Gross Margin and Operating Leverage: Key Factors for Analyzing Profitability and Operating Risk in M&A

Assessing a company's profitability and operating risk is a key step in any merger or acquisition (M&A) process.To do so, a solid understanding of concepts like gross margin and operating leverage is essential. These metrics not only offer a clear snapshot of the business but also help anticipate how it will respond to changes in the market or in its sales.

In this article, we explore what these concepts are, how they are calculated, and why they are so relevant when analyzing an M&A deal.

What is Gross Margin?

Gross margin is one of the most widely used financial indicators to measure a company’s basic profitability. It shows what percentage of revenue remains after covering the direct costs associated with producing or purchasing the goods and services sold — known as cost of goods sold (COGS).

The formula for gross margin is simple:

Gross Margin = (Revenue – COGS) / Revenue

For example, if a small company that produces custom t-shirts generates €100,000 in revenue and incurs €60,000 in direct costs (fabrics, printing, shipping), its gross margin will be 40%.

A high gross margin often indicates pricing power, product differentiation, or efficient cost control. Conversely, a low margin may be typical in sectors such as retail or food, but it can also signal competitive pressure or operational inefficiency.

What is Operating Leverage?

Operating leverage measures how operating profit changes in response to variations in sales, depending on the company’s cost structure.

If a company has high fixed costs (salaries, rent, technology) and relatively low variable costs, it has high operating leverage. This means that an increase in sales can lead to a sharp rise in profits, since fixed costs are already covered. But the same effect occurs in reverse: if sales drop, losses can quickly escalate.

On the other hand, a company with a higher proportion of variable costs has low operating leverage. This allows it to better adapt to revenue declines, though it limits profit growth during expansion phases.

Therefore, operating leverage defines the balance between risk and potential profitability. The higher it is, the more exposed the business is to economic cycles.

Examples of Gross Margin and Operating Leverage Combinations

To better understand how these two metrics interact, let’s look at four common scenarios:

High Operating Leverage + High Gross Margin
Example: A SaaS (software-as-a-service) company.
It has high fixed costs (team, servers, development) but also a high gross margin. As it scales its customer base, profits grow rapidly. If sales drop, the negative impact is significant.
High Operating Leverage + Low Gross Margin
Example: Airlines.
They have massive fixed costs (aircraft, licenses, personnel) and thin margins. These businesses are highly sensitive to economic downturns.
Low Operating Leverage + High Gross Margin
Example: A financial advisory firm.
Costs are flexible — they can outsource or scale staff based on workload — and fees allow for a solid margin.
Low Operating Leverage + Low Gross Margin
Example: A small neighborhood retailer.
It has moderate fixed costs and high variable costs. This gives it agility to adjust to sales drops, though each product generates a small margin.

These examples show how the same change in sales can have very different effects on profits, depending on the business model.

Why Are They Key in M&A?

During a merger or acquisition process, analyzing gross margin and operating leverage is essential to:

Identify the company’s ability to generate sustainable profits.
Assess operational risk, especially if sales forecasts are not met.
Detect potential synergies post-acquisition — for instance, improving a low-margin business by leveraging the buyer’s purchasing power or cost structure.

Understanding how these metrics work together helps better evaluate the growth potential and inherent risk of the deal.