Operating Leverage
A measure of how sensitive a company's operating income is to changes in revenue, driven by fixed vs. variable cost structure.
What is Operating Leverage?
Operating leverage reflects the proportion of fixed versus variable costs in a company's cost structure, and how this ratio amplifies the effect of revenue changes on operating income. Companies with high fixed costs (e.g., airlines, manufacturers, software firms) have high operating leverage: a 10% revenue increase may produce a 30%+ increase in operating income because fixed costs don't rise proportionally. Conversely, a 10% revenue drop may cause operating income to collapse. Companies with mostly variable costs (e.g., retailers with high COGS) have lower operating leverage — revenue swings produce more muted profit changes. The degree of operating leverage (DOL) is calculated as percentage change in operating income divided by percentage change in revenue.
Example
A software company has $100M in revenue, $20M in variable costs, and $50M in fixed operating costs (data centers, R&D), yielding $30M in operating income. If revenue grows 20% to $120M, variable costs rise to $24M but fixed costs remain $50M, producing $46M in operating income — a 53% increase from a 20% revenue gain. This 2.67x amplification is the operating leverage at work. Airlines, studios, and semiconductor companies exhibit similarly high operating leverage.