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Operational expenses may include all expenses essential to running a company. For manufacturing businesses, these are broken out separately from the cost of goods sold (COGS) so a gross margin can be cleanly calculated. For everyone else, understanding operating expenses is the foundation of understanding profitability — and hitting your essential KPIs.
Every business owner should understand how operating expenses affect the bottom line. Here's exactly what they are and how they work.
Operating expenses — often abbreviated as OPEX — must be distinguished from two other important categories: Capital Expenditures (CAPEX) and the direct Cost of Goods Sold (COGS). Those distinctions matter enormously for how expenses are reported, taxed, and managed.
Common operating expenses include:
Most entrepreneurs I work with don't have a clear picture of their operating expenses until we sit down and map them out. When you see the full list, two things usually happen: you find costs you forgot you were paying, and you find costs you can cut. Knowing your OPEX is step one to improving your margins.
Management constantly has to determine how to reduce operating expenses without compromising the ability to compete. Most businesses cannot avoid OPEX entirely — but the goal is to find the right balance. Reducing operating expenses can boost earnings and create a competitive advantage. Done recklessly, however, it can compromise quality and integrity.
Operating expenses appear on the income statement, which measures a company's profitability over time. Income statements typically break expenses into six categories:
- 1Cost of Goods Sold (COGS)Direct costs tied to producing or purchasing what you sell
- 2Selling, General & Administrative (SG&A)Salaries, marketing, office costs — the day-to-day overhead
- 3Depreciation & AmortizationThe gradual expensing of long-lived assets over time
- 4Other Operating ExpensesMiscellaneous costs tied to core business operations
- 5Interest ExpensesCosts of borrowing — not included when calculating operating income
- 6Income TaxesAlso excluded from operating income calculations
Note that interest expenses and income taxes appear on the income statement but are not included when calculating operating income — they're considered separately to give a cleaner view of core business performance.
This is one of the most commonly confused distinctions in business finance. Here's a simple way to think about it:
COGS is the total your business has paid for raw materials, packaging, and direct labor necessary to produce or sell the product. OPEX is what you pay regardless of sales volume. Both impact profitability — but they're tracked and managed differently.
Understanding this distinction is what separates entrepreneurs who know their numbers from those who don't. Gross margin (revenue minus COGS) tells you how profitable your product is. Operating profit tells you how profitable your whole business is. You need both to make smart decisions.
When examining a business's true performance, accountants often strip out non-operating expenses to remove the noise of financing decisions. This gives a cleaner picture of how well the core business actually operates.
CAPEX — Capital Expenditures — are investments made by a business for future use. Unlike operating expenses, which are consumed in the current period, capital expenditures create value over multiple years. They can be tangible or intangible:
Different types of capital assets fall into different IRS asset classes, each with a designated depreciation schedule. Getting this wrong has real tax implications — which is why most growing businesses work with an accountant to classify expenditures correctly.
The OPEX vs. CAPEX distinction matters a lot when it comes to cash flow planning. A $100K equipment purchase doesn't hit your P&L like a $100K payroll expense — and that affects how you should be forecasting and budgeting. Make sure your bookkeeper or CFO is classifying these correctly.
Here's the quick recap on operating expenses and how they relate to the other major expense categories:
- 1Operating Expenses (OPEX) include rent, equipment, inventory costs, marketing, payroll, insurance, and R&D — the cost of running the business daily. Tax-deductible when the business is profitable.
- 2Non-Operating Expenses are unrelated to core operations — interest charges, borrowing costs, asset disposal losses. Not considered when calculating operating income.
- 3Capital Expenditures (CAPEX) are investments in long-lived assets — machinery, property, IP. Cannot be written off immediately; must be capitalized per IRS guidelines.
Understanding your operating expenses isn't just a finance exercise — it's a competitive advantage. When you know exactly where your money goes, you can make smarter decisions about where to cut, where to invest, and how to scale. The next step is putting that knowledge to work.
Know Your Numbers.
Scale Your Business.
2X helps 6 and 7-figure entrepreneurs get clear on their financials, build the right systems, and grow faster with more time freedom. Understanding your expenses is step one — let's build from there.
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