Degree of Operating Leverage (DOL)
Contribution margin (sales − variable costs) divided by EBIT. Measures how sensitively EBIT moves to a percentage change in sales.
When to use: Use to gauge fixed-cost intensity and earnings cyclicality. Higher DOL = more operating leverage = bigger EBIT swings for the same sales swing. Capital-intensive industries (airlines, semiconductors) have high DOL; service firms have lower DOL.
Formula
Variables
| Symbol | Name | Description | Unit |
|---|---|---|---|
| DOL | Degree of Operating Leverage | Contribution margin / EBIT | integer |
| ContrMargin | Contribution Margin | Sales − variable costs | $ |
| EBIT | EBIT | Earnings before interest and taxes (operating income) | $ |
Real-Life Examples
Example 1: Manufacturer with Fixed Costs
Contribution margin $300M, EBIT $100M.
Given
Step-by-Step
DOL of 3.0 — a 10% rise in sales lifts EBIT by ~30%; a 10% drop cuts EBIT by ~30%. High operating leverage cuts both ways.
Frequently Asked Questions
Operating leverage measures EBIT sensitivity to sales (cost structure). Financial leverage measures EPS sensitivity to EBIT (capital structure). They're multiplicative: total leverage = DOL × DFL.
In demand downturns. Industries with mostly-fixed costs (airlines, hotels, semiconductors) see EBIT collapse when revenue dips because they can't cut costs fast enough. The 2020 pandemic was a textbook stress test.