Operating Expenses (OpEx)

What Are Operating Expenses?

Operating expenses cover everything it costs to run your business beyond the direct cost of making or buying what you sell. While cost of goods sold covers production costs, operating expenses cover the infrastructure and activities that support the business. Common categories include selling expenses (marketing, sales commissions), general and administrative expenses (rent, utilities, office staff), and research and development.

For a software company, COGS might include server costs and developer salaries for building the product, while OpEx includes the sales team, marketing campaigns, office rent, and customer support staff.

Why It Matters for Your Business

Managing operating expenses is key to improving profitability and building a sustainable business.

• Profitability lever: Even with strong gross margins, excessive operating expenses can eat away all your profit. Controlling OpEx is often the quickest path to better profitability.
• Scalability indicator: As your business grows, operating expenses should ideally grow more slowly than revenue. This operating leverage means each additional dollar of revenue drops more profit to the bottom line.
• Budget management: Categorizing and tracking OpEx helps you build accurate budgets and identify where spending is growing faster than expected.

Reviewing operating expenses regularly helps you find opportunities to cut waste, renegotiate contracts, or invest more in high-return areas like marketing that directly drives revenue growth.