What is the operating margin?Margin?

Operating MarginMargin is the percentage of revenue remaining after deducting operating expenses but before interest and taxes. For a consulting firm with $2.5M in revenue and $1.8M in operating costs (salaries, rent, software), the operating MarginMargin is 28% ($700K ÷ $2.5M). This shows profitability from core business operations.

Key characteristics of operating Margin:

• Excludes interest, taxes, and non-operating items

• Focuses on operational efficiency

• Expressed as a percentage of revenue

• Higher percentages indicate better operational control

• Consulting firms typically target 20-35% operating margins

• More stable than net MarginMargin across quarters

Why operating margin matters for service firms

Operating Margin isolates business performance from financing and tax decisions. A consulting firm can have a substantial operating Margin (32%) but a lower net Margin (18%) due to debt payments. Founders use this to evaluate operational efficiency without interference from tax structures. When operating margin declines, it signals operational problems requiring immediate action.

Operating Margin: Margin in action: real consulting firm example

Apex Advisory has $3.2M revenue. Operating expenses: $2.1M (salaries $1.6M, rent $180K, software $140K, marketing $180K). Operating income: $1.1M. Operating margin: 34%. Interest on line of credit: $45K. Taxes: $245K. Net income: $810K (25% net margin). The 9% gap between operating and net MarginMargin is due to financing and taxes. The founder focuses on the 34% operating margin, which has remained stable for 18 months.