What is cost structure?

Cost structure refers to the composition of a business's costs, including the proportion of fixed versus variable costs and the major cost categories. For professional service firms, cost structure is typically heavily weighted toward labor, affecting operating leverage and break-even characteristics.

Key characteristics

• Composition of business costs

• Fixed versus variable proportion

• Major cost categories identified

• Affects operating leverage

• Influences the break-even point

• Should be understood and managed

Why it matters for professional service firms

Cost structure determines how the business responds to revenue changes. High fixed costs mean high risk but high reward from growth. Professional service firms typically have high fixed labor costs, making utilization critical. Understanding cost structure enables appropriate risk management and planning.

Real-world example

Tom's firm had not analyzed the cost structure. Cost structure analysis: 72% fixed costs (salaries, rent, software), 28% variable (contractors, direct expenses). High fixed cost structure meant: high utilization critical (under 70% meant losses), revenue growth dropped significantly to the bottom line (operating leverage), but revenue decline hurt quickly. Strategic implications: maintain utilization focus, be cautious when adding fixed costs, and use contractors for variable capacity. Cost structure awareness informed decision-making during subsequent revenue fluctuation.