Operating margin

Operating margin, also known as EBIT margin, measures profit from core operations as a share of revenue. It strips out both the direct costs of making goods or services (COGS) and the indirect costs of running the business. These indirect costs include sales, marketing, R&D, and admin. Interest and taxes are left out because they stem from financing and tax choices, not day-to-day operations.

Operating margin is the best single metric for comparing how well businesses run their core operations. It works even when companies have different capital structures or sit in different tax regions. A company funded entirely by equity and one funded with heavy debt will post different net margins. But their operating margins will match if their operations run equally well.

For SaaS companies, operating margin is a key planning metric. It shows whether the business achieves operating leverage by growing revenue faster than costs. Early-stage SaaS companies often post negative operating margins as they invest heavily in growth. As the company scales, margins should rise because fixed costs spread across a larger revenue base.

Operating Margin = Operating Income / Revenue x 100

Operating expenses cover sales and marketing, research and development, and general and admin costs. Operating income is sometimes called EBIT (earnings before interest and taxes). Minor differences can arise depending on whether non-operating items are included.

The tree shows that operating margin is the gap between gross margin and the operating expense ratio. A company with 75% gross margin and 60% operating expense ratio has a 15% operating margin. To improve it, you either expand gross margin or cut operating expenses as a share of revenue.

For most SaaS companies, gross margin is already high (70-85%) and fairly stable. The main path to better operating margin is operating leverage: grow revenue while keeping expense growth below revenue growth. Each percentage point of revenue growth not matched by expense growth flows straight to operating margin.

1. 1

   Improve sales efficiency

   S&M is often the largest operating expense. Better CAC payback, higher sales output, and a shift toward product-led growth all shrink S&M as a share of revenue.

2. 2

   Scale R&D through platform investment

   Invest in platforms and tooling that let engineering teams build more with the same headcount. R&D as a share of revenue should drop as the product matures.

3. 3

   Automate G&A functions

   Finance, legal, HR, and admin tasks can be heavily automated. Modern tools cut the need for headcount growth in these areas as the company scales.

4. 4

   Monitor operating expense ratios monthly

   Track each operating expense category as a percentage of revenue monthly. This provides early warning when any category is growing faster than revenue.

1. 1

   Confusing operating margin with EBITDA margin

   Operating margin includes depreciation and amortisation, while EBITDA margin does not. For asset-heavy businesses, the difference can be significant.

2. 2

   Cutting operating expenses to hit short-term margin targets

   Cutting R&D or marketing spend lifts operating margin right away but may hurt future growth. Margin should improve through leverage, not by starving the business of investment.