Operating Expenses vs Non-Operating Expenses Explained — Understanding the cost structure of a business

Operating expenses (OpEx) are the ongoing costs a company incurs to run its core business operations — excluding the direct costs of producing goods or services (which are classified as COGS). These are the expenses that keep the lights on, pay the employees, and support the business infrastructure.

Operating expenses are critical to analyze because they reveal how efficiently a company manages its overhead. Two companies with the same gross profit can have very different operating margins depending on how much they spend on sales, marketing, administration, and research. The company that spends less to generate the same revenue has a competitive advantage.

Operating expenses are reported on the income statement between gross profit and operating income (EBIT). They are sometimes broken into sub-categories like SG&A, R&D, and D&A, though the level of detail varies by company. The US stocks page on Worldtickers provides detailed income statement data including operating expense breakdowns.

Selling, General & Administrative (SG&A)

SG&A is the broadest category of operating expenses and typically the largest. It includes:

• Selling expenses: Sales commissions, advertising, marketing campaigns, trade show costs, customer acquisition costs
• General expenses: Office rent, utilities, office supplies, insurance, legal fees, accounting fees
• Administrative expenses: Salaries of executives, HR, finance, IT, and other non-production staff; employee benefits and payroll taxes

Research & Development (R&D)

R&D includes all costs associated with developing new products, services, or processes. For technology and pharmaceutical companies, R&D is the lifeblood of future growth. Key components include:

• Salaries of engineers, scientists, and product developers
• Laboratory equipment and supplies
• Clinical trial costs (for pharmaceutical companies)
• Prototyping and testing expenses
• Software development costs (for technology companies)

Depreciation & Amortization (D&A)

Depreciation spreads the cost of tangible fixed assets (buildings, machinery, vehicles) over their useful lives. Amortization does the same for intangible assets (patents, software, goodwill). D&A is a non-cash expense — no money leaves the company when it is recorded — but it represents the real economic cost of using up long-term assets. Capital-intensive businesses (manufacturing, airlines, utilities) have high D&A charges.

Non-operating expenses (and income) are items that are not related to a company's core business operations. They appear below operating income on the income statement and include:

Interest Expense

Interest expense is the cost of borrowing money. Companies with significant debt — either from bonds issued or bank loans — must pay interest regularly. A high interest expense relative to operating income indicates high financial leverage; such companies are more vulnerable to economic downturns or rising interest rates. As a rule of thumb, interest coverage ratio (operating income / interest expense) below 2-3x is a warning sign.

Foreign Exchange Gains/Losses

Companies that operate internationally are exposed to currency fluctuations. When the company holds assets, liabilities, or receivables in foreign currencies, changes in exchange rates create gains or losses. These are non-operating because they result from currency movements, not from the company's core business. A company with strong operations can show a net loss simply because of adverse forex movements — and vice versa.

Extraordinary / Exceptional Items

These are significant, one-time events that are not expected to recur:

• Restructuring charges (layoffs, plant closures)
• Asset impairment write-downs (goodwill, property, equipment)
• Gains or losses from selling subsidiaries or divisions
• Legal settlement costs or damages
• Natural disaster losses not covered by insurance
• Tax penalties or one-time tax benefits

When evaluating a company's sustainable earnings, always exclude extraordinary items. They distort the true picture of operating performance. A company may report a net loss due to a one-time restructuring charge while its core business is actually healthy.

Operating Margin

Operating margin measures how much profit a company generates from each dollar of revenue after paying both COGS and operating expenses. It is one of the most important indicators of management efficiency and competitive advantage. A company with high and stable operating margins can withstand competitive pressure and economic downturns better than a company with thin margins.

Operating margin trends are revealing. A rising operating margin suggests the company is gaining operating leverage — its costs are growing slower than revenue. A falling operating margin suggests costs are growing faster than revenue, which is unsustainable in the long run.

EBITDA

EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) is a widely used proxy for operating cash flow. By adding back D&A, it removes the impact of asset-intensive industries' accounting costs, making comparisons more meaningful across companies with different capital structures.

However, EBITDA has important limitations. It ignores the real cost of maintaining and replacing fixed assets. A manufacturing company with $100 million in EBITDA but $80 million in required capital expenditures is less profitable than a software company with $100 million in EBITDA and $10 million in capex — even though their EBITDA is identical. Always check free cash flow alongside EBITDA.

One-time (or non-recurring) items can dramatically distort a company's reported earnings. Identifying and excluding them is essential for understanding sustainable profitability.

Red Flags to Watch For

• Restructuring charges every year: A company that announces restructuring year after year is not really restructuring — these are recurring operating expenses being disguised as one-time items
• Large goodwill impairments: Often indicates the company overpaid for an acquisition and is now writing it down. Multiple impairments suggest poor capital allocation
• Asset sale gains: Selling a building or division to boost reported profit. If operating income is declining but net income is rising due to asset sales, the core business is weakening
• Pension settlement charges: One-time costs from modifying employee pension plans. These can be large but don't reflect current operations
• Tax adjustments: Changes in tax laws or deferred tax asset valuations can create large one-time tax benefits or charges

How to Find Them

• Look for line items labeled “exceptional items,” “extraordinary items,” or “non-recurring charges” on the income statement
• Read the notes to accounts — they provide detailed explanations of each unusual item
• Compare operating income to net income trends over 5 years. Divergence between the two often signals one-time items distorting net income
• Check management's discussion & analysis (MD&A) in quarterly and annual reports for explanations of unusual items

A useful technique is to calculate “adjusted net income” by removing all one-time items. Compare this adjusted figure to reported net income. If they diverge significantly and frequently, management may be using one-time items to manipulate earnings.

Operating expenses can be classified as fixed or variable, and this distinction has important implications for business risk and profitability.

Fixed Operating Costs

Fixed costs do not change with the level of production or sales. Examples include office rent, executive salaries, insurance premiums, and depreciation. A company with high fixed costs has high operating leverage — meaning profits are more sensitive to changes in revenue. In good times, high operating leverage magnifies profits. In bad times, it magnifies losses. Airlines, hotels, and manufacturers are classic high-fixed-cost businesses.

Variable Operating Costs

Variable costs change in proportion to business activity. Examples include sales commissions (more sales = more commissions), shipping costs, and transaction processing fees. Companies with mostly variable costs have lower operating leverage — their profits are more stable but they have less upside leverage when revenue grows. Software companies often have mostly fixed costs (salaries, servers) and can scale revenue without proportional cost increases.

Operating Leverage Analysis

Degree of Operating Leverage (DOL) measures how sensitive operating income is to changes in revenue:

A DOL of 3 means that for every 1% increase in revenue, operating income grows by 3%. This is powerful during growth but dangerous during downturns. Understanding a company's cost structure helps you assess its risk profile and predict how profits will respond to changing market conditions. You can analyze operating leverage for any stock using the income statement data on our US stocks page.

Understanding the difference between operating and non-operating expenses helps you see through the noise and focus on what matters: the profitability of the core business. Use our stock data to access detailed income statements, our screener to compare operating margins across companies, and build your watchlist of efficiently-run businesses. This content is educational and does not constitute financial advice.