What is gross margin variance?

Gross margin variance measures the difference between actual and expected gross margin, and the analysis identifies whether the variance stems from revenue, cost, or mix changes. For professional service firms, gross margin variance analysis reveals why profitability differs from expectations, enabling targeted improvement actions.

Key characteristics

• Measures actual versus expected gross margin

• Identifies revenue, cost, and mix components

• Explains profitability changes

• Enables targeted improvement actions

• Should be analyzed monthly

• Key management information

Why it matters for professional service firms

Gross margin variance tells you why profitability changed. A revenue increase with a margin decline suggests pricing or cost issues. Cost decrease with margin improvement confirms efficiency gains. A mix shift toward lower-margin work requires a different response than pricing erosion. Professional service firms should analyze gross margin variance monthly, understand its drivers, and take appropriate action.

Real-world example

Rachel's firm's budgeted gross margin was 58%; actual was 54%, resulting in a 4-point unfavorable variance of $120K on $3M in revenue. Variance analysis: volume variance favorable $45K (more revenue than expected), rate variance unfavorable $85K (lower average billing rate), cost variance unfavorable $80K (higher direct costs than budget). Root causes: won a large project at a discounted rate (rate variance), which required expensive subcontractors (cost variance). Actions for the future: evaluate whether discounted large projects generate sufficient profit despite lower margins, or tighten the discount policy.