debt at lower rates to reduce total debt service.
  • Pay down principal using excess cash to shrink debt obligations.

Frequently asked questions

What's a good coverage ratio for a business loan?
Most lenders require 1.25 or higher, providing a 25% safety cushion. Higher ratios (1.5+) yield better rates.
How often should I calculate coverage ratio?
Calculate monthly or quarterly to track trends and identify declining cash flow before loan applications.
What's the difference between coverage ratio and current ratio?
Coverage ratio measures debt payment ability through income; current ratio measures short-term liability coverage using current assets.
Can I get a loan with a coverage ratio below 1.0?
Extremely unlikely, as it demonstrates inability to cover payments. Focus on improving cash flow or reducing debt first.

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