How to read margins

Margins are one of the simplest ways to understand how well a business turns sales into profit. Revenue tells you how much money a company brings in, but margins tell you how much of that money it actually keeps after paying different types of costs.

A company can have huge revenue and still be a weak business if its costs are too high. On the other hand, a company with smaller revenue but strong margins may be much healthier because it keeps more profit from every pound, dollar, or naira it earns. This is why margins are so important when looking at a company.

The first margin to understand is gross margin. This shows how much money is left after the company pays the direct cost of making or delivering its product. For example, if a company sells a product for £100 and it costs £60 to make, the company has £40 left. That means its gross margin is 40%. A high gross margin usually means the company has pricing power, a strong brand, or a product that does not cost too much to produce.

The next one is operating margin. This looks at profit after normal business expenses such as salaries, rent, marketing, research, administration, and other day-to-day costs. This is often more useful than gross margin because it shows how efficiently the company is actually being run. A company with a strong operating margin is usually managing its costs well and turning its business model into real profit.

The final one is net profit margin. This shows how much profit is left after everything has been paid, including interest, tax, and other expenses. This is the “bottom line” margin. It tells you how much of every £1 of revenue ends up as actual profit for shareholders.

For example, if a company makes £1 billion in revenue and has a net profit of £100 million, its net profit margin is 10%. That simply means the company keeps 10p in profit for every £1 it earns.

When reading margins, the key is not just to look at whether the number is high or low. You also need to compare it to similar companies. A supermarket may have very low margins because food retail is highly competitive and price-sensitive. A software company may have very high margins because once the software is built, it can be sold to many customers without the same level of extra cost. So, margins only really make sense when compared within the right industry.

It is also important to look at whether margins are improving or getting worse over time. If margins are rising, it may mean the company is becoming more efficient, increasing prices, or benefiting from scale. If margins are falling, it may mean costs are rising, competition is increasing, or the company is having to cut prices to protect sales.

A good way to think about margins is this: revenue tells you how big the company is, but margins tell you how good the business model is. Strong margins do not automatically make a company a good investment, but they are usually a sign that the business has something working in its favour.

In simple terms, when looking at a company’s margins, ask yourself three questions: How much money does the company keep from its sales? Are its margins better or worse than competitors? And are those margins improving or declining over time?

If you can answer those questions, you are already reading the company much better than someone who only looks at revenue growth.