What is Cogs?

COGS (Cost of Goods Sold) represents the direct costs attributable to producing the goods or services sold by a company. For professional service firms, the COGS equivalent is often called Cost of Services and primarily includes direct labor costs of billable staff plus any direct project expenses.

Key characteristics

• Direct costs of service delivery

• Primarily labor for service firms

• Includes direct project expenses

• Subtracted from revenue for gross profit

• Variable with revenue volume

• Foundation for margin analysis

Why it matters for professional service firms

COGS determines gross margin, the first level of profitability. Understanding the cost of delivering services is essential for pricing and efficiency decisions. Professional service firms should track COGS (cost of services) separately from overhead to understand delivery economics and gross margin by service or client.

Real-world example

Amanda's income statement showed revenue and total expenses, but did not distinguish between COGS and other expenses. Restructuring financials: identified direct costs (consultant salaries, contractor costs, direct project expenses) as COGS at $1.8M on $3M revenue. Gross profit: $1.2M (40% margin). Overhead: $800K. Net income: $400K (13.3% margin). This visibility revealed that gross margin varied significantly by service line (28% to 52%), suggesting pricing or efficiency issues in the lower-margin services. COGS analysis enabled targeted improvement.