What does a DOL of 3 mean?

Each 1% change in sales changes operating income by about 3% in the same direction.

What causes high operating leverage?

A high proportion of fixed costs relative to variable costs.

Why does DOL change with sales volume?

It is measured at a point: as sales rise above break-even, EBIT grows faster than contribution margin and DOL falls.

Degree of Operating Leverage (DOL) Formula

Home › Finance Formulas › Degree of Operating Leverage (DOL) Formula

Degree of Operating Leverage (DOL) Calculator

The degree of operating leverage measures how sensitive operating profit (EBIT) is to a change in sales. By definition it is the percentage change in EBIT divided by the percentage change in sales, and at a given level of output this equals contribution margin ÷ EBIT. The source of operating leverage is fixed costs: once they are covered, every extra unit’s contribution drops straight to profit.

Formula

DOL = % change in EBIT% change in sales = Contribution marginEBIT = Sales − Variable costsSales − Variable costs − Fixed costs

Where

Contribution margin: sales minus variable costs
EBIT: operating income = contribution margin − fixed costs

Calculator

Sales revenue

Total variable costs

Fixed operating costs

Result and step-by-step solution

Degree of operating leverage

A 10% rise in sales would raise EBIT by about 20% (and a 10% fall would cut it by the same).

Contribution margin
500,000.00 − 300,000.00 = 200,000.00
EBIT
200,000.00 − 100,000.00 = 100,000.00
Divide
200,000.00100,000.00 = 2

How to use the formula

A DOL of 2 means a 10% rise in sales lifts EBIT by 20%, and a 10% fall cuts it by 20%. Businesses with high fixed costs and low variable costs, such as software, airlines and hotels, have high operating leverage: very profitable when volumes are strong, painful in a downturn. DOL is highest just above the break-even point and falls as sales grow further.

In the example, sales of 500,000, variable costs of 300,000 and fixed costs of 100,000 give a contribution margin of 200,000 and EBIT of 100,000, so DOL is 2. At the break-even point EBIT is zero and DOL is undefined. Combine it with borrowing costs in the degree of combined leverage.

Frequently asked questions

What is the degree of operating leverage formula?: DOL = % change in EBIT ÷ % change in sales = contribution margin ÷ EBIT = (sales − variable costs) ÷ (sales − variable costs − fixed costs).
What does a DOL of 3 mean?: Each 1% change in sales changes operating income by about 3% in the same direction.
What causes high operating leverage?: A high proportion of fixed costs relative to variable costs.
Why does DOL change with sales volume?: It is measured at a point: as sales rise above break-even, EBIT grows faster than contribution margin and DOL falls.

Last reviewed: September 26, 2026. Calculations run in your browser and were checked against numpy-financial, SciPy and published spreadsheet examples.