Glossary term
Combined Leverage
Combined leverage measures how operating leverage and financial leverage together affect a company's earnings sensitivity.
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What Is Combined Leverage?
Combined leverage measures how operating leverage and financial leverage work together to magnify changes in a company's earnings available to shareholders. It is often discussed through the degree of combined leverage, or DCL, which links a change in sales to a larger or smaller change in earnings per share.
The idea is simple: fixed operating costs make operating income more sensitive to revenue, and fixed financing costs make shareholder earnings more sensitive to operating income. When both are present, the effects can stack.
Key Takeaways
- Combined leverage captures the joint effect of operating leverage and financial leverage.
- Operating leverage comes from fixed operating costs such as plants, salaries, software, or equipment.
- Financial leverage comes from debt or other financing obligations with fixed charges.
- High combined leverage can improve upside when sales rise but can damage earnings quickly when sales fall.
- The measure is most useful as a sensitivity tool, not as a stand-alone valuation ratio.
How Combined Leverage Is Calculated
A common expression is:
In this formula, DOL is the degree of operating leverage and DFL is the degree of financial leverage. The combined figure estimates how much earnings per share may change for a given percentage change in sales, assuming the cost and capital structure relationships hold.
For example, if a company has operating leverage of 2.0 and financial leverage of 1.5, combined leverage is 3.0. A 10 percent increase in sales could be associated with roughly a 30 percent increase in earnings per share. The same sensitivity can work in reverse if sales decline.
Operating Versus Financial Leverage
Type | What creates it | What it magnifies |
|---|---|---|
Operating leverage | Fixed operating costs | Sales changes into operating income changes |
Financial leverage | Debt, preferred dividends, or fixed financing charges | Operating income changes into shareholder earnings changes |
Combined leverage | Both cost structure and financing structure | Sales changes into earnings-per-share changes |
This layering explains why two companies with similar revenue growth can deliver very different earnings outcomes. One may have flexible costs and little debt. Another may have heavy fixed costs and a leveraged balance sheet. The second company's earnings are usually more volatile.
How to Interpret It
Combined leverage is most useful when analyzing business resilience. A high figure can look attractive in an expansion because incremental revenue can flow quickly into earnings. But it also means a revenue miss can move through the income statement with unusual force.
The useful lesson is that leverage is not only about debt. A company can carry little financial debt and still be highly leveraged operationally if it has a large fixed-cost base. Conversely, a company with flexible operating costs can become risky if its financing structure requires heavy fixed payments.
In credit work, combined leverage helps explain why lenders care about both margin structure and debt service. A borrower with stable revenue but thin contribution margins may have less room for error than the headline growth rate suggests. A borrower with strong margins but heavy debt can also become fragile if interest expense absorbs the operating cushion.
Where the Measure Can Mislead
DCL is a simplified sensitivity measure. It usually assumes a relevant range of activity where cost behavior remains stable. That assumption can break down when companies restructure, renegotiate debt, change pricing, enter new markets, or hit capacity constraints. The calculation also depends on the quality of the input measures.
Combined leverage should therefore be read alongside margins, debt maturity, interest coverage, revenue cyclicality, and management's ability to cut costs. It is a diagnostic, not a prophecy.
The Bottom Line
Combined leverage shows how operating leverage and financial leverage together shape earnings sensitivity. It helps investors and managers see whether sales growth is likely to translate into outsized earnings gains, and whether a sales decline could pressure profits, cash flow, and balance-sheet flexibility faster than expected.