Learning Objectives
By the end of this lesson, learners should be able to:
- Define capital structure.
- Explain financial leverage.
- Distinguish operating leverage from financial leverage.
- Explain the relationship between debt and shareholder returns.
- Analyse the benefits and risks of leverage.
- Explain major capital structure theories.
- Evaluate leverage from an executive perspective.
1. Meaning of Capital Structure
Capital structure refers to the mix of long-term financing used by an organization.
It may include:
- Ordinary equity.
- Preference shares.
- Bonds.
- Long-term loans.
- Other long-term financing instruments.
The central executive question is:
What combination of debt and equity best supports organizational value while maintaining acceptable financial risk?
2. Financial Leverage
Financial leverage arises when an organization uses financing that creates relatively fixed financial obligations, particularly debt.
Debt can magnify the effect of operating performance on returns to equity holders.
This effect works in both directions.
When operating performance is strong, leverage may increase shareholder returns.
When performance deteriorates, leverage can magnify losses to equity holders.
3. Simple Illustration
Consider two organizations.
Organization A
- Equity = $100m
- Debt = $0
Organization B
- Equity = $50m
- Debt = $50m
- Interest = $4m
Suppose both generate operating profit of $15m.
Organization A:
Profit before tax = $15m
Organization B:
Profit before tax = $15m − $4m = $11m
Although Organization B has lower absolute profit, its return relative to the smaller equity base may be higher.
This illustrates leverage.
4. Return on Equity and Leverage
A simplified relationship can be expressed as:
ROE = Profit available to equity holders / Equity
Debt can increase ROE when operating returns exceed the effective cost of debt.
But when operating returns fall below the financing cost, leverage can reduce ROE significantly.
5. Positive and Negative Leverage
Positive Leverage
Occurs when the return generated by assets or operations exceeds the effective cost of borrowed funds.
Negative Leverage
Occurs when the return generated by assets is below the effective cost of debt.
Therefore:
Debt does not automatically create value.
Its effect depends on the relationship between operating performance and financing cost.
6. Financial Leverage and Risk
Debt creates fixed or relatively fixed obligations.
These may include:
- Interest payments.
- Principal repayments.
- Covenant requirements.
- Refinancing obligations.
If operating cash flows fall, these obligations remain.
Consequently, leverage can increase:
- Default risk.
- Liquidity pressure.
- Earnings volatility.
- Financial distress risk.
7. Degree of Financial Leverage
One measure is:
DFL = % Change in EPS / % Change in EBIT
A higher DFL indicates greater sensitivity of earnings per share to changes in operating profit.
For example:
If EBIT changes by 10% and EPS changes by 20%:
DFL = 20% / 10% = 2.0
8. Operating Leverage
Operating leverage arises from fixed operating costs.
Examples include:
- Factory rent.
- Salaried employees.
- Depreciation.
- Long-term infrastructure costs.
High operating leverage means changes in revenue can produce disproportionately large changes in operating profit.
9. Combined Leverage
An organization may have both:
- High operating leverage.
- High financial leverage.
This can create substantial overall earnings sensitivity.
Conceptually:
Combined leverage = Operating leverage × Financial leverage
Executives should therefore assess operating and financing structures together.
10. Capital Structure and Risk
A highly leveraged organization may face:
- Higher interest burden.
- Reduced borrowing capacity.
- Greater refinancing risk.
- Increased sensitivity to economic downturns.
- More restrictive lender covenants.
However, conservative leverage can also result in underutilization of debt capacity.
The appropriate structure therefore depends on organizational circumstances.
11. Trade-Off Theory
The trade-off theory suggests that organizations balance:
Benefits of Debt
- Potential tax benefits.
- Potentially lower financing cost.
- Reduction in agency problems in certain circumstances.
against:
Costs of Debt
- Financial distress.
- Bankruptcy-related costs.
- Agency costs.
- Reduced flexibility.
The theoretical optimal capital structure occurs where the marginal benefits of additional debt are balanced against its marginal costs.
12. Pecking Order Theory
The pecking order theory suggests that organizations may prefer financing sources in a hierarchy because of information asymmetry.
A simplified ordering is:
- Internal funds.
- Debt.
- External equity.
The logic is that external equity may be particularly sensitive to information asymmetry between management and outside investors.
