What is operating leverage in simple terms?

It is the effect of fixed costs on profit. When a large part of a company's costs does not change with sales, each extra dollar of revenue adds mostly to profit, so profit rises faster than sales, and falls faster when sales drop.

How do you calculate the degree of operating leverage?

Divide the percentage change in operating profit by the percentage change in revenue. AppLovin's adjusted EBITDA rose 59% on revenue up 55% in the third quarter of 2026, a ratio of about 1.07; a higher number means profit is more sensitive to sales.

Is high operating leverage good or bad?

Both. It magnifies profit growth when sales rise and magnifies the damage when sales fall, so companies with high fixed costs, such as chipmakers, airlines and miners, tend to have the most volatile earnings and share prices.

Guide · Basics

Operating Leverage: Why Profits Can Outgrow Sales

Operating leverage means a large share of a company's costs is fixed, so profit grows faster than revenue when sales rise and falls faster when they drop. Here it is with AppLovin and Novo Nordisk's reports of November 4, 2026.

Nov 5, 2026

Two companies reported on Wednesday, November 4, 2026, with the same pattern in very different businesses. AppLovin, which sells advertising software, said third-quarter revenue rose 55% to $2.185 billion while adjusted EBITDA rose 59% to $1.842 billion and net income 72% to $1.44 billion. Novo Nordisk, the Danish drugmaker, reported sales up 4% at constant exchange rates and adjusted operating profit up 27%. In both cases profit grew much faster than revenue. That gap has a name: operating leverage.

Every company has two kinds of costs. Variable costs rise with each sale, such as the raw materials in a product or the payment fees on a transaction. Fixed costs, such as research teams, software platforms, factories and head-office salaries, stay roughly the same whether sales rise or fall in a given quarter. The larger the fixed share, the higher the operating leverage: once those costs are covered, most of each additional dollar of revenue falls through to profit.

A simple way to measure it is the degree of operating leverage: the percentage change in operating profit divided by the percentage change in revenue. AppLovin's figure on EBITDA was about 1.07 (59% ÷ 55%), modest because its margin was already 84% and cannot rise much further. Novo's was close to 7 (27% ÷ 4%), but that number flatters the mechanism, because it also reflects cost cuts and a shift towards the high-margin Wegovy pill. A useful companion is the incremental margin: the extra profit divided by the extra revenue compared with a year earlier, which shows what each new sale is really worth.

The same arithmetic works in reverse, which is what makes high operating leverage a risk as well as a reward. When revenue falls, fixed costs do not, so profit drops faster than sales. Qualcomm showed a version of this the same evening: its handset revenue fell 26% and it guided its chip business's operating margin to 20% to 22% for the December quarter, down from 24%, as memory and packaging costs rose. Airlines, chipmakers and miners, all with heavy fixed costs, routinely see earnings swing several times as much as revenue over a cycle.

For investors this explains why stocks of high-leverage companies react so strongly to small changes in sales forecasts. A one-point cut to revenue growth can mean a much larger cut to earnings, and the share price follows the earnings. It also explains why management teams talk about "scale": a business that has built its fixed base can grow into it. The question to ask is whether the costs are truly fixed, or whether growth will require a new factory, a new data centre or a new sales force that resets the base.

When reading a report, put revenue growth next to operating profit growth and compute the ratio, then check the incremental margin against the existing margin. If profit is growing faster than sales, find out whether that is leverage on fixed costs, a change in product mix, or a one-off cut. And always read the guidance in the same light: a company with high operating leverage that guides to slower revenue growth, as AppLovin did with an implied 8% to 10% sequential increase after about 14%, is also telling you its profit growth is about to slow.