How your fixed costs amplify profit when revenue grows — and amplify losses when it doesn't.
Operating leverage describes how sensitive your operating profit is to changes in revenue. A business with high operating leverage has a large proportion of fixed costs relative to variable costs. This means that once you cover your fixed costs, additional revenue flows almost directly to profit. But it also means a revenue drop hits profit hard because those fixed costs don't shrink.
Think of it like a seesaw. Fixed costs are the fulcrum. The further your revenue moves in either direction, the more amplified the impact on profit.
Operating leverage determines how your business responds to growth — and to downturns. SaaS companies are the classic high-leverage example: their cost to serve one more customer is nearly zero, so every incremental dollar of MRR is almost pure profit. But if revenue drops 20%, they still have the same engineering team, office lease, and infrastructure costs. Profit can evaporate fast.
Service businesses typically have lower operating leverage because their biggest cost (people) scales roughly with revenue. Add more clients, you need more staff. Lose clients, you can reduce headcount. The ride is less dramatic in both directions.
Understanding your operating leverage helps you plan for scenarios. High leverage means high upside in good times but requires bigger cash reserves to weather downturns. Low leverage means steadier but slower profit growth.
Example: A software company has $500K in monthly fixed costs and $100K in variable costs, generating $800K in revenue. Contribution margin is $700K, operating profit is $200K. If revenue jumps 25% to $1M, variable costs rise to $125K, but fixed costs stay at $500K. Contribution margin is $875K, operating profit is $375K — an 87.5% increase in profit from a 25% revenue bump. That's operating leverage in action.
Degree of Operating Leverage (DOL) = Contribution Margin / Operating Income
A DOL of 3.5 means a 10% increase in revenue should produce a 35% increase in operating profit (and vice versa for decreases).
CentSight calculates your degree of operating leverage by classifying expenses into fixed and variable categories. It shows how sensitive your profit is to revenue changes and runs scenario analysis: “What happens to our operating profit if revenue drops 15%?” The answer helps you build the right cash buffer and make confident decisions about adding fixed costs like new hires or long-term contracts.
CentSight models your operating leverage so you know how revenue swings will impact your bottom line.
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