Have you ever wondered why a company’s profits can jump 30 per cent when its sales only rose 10 per cent? Or why a small drop in revenue can wipe out a big chunk of earnings? The answer is often operating leverage, one of the most useful ideas a beginner can learn for understanding company results.
What operating leverage means
Every business has two kinds of costs. Fixed costs stay roughly the same whatever happens to sales: rent, salaries for permanent staff, factories, software and machinery. Variable costs rise and fall with sales: raw materials, packaging, delivery and commission.
Operating leverage describes how much of a company’s cost base is fixed. A business with high fixed costs and low variable costs has high operating leverage. Once it has covered its fixed costs, most of each extra pound of sales drops straight through to profit. The flip side is that when sales fall, those fixed costs do not shrink, so profits fall fast.
A simple example
Imagine two companies, each with £100 million of sales and £10 million of profit. Company A has mostly fixed costs. Company B has mostly variable costs. If sales at both rise by 10 per cent, Company A’s costs barely move, so its profit might jump by close to £10 million, nearly doubling. Company B’s costs rise almost in line with its sales, so its profit rises by only about £1 million.
Now run it the other way. If sales fall 10 per cent, Company A’s profit could almost vanish, while Company B’s dips only slightly. Same sales move, very different outcomes.
Where you see it in the market
Software companies, airlines, chipmakers, hotels and car manufacturers tend to have high operating leverage. Their profits can explode in good years and collapse in bad ones. Supermarkets, distributors and many service businesses tend to have lower operating leverage, so their profits are steadier.
That is one reason cyclical shares move so much around turning points in the economy. It is also why the huge spending on artificial intelligence by big technology companies is such a debate. Building data centres adds enormous fixed costs. If revenue grows fast enough, profits can soar. If it does not, those costs weigh on earnings for years.
How traders use the idea
When you look at a company’s results, compare the change in revenue with the change in operating profit. If profit is growing much faster, operating leverage is working in the company’s favour. You can track this using operating margin, which shows how much profit the company keeps from each pound of sales, and gross margin.
It also helps to think ahead. If you expect a slowdown, companies with high operating leverage are the ones most likely to see earnings forecasts cut. If you expect a recovery, they are often the ones that bounce hardest. This week’s results from Microsoft, Alphabet and Amazon will show how operating leverage is working at the biggest spenders on AI. Our Morning Market Brief has the details.
The bottom line
Operating leverage explains why profits can swing much harder than sales. Learn to spot which companies have high fixed costs and you will understand why some shares are so sensitive to every change in the economic outlook.
If you want to find out how you handle decisions like this, and where your own trading could improve, the free Samuel & Co Trading Trader Assessment is a sensible next step.
