Compute operating leverage: how much sales changes affect your company’s operating profit (EBIT).
Formula: DOL = Q(P−V) / [Q(P−V) − F]
Q = 1,000 units, P = 50, V = 30, F = 10,000 → contribution margin = 1,000 × (50 − 30) = 20,000; EBIT = 20,000 − 10,000 = 10,000; DOL = 20,000 ÷ 10,000 = 2.0. Meaning a 1% sales increase raises EBIT by about 2% at this point.
Formula: DOL = %ΔEBIT ÷ %ΔSales
Example: sales +10% and EBIT +20% → DOL = 20 ÷ 10 = 2.0.
Drag the sliders to see how volume/price changes affect DOL and EBIT from the base point (Q=1,000, P=50, V=30, F=10,000 → base DOL 2.0).
| DOL value | Interpretation |
|---|---|
| 1.0 | No operating leverage (no fixed costs) |
| 1.0 – 2.0 | Low — EBIT relatively stable vs sales |
| 2.0 – 4.0 | Moderate — sales changes moderately amplified |
| > 4.0 | High — EBIT very sensitive; watch out for sales declines |
| Negative / undefined | Negative or zero EBIT — company below/at break-even |
| Measure | Formula | Measures | Leverage source |
|---|---|---|---|
| DOL | Contribution margin ÷ EBIT | EBIT sensitivity to sales | Fixed operating costs |
| DFL | EBIT ÷ (EBIT − interest) | Net income sensitivity to EBIT | Interest expense (debt) |
| DCL | DOL × DFL | Net income sensitivity to sales | Combination of both |
Verified example: EBIT = 10,000, interest expense = 4,000 → DFL = 10,000 ÷ (10,000 − 4,000) = 1.67. With DOL 2.0 → DCL = 2.0 × 1.67 = 3.33.
Do not confuse them: DOL involves no debt/interest at all — that is DFL’s territory. This calculator only computes DOL; DFL/DCL are shown as comparison context.
The degree of operating leverage (DOL) measures how sensitive operating profit (EBIT) is to changes in sales. Its formula is DOL = contribution margin ÷ EBIT, or Q(P−V) ÷ [Q(P−V) − F], where Q is volume, P selling price, V variable cost per unit, and F fixed costs.
DOL (degree of operating leverage) measures EBIT sensitivity to sales and comes from the fixed vs variable cost structure. DFL (degree of financial leverage) measures net income sensitivity to EBIT and comes from interest expense: DFL = EBIT ÷ (EBIT − interest). DCL (degree of combined leverage) combines both: DCL = DOL × DFL, measuring net income sensitivity to sales.
DOL explodes when EBIT approaches zero (the company near break-even) because its divisor is small, and is undefined exactly at break-even (EBIT = 0). That is why DOL is only meaningful at a specific sales point and must be recomputed whenever volume changes.
A high DOL is not absolutely good or bad: it magnifies gains when sales rise, but magnifies losses when sales fall. A high DOL means greater operating risk due to the high fixed-cost share.
DOL = % change in EBIT ÷ % change in sales. Example: if sales rise 10% and EBIT rises 20%, then DOL = 20% ÷ 10% = 2.0. Meaning every 1% change in sales changes EBIT by about 2%.
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