What is bank line utilization?

Bank line utilization measures the percentage of an available credit line currently in use, calculated by dividing the outstanding balance by the total credit limit. For professional service firms with lines of credit, monitoring utilization helps manage both cash flow and lender relationships. High utilization may signal cash stress and can trigger lender concerns, while very low utilization may indicate unnecessary borrowing costs.

Key characteristics

• Percentage of the credit line currently borrowed

• Calculated as outstanding balance divided by limit

• High utilization may concern lenders

• Very low utilization has carrying costs without benefit

• Should be monitored as part of cash management

• Optimal range depends on the firm's needs and terms

Why it matters for professional service firms

Bank line utilization signals financial health to lenders and affects future borrowing capacity. Consistently high utilization (over 80%) suggests reliance on debt and may trigger covenant concerns or limit additional borrowing when needed. Very low utilization means paying commitment fees for unused capacity. Professional service firms should manage line utilization strategically: maintaining headroom for unexpected needs while not carrying excess unused capacity.

Real-world example

Kevin's firm had a $200K line of credit with average utilization of 85% ($170K). The lender expressed concern about high utilization and limited willingness to increase the line when requested. Analysis: The firm was using the line for predictable seasonal needs, not emergencies. Solution: established a separate term loan for predictable seasonal financing ($100K), reducing line utilization to 35% average. Result: lender relationship improved, line capacity available for true needs, and total borrowing cost actually decreased due to lower line fees on reduced commitment.