What is the operating efficiency ratio?

Operating efficiency ratio measures operating expenses as a percentage of revenue, indicating how efficiently the firm converts revenue into operating income. For professional service firms, this ratio reveals whether the cost structure is appropriate and improving over time, with lower ratios indicating better efficiency.

Key characteristics

• Operating expenses divided by revenue

• A lower ratio indicates better efficiency

• Should be tracked and trended

• Compared to benchmarks

• Affected by both costs and revenue

• Foundation for efficiency improvement

Why it matters for professional service firms

The operating efficiency ratio shows how much of each revenue dollar goes to operating costs versus profit. A firm with 75% operating efficiency ratio keeps $0.25 of each revenue dollar as operating profit. Professional service firms should track this ratio, benchmark to peers, and drive improvement through both revenue growth and cost management.

Real-world example

Tom's firm had an operating efficiency ratio of 78% (22% operating margin). Benchmark: 72% ratio (28% margin). Gap: 6 percentage points costing approximately $150K on $2.5M revenue. Analysis: admin costs 3 points above benchmark, occupancy 2 points above, technology 1 point above. Actions: admin process automation (reduced 1.5 points), sublease excess space (reduced 1 point), technology consolidation (reduced 0.5 points). Result: ratio improved to 75% (3 points), adding $75K to operating income. The efficiency ratio focus drove specific improvement actions.