What Is Operating Income? Definition, Formula, and Example
By Markets & Investing DeskUpdated Nov 10, 2026
Definition
Operating income is the profit a company earns from its core business: revenue minus cost of goods sold and operating expenses, before interest, income taxes, and other non-operating items.
Key takeaways
- Interest expense is excluded because it reflects how a company is financed, not how well it operates.
- The shortcut of net income plus interest and taxes overstates operating income when non-operating gains exist.
- In the worked example, $150,000 of operating income on $1,000,000 of revenue gives a 15% operating margin.
- For a bank, interest income is core revenue, while for a manufacturer the same income is non-operating.
Operating income is the profit a company earns from its core business after subtracting the costs of running that business, but before interest, income taxes, and other non-operating items. It is calculated as revenue minus cost of goods sold (COGS) minus operating expenses such as selling, general and administrative (SG&A) costs, research and development, and depreciation and amortization. It is also called operating profit, operating earnings, or income from operations. It answers one question: how much money does the business itself make, regardless of how it is financed or taxed?
What operating income measures
Operations are the activities a company exists to perform. For a retailer, that means buying and selling merchandise. For a software company, it means developing and selling software. Operating income captures the results of those activities and leaves out everything else.
Two broad groups of costs are subtracted from revenue to reach it:
- Cost of goods sold. These are the direct costs of producing what the company sells: raw materials, direct labor, and the manufacturing overhead allocated to the units sold. See how COGS is calculated for the details.
- Operating expenses. These are the costs of running the business beyond production: salaries for sales and administrative staff, rent, marketing, research and development, utilities, and the depreciation and amortization of assets used in operations.
Interest expense is excluded because it reflects how the company is financed, not how well it operates. Two companies with identical stores and sales can have very different interest bills if one borrowed to build them and the other used shareholder equity. Income taxes depend on jurisdiction, tax planning, and credits. Investment gains, dividend income, and currency gains or losses come from outside the core business.
What remains is a measure that management directly controls through pricing, purchasing, staffing, and overhead decisions. Rising operating income means the company is growing revenue faster than costs or cutting costs faster than revenue falls.
Operating income formula
There are two common ways to calculate operating income. They should give the same answer when every input is classified the same way.
Top-down: starting from revenue
Operating income = Revenue − COGS − Operating expenses
Revenue minus COGS is gross profit, so the formula can also be written as:
Operating income = Gross profit − Operating expenses
Use net revenue (gross sales minus returns, discounts, and allowances) rather than gross sales. Many income statements fold depreciation and amortization into COGS or SG&A. Others show them as separate lines. If they appear separately, subtract them as well:
Operating income = Gross profit − Operating expenses − Depreciation − Amortization
Make sure not to subtract them twice when they are already included in another line.
Bottom-up: starting from net income
If you have net income and the items below operating income, you can work backward:
Operating income = Net income + Income tax expense + Interest expense − Non-operating income + Non-operating expenses
A shorter version, net income plus interest plus taxes, appears in many references. It equals operating income only when the company has no other non-operating items. A gain on an investment, for example, sits inside net income and must be removed, or the result overstates operating income.
Worked example
Figures for a hypothetical company, for one fiscal year:
| Line item | Amount |
|---|---|
| Gross sales | $1,050,000 |
| Returns and discounts | ($50,000) |
| Net revenue | $1,000,000 |
| Cost of goods sold | ($600,000) |
| Gross profit | $400,000 |
| Selling, general and administrative | ($180,000) |
| Research and development | ($40,000) |
| Depreciation and amortization | ($30,000) |
| Operating income | $150,000 |
| Interest expense | ($20,000) |
| Interest income | $5,000 |
| Gain on sale of investment | $10,000 |
| Pretax income | $145,000 |
| Income tax (assumed 21%) | ($30,450) |
| Net income | $114,550 |
Top-down: $1,000,000 − $600,000 − $180,000 − $40,000 − $30,000 = $150,000.
Bottom-up: $114,550 net income + $30,450 tax + $20,000 interest expense − $5,000 interest income − $10,000 investment gain = $150,000.
If you used only the shortcut (net income + interest expense + taxes), you would get $165,000. That $15,000 difference is the interest income and investment gain, which are real profits but not operating ones.
Operating margin: $150,000 ÷ $1,000,000 = 15%. For every dollar of sales, the company keeps 15 cents after covering production and running costs, before financing and taxes.
EBITDA: $150,000 + $30,000 depreciation and amortization = $180,000.
How operating income is used
Judging core profitability over time. Comparing operating income across fiscal quarters or years shows whether the business is becoming more or less profitable on its own terms. Changes in debt levels or tax rates do not distort it.
