Fundamental analysisModule 1, lesson 5 of 48
Operating leverage
How fixed and variable costs make profits rise faster than revenue in good times and fall faster in bad ones, and how to estimate a company's operating leverage.
In this lesson
- Separate a company's costs into fixed and variable costs.
- Show with numbers why high fixed costs make profit move faster than revenue.
- Calculate the degree of operating leverage and use it to estimate profit changes.
- Explain why operating leverage cuts both ways.
Builds on
- Profit margins and what they revealOperating leverage explains why operating margin rises and falls with revenue.
On this page
In simple terms
A company's costs come in two kinds.
- Variable costs rise and fall with sales: raw materials, packaging, sales commissions, delivery.
- Fixed costs stay roughly the same whatever the sales: rent, most salaries, depreciation on factories and equipment, interest, software licences.
When fixed costs are a large part of the total, each extra rupee of sales brings in more profit, because the fixed costs are already paid. The reverse is also true: each lost rupee of sales takes away more profit. This magnifying effect is called operating leverage.
Two made-up companies
Worked example: Same profit, different cost structures
Two made-up companies each have revenue of ₹100 crore and operating profit of ₹15 crore, but their costs are built differently.
| Pragati Software | Sahyog Traders | |
|---|---|---|
| Variable costs | 40% of revenue | 75% of revenue |
| Fixed costs | ₹45 crore | ₹10 crore |
Now see what happens when revenue rises or falls by 10%.
| Pragati, revenue ₹110 crore: 110 − 44 − 45 | profit ₹21 crore (+40%) |
|---|---|
| Pragati, revenue ₹90 crore: 90 − 36 − 45 | profit ₹9 crore (−40%) |
| Sahyog, revenue ₹110 crore: 110 − 82.5 − 10 | profit ₹17.5 crore (+17%) |
| Sahyog, revenue ₹90 crore: 90 − 67.5 − 10 | profit ₹12.5 crore (−17%) |
A 10% move in revenue moves Pragati's profit by 40% and Sahyog's by about 17%. Pragati has high operating leverage; Sahyog has low operating leverage.
Measuring operating leverage
The contribution is revenue minus variable costs: the amount left to pay fixed costs and provide profit. The degree of operating leverage is:
Degree of operating leverage = contribution ÷ operating profit
Percentage change in operating profit ≈ degree of operating leverage × percentage change in revenue
For Pragati, contribution is 100 − 40 = ₹60 crore, so the degree is 60 ÷ 15 = 4: each 1% change in revenue moves profit by about 4%. For Sahyog, contribution is ₹25 crore and the degree is 25 ÷ 15, about 1.7.
The degree of operating leverage is not a fixed number. It is highest when a company is just above break-even, because profit is small compared with contribution, and it falls as profits grow.
Break-even
The break-even level of revenue is where contribution exactly covers fixed costs. For Pragati, each rupee of revenue contributes 60 paise, so break-even revenue is 45 ÷ 0.60 = ₹75 crore. A fall of 25% from ₹100 crore would take it to zero profit. Sahyog contributes 25 paise per rupee, so its break-even is 10 ÷ 0.25 = ₹40 crore, a much deeper fall away.
Where to look for operating leverage
Companies don't report fixed and variable costs separately, so you have to estimate them.
- Industry knowledge. Software, telecom, airlines, hotels, cement and steel have high fixed costs; trading, distribution and contract manufacturing have mostly variable costs.
- History. Compare how much operating profit changed with how much revenue changed in past years. If profit regularly moves three or four times as much, operating leverage is high.
- Cost lines. Employee costs, depreciation and rent are largely fixed in the short run; raw materials and freight are largely variable.
Reading margins with operating leverage in mind
Operating leverage explains why operating margins often expand during a boom and shrink in a downturn. A company reporting record margins after two years of strong sales growth may simply be benefiting from operating leverage, not from better management or pricing power. If sales slow, the same leverage will push margins down again. This is especially important for cyclical businesses.
Why it matters
Operating leverage tells you how sensitive profits are to revenue, and therefore how risky they are. Two companies with the same profit today can have very different futures if sales change. It also helps you judge whether a margin improvement is likely to last, and why forecasts of profit for high-fixed-cost businesses are so uncertain.
Limitations
The split between fixed and variable costs is an estimate. In the long run most costs are variable: companies can close plants, cut staff or renegotiate rent. Operating leverage also ignores changes in prices; a company with pricing power can protect profit when volumes fall. Use it as an estimate of sensitivity, not a precise forecast.
Common mistakes
- Assuming profit grows in line with revenue. It rarely does when fixed costs are high.
- Crediting management for margin gains from operating leverage. Check whether sales growth explains them.
- Forgetting the downside. The same leverage that magnifies gains magnifies losses.
- Treating the degree of operating leverage as constant. It changes as profit changes.
Try it yourself
Take a listed company with high fixed costs, such as a hotel, airline or cement company.
- From its annual reports, note revenue and operating profit for several years.
- For each year, calculate the percentage change in revenue and in operating profit.
- Divide the profit change by the revenue change for each year. Is the result usually above 1?
- Repeat for a trading or distribution company and compare.
Key takeaways
- Fixed costs, such as rent, salaries and depreciation, stay the same when sales change. Variable costs, such as raw materials, rise and fall with sales.
- When fixed costs are a large share of total costs, a small change in revenue causes a much bigger change in profit. This is operating leverage.
- The degree of operating leverage, contribution divided by operating profit, estimates how many percent profit moves for each 1% change in revenue.
- Operating leverage helps in good times and hurts in bad ones. A 10% fall in revenue can wipe out much more than 10% of profit.
- Rising operating margins during a sales boom may reflect operating leverage rather than better management, and can reverse.
Check your understanding
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Terms used in this lesson
- Operating leverage
- The way high fixed costs make operating profit change by a larger percentage than revenue, in both directions.
- Fixed and variable costs
- Fixed costs stay the same when sales change; variable costs rise and fall with sales. The split drives operating leverage and break-even.
- Operating margin
- Operating profit as a percentage of revenue. It shows how much of each ₹100 of sales is left after all operating costs.
- Operating profit
- Profit from a company's operations after all operating costs, including depreciation, but before interest, other income and tax.
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This lesson is general education, not investment advice. Examples use made-up or clearly dated figures to explain ideas; they are not recommendations. Read the disclaimer.