What is the correct way to measure operating margin and how is it calculated?

What is the correct way to measure operating margin and how is it calculated?

• A. Cash flow divided by revenue.
• B. Net income divided by revenue.
• C. Operating revenue minus taxes divided by revenue.
• D. Operating profit divided by revenue; measures efficiency of core business operations.

Answer: (D)

Operating margin shows how efficiently a company turns revenue into profit from its ongoing, day-to-day operations. It uses operating profit (also called operating income or EBIT), which is revenue minus the costs directly tied to running the business—such as cost of goods sold and operating expenses—before interest and taxes. So the margin is calculated as operating profit divided by revenue. This tells you what portion of every dollar of revenue remains after covering the core operating costs, reflecting the effectiveness of the core activities. Cash flow divided by revenue looks at liquidity, not operating profitability. Net income divided by revenue includes interest and tax effects, not just operating performance. Subtracting taxes from operating revenue isn’t a standard profitability measure and mixes different concepts.

Operating margin shows how efficiently a company turns revenue into profit from its ongoing, day-to-day operations. It uses operating profit (also called operating income or EBIT), which is revenue minus the costs directly tied to running the business—such as cost of goods sold and operating expenses—before interest and taxes. So the margin is calculated as operating profit divided by revenue. This tells you what portion of every dollar of revenue remains after covering the core operating costs, reflecting the effectiveness of the core activities.

Cash flow divided by revenue looks at liquidity, not operating profitability. Net income divided by revenue includes interest and tax effects, not just operating performance. Subtracting taxes from operating revenue isn’t a standard profitability measure and mixes different concepts.