Comparing companies. Operating margin puts a large company and a small one on the same scale. Because financing is excluded, it also allows a fair comparison between a heavily indebted company and a debt-free competitor in the same industry. Margins differ widely by industry, so comparisons are most meaningful within a sector.
Spotting operating leverage. Companies with high fixed costs see operating income swing more than revenue. In the hypothetical example, suppose revenue rose 10% while SG&A, R&D, and depreciation stayed flat and COGS rose in proportion. Gross profit would grow by $40,000, and operating income would rise to $190,000, an increase of about 27%. The same mechanism works in reverse when sales fall.
Assessing debt capacity. Lenders and analysts compare operating income with interest expense (the interest coverage ratio) to judge whether a company earns enough from operations to service its debt. In the example, $150,000 of operating income covers $20,000 of interest 7.5 times.
Valuation. Operating income, or the closely related EBIT, feeds into valuation multiples such as enterprise value to EBIT. Because it is measured before interest, it pairs with enterprise value, which includes debt.
Operating income vs. related measures
Operating income vs. revenue
Revenue is the total brought in from sales before any costs. A company can grow revenue quickly while operating income shrinks if costs rise faster. Revenue shows how well a company sells. Operating income shows whether it sells profitably.
Operating income vs. gross profit
Gross profit deducts only COGS. Operating income also deducts overhead, selling costs, R&D, and depreciation. A company with a high gross margin can still post weak operating income if its sales and administrative costs are heavy.
Operating income vs. net income
Net income is the bottom line, after interest, taxes, and all non-operating items. Operating income is usually higher, because net income subtracts more. It is not always higher, though. Large non-operating gains, such as selling a subsidiary, can push net income above operating income.
Operating income vs. EBIT
EBIT is often treated as a synonym for operating income, and for many companies the figures are identical. But EBIT calculated as net income plus interest and taxes keeps any non-operating gains or losses, which operating income excludes. In the worked example, that is $165,000 of EBIT against $150,000 of operating income.
Operating income vs. EBITDA
EBITDA adds depreciation and amortization back to operating income or EBIT, so it is larger for any company with depreciable assets. Supporters use it to compare businesses with different asset ages or accounting for acquisitions. Critics point out that equipment wears out and has to be replaced, so depreciation reflects a real economic cost.
Non-operating income and expenses
Non-operating items come from activities outside the core business. Typical examples include:
- Interest earned on cash balances and interest paid on debt
- Dividend income from investments
- Gains or losses on the sale of investments or long-term assets
- Foreign exchange gains or losses on financial items
- Lawsuit settlements unrelated to normal operations
Classification depends on the business model. For a bank or lender, interest income is the core revenue and belongs in operating results. For a manufacturer, the same interest income is non-operating.
Where to find operating income
Operating income appears on the income statement, below gross profit and operating expenses and above interest, other income, and taxes, often labeled “income from operations” or “operating profit.” Large companies report it for the whole group, and many also break it out by business segment in the notes.
Some single-step income statements group all expenses together with no separate operating income line. In that case, calculate it top-down from the revenue and operating expense lines, or bottom-up from net income using the non-operating items disclosed.
Limitations
Accounting choices affect it. Depreciation methods, useful-life estimates, and inventory methods (such as FIFO vs. LIFO) all change reported operating expenses. Two otherwise identical companies can therefore report different operating income.
Classification varies. Companies have discretion over what counts as operating. Impairments, restructuring costs, and litigation charges may sit inside or outside operating expenses. Many companies also publish an “adjusted” operating income that removes items they consider unusual. These adjusted figures are non-GAAP measures defined by the company itself, so compare them with the reported figure.
It is not cash. Operating income is an accrual figure. It records revenue when earned and spreads asset costs over time through depreciation. A company can report solid operating income while collecting cash slowly or spending heavily on new equipment. Free cash flow captures those cash effects.
It ignores financing risk. Excluding interest makes companies easier to compare, but it also hides debt. A company with strong operating income and very large interest obligations can still lose money at the net income level.
FAQs
Can operating income be negative?
Yes. A negative figure, called an operating loss, means revenue did not cover production and operating costs for the period. Early-stage companies and businesses in a downturn often report one.
Is operating income the same as net operating income?
The term net operating income (NOI) is used mostly in real estate. There it means property revenue minus property operating expenses, excluding debt service, depreciation, and income taxes. Because NOI is measured before depreciation, it is not the same as a corporation's operating income.
The Bottom Line
Operating income helps investors, lenders, and analysts who want to judge how profitable a business is on its own terms, apart from debt and taxes. It works best for comparing companies within the same sector and for checking interest coverage. Because it depends on accounting choices, is not a cash figure, and hides debt, it should be read alongside net income, free cash flow, and the reported figure behind any adjusted version.