However, actual financing decisions vary significantly by organization and circumstances.
13. Modigliani and Miller
The Modigliani-Miller propositions provide an important theoretical foundation for capital structure analysis.
Under highly restrictive assumptions, including perfect capital markets and no taxes or financial distress costs, capital structure does not affect firm value.
Once assumptions such as:
- Corporate taxes.
- Bankruptcy costs.
- Agency costs.
- Information asymmetry.
are introduced, financing structure can become economically relevant.
14. Agency Considerations
Capital structure can influence relationships between:
- Managers and shareholders.
- Shareholders and creditors.
For example, high debt may encourage managers to maintain financial discipline because debt commitments impose cash-flow requirements.
However, excessive debt may encourage risk-shifting behaviour or create conflicts with creditors.
15. Financial Covenants
Lenders may impose covenants to protect their interests.
Examples include:
- Maximum leverage ratios.
- Minimum interest coverage.
- Restrictions on additional borrowing.
- Restrictions on asset sales.
Covenants can reduce lender risk but may constrain executive flexibility.
16. Debt Capacity
Debt capacity refers to the organization’s ability to take on additional borrowing without creating unacceptable financial risk.
Factors affecting debt capacity include:
- Stable cash flows.
- Asset quality.
- Profitability.
- Existing leverage.
- Interest coverage.
- Industry conditions.
- Credit quality.
- Management’s risk appetite.
17. Interest Coverage
A common measure is:
Interest Coverage Ratio = EBIT / Interest Expense
Suppose:
- EBIT = $20m
- Interest expense = $5m
Then:
Interest Coverage = 20 / 5 = 4 times
This indicates operating profit is four times the current interest expense.
A declining coverage ratio may signal increasing financial pressure.
18. Debt-to-Equity Ratio
A common leverage measure is:
Debt-to-Equity = Debt / Equity
For example:
- Debt = $60m
- Equity = $40m
Debt-to-equity:
60 / 40 = 1.5
This means debt is 1.5 times the equity amount used in the calculation.
Executives should specify whether the measure uses:
- Book values.
- Market values.
- Gross debt.
- Net debt.
Different definitions can produce materially different results.
19. Leverage and Shareholder Value
The objective is not to maximize debt.
Nor is it necessarily to eliminate debt.
The executive objective is to determine a financing structure that supports:
- Value creation.
- Financial resilience.
- Liquidity.
- Strategic flexibility.
- Appropriate risk.
20. Capital Structure Decision Framework
Executives should evaluate:
1. Business Risk
How stable are operating cash flows?
2. Financing Cost
What is the marginal cost of debt and equity?
3. Debt Capacity
How much additional borrowing can the organization reasonably support?
4. Liquidity
Can the organization meet obligations under stress?
5. Flexibility
Will financing restrictions limit strategic actions?
6. Market Conditions
Are debt and equity markets favourable?
7. Strategic Horizon
What financing structure supports long-term objectives?
21. Stress Testing Leverage
Executives should test leverage under adverse conditions.
For example:
Revenue −20%
↓
EBIT declines
↓
Interest expense remains
↓
Interest coverage deteriorates
↓
Liquidity and covenant risk increase
This type of analysis helps executives determine whether the organization can withstand adverse conditions.
Lesson Summary
Capital structure concerns the mix of debt and equity used to finance an organization.
Financial leverage can:
- Magnify shareholder returns when operating performance is strong.
- Magnify losses and financial distress when performance deteriorates.
Important concepts include:
- Trade-off theory.
- Pecking order theory.
- Modigliani-Miller propositions.
- Debt capacity.
- Interest coverage.
- Financial leverage.
Key Principle
The objective of capital structure management is not to maximize debt or minimize debt, but to establish a financing structure that balances value creation, financial risk, liquidity and strategic flexibility.
References
- CFA Institute — Corporate Finance and Capital Structure
CFA Institute - Brealey, R. A., Myers, S. C., Allen, F., & Edmans, A. — Principles of Corporate Finance. McGraw Hill.
- Modigliani, F., & Miller, M. H. — “The Cost of Capital, Corporation Finance and the Theory of Investment.” American Economic Review.
- Ross, S. A., Westerfield, R. W., Jaffe, J., & Jordan, B. D. — Corporate Finance. McGraw Hill.