Formula
How to Calculate Operating Margin
Revenue minus operating expenses expressed as a percentage of revenue.
Operating Margin
Operating Margin = Operating Income / Revenue x 100%
Where
- Operating Income
- = Revenue minus COGS minus operating expenses
- Revenue
- = Total revenue
What Is Operating Margin?
Operating margin is the percentage of revenue remaining after deducting operating expenses — including cost of goods sold, sales and marketing, R&D, and general and administrative costs — but before interest and taxes. It measures how efficiently a company converts revenue into operating profit and is a key indicator of business model quality and scalability. For high-growth startups, operating margin is often negative during the investment phase, but investors track its trajectory to assess the path to profitability.
Worked Example
A mid-stage SaaS company called RevenueStack generates $30M in annual revenue. Their cost structure breaks down as follows: COGS of $6M (hosting, support, customer success), R&D of $9M (engineering and product teams), sales and marketing of $10M, and G&A of $3M (finance, legal, HR, office). Total operating expenses are $28M, yielding an operating income of $2M and an operating margin of 6.7%. While barely profitable, this represents significant improvement from the prior year's -15% operating margin. Their board and investors track the trajectory closely: at the current rate of improvement, RevenueStack is projected to reach 20% operating margins at $60M ARR as fixed costs are spread across a larger revenue base.
Why Operating Margin Matters
Operating margin matters because it measures a company's ability to generate profit from its core business operations. While revenue growth captures the top-line story, operating margin reveals whether that growth is translating into sustainable profitability. A company growing 100% year-over-year with -80% operating margins is burning cash at an alarming rate; the same growth with -20% margins tells a very different story about the path to profitability. For investors, operating margin trajectory is one of the most important metrics for growth-stage and late-stage companies. The ability to demonstrate improving operating margins while maintaining strong growth — often called the "Rule of 40" (growth rate + operating margin should exceed 40%) — is the gold standard that commands premium valuations in both private and public markets.
Related Terms
Frequently Asked Questions
How do you calculate Operating Margin?
Operating Margin is calculated using the formula: Operating Margin = Operating Income / Revenue x 100%. Revenue minus operating expenses expressed as a percentage of revenue.
What is a good Operating Margin?
What constitutes a "good" Operating Margin depends on context — the fund's stage, vintage year, and strategy. Check our benchmarks and calculators for specific ranges.