Capital Structure & Leverage: Optimal Mix, Trade-offs & Real-World Impact

Core Concepts

What is Capital Structure?

Capital structure refers to the mix of debt and equity a company uses to finance its operations and growth. It is a long-term financial decision that affects:

• Cost of capital (how expensive financing is)
• Risk profile (business and financial risk)
• Shareholder value (dividends, stock price)

classDiagram
    class CapitalStructure {
        +Debt: Liabilities (bonds, loans)
        +Equity: Ownership (shares, retained earnings)
        +Hybrid: Preferred stock, convertibles
    }
    class Debt {
        +Fixed payments (interest)
        +Tax-deductible
        +Higher risk (bankruptcy)
    }
    class Equity {
        +No fixed payments (dividends optional)
        +No tax shield
        +Lower risk (residual claim)
    }
    CapitalStructure --> Debt
    CapitalStructure --> Equity

What is Leverage?

Leverage (or gearing) measures how much a company relies on debt to finance its assets. It amplifies both returns (when profits rise) and risks (when profits fall).

Types of Leverage:

Why does leverage matter?

• Positive leverage: Debt increases returns when the company’s return on assets (ROA) > cost of debt.
• Negative leverage: Debt drags returns when ROA < cost of debt (e.g., high-interest loans during low sales).

Theories of Capital Structure

1. Traditional (Net Income) Approach

• Assumption: Debt is cheaper than equity (due to tax shields), but too much debt increases bankruptcy risk.
• Optimal Capital Structure: A trade-off point where the WACC (Weighted Average Cost of Capital) is minimized.
• Graph:

2. MM (Modigliani-Miller) Propositions

• Proposition I (No Taxes): Capital structure does not affect firm value (perfect capital markets).
• Proposition II (With Taxes): Debt is valuable because interest is tax-deductible.
  • Formula: $$V_L=V_U+t_c\times D$$ Where:
    • $V_L$ = Firm value with debt
    • $V_U$ = Firm value without debt
    • $t_c$ = Corporate tax rate
    • $D$ = Debt

Nepali Example: A Nepalese bank (e.g., NMB Bank) issues bonds at 8% interest. If the corporate tax rate is 25%, the tax shield adds value: $$\text{Tax Shield}=8\%\times 25\%=2\%\text{ of debt value}$$

3. Pecking Order Theory (Myers & Majluf)

• Firms prefer internal financing first (retained earnings), then debt, then equity (due to asymmetric information).
• Why?
  • Managers know more than investors → issuing equity signals bad news (investors may think the company is overvalued).
  • Debt is cheaper and less risky than equity.

Real-World Example:

• Pathao (ride-hailing app) initially funded growth via bank loans (debt) before considering equity.
• Daraz (e-commerce) used retained profits first, then took venture debt before an IPO.

Working Capital vs. Capital Structure

Numerical Example: Optimal Capital Structure for a Nepali Retailer

Business: Kathmandu Corner Store (family-owned retail shop in Thapathali). Current Financials:

• Total Assets: ₹10,00,000
• Equity: ₹6,00,000
• Debt: ₹4,00,000 (bank loan at 10% interest)
• EBIT: ₹2,00,000
• Tax Rate: 25%
• Cost of Equity (Ke): 12%
• Cost of Debt (Kd): 10%

Step 1: Calculate Current WACC

$$\text{WACC}=\left(\frac{E}{V}\times Ke\right)+\left(\frac{D}{V}\times Kd\times (1-t_c)\right)$$ Where:

• $E=₹6,00,000$, $D=₹4,00,000$, $V=E+D=₹10,00,000$
• $t_c=25\%$

$$\text{WACC}=\left(\frac{6}{10}\times 12\%\right)+\left(\frac{4}{10}\times 10\%\times 0.75\right)=7.2\%+3\%=\ast \ast 10.2$$

Step 2: What if Debt Increases to ₹6,00,000?

• New $D=₹6,00,000$, $E=₹4,00,000$
• Risk of bankruptcy increases → Cost of equity rises to 14% (due to higher risk).
• New WACC: $$\text{WACC}=\left(\frac{4}{10}\times 14\%\right)+\left(\frac{6}{10}\times 10\%\times 0.75\right)=5.6\%+4.5\%=\ast \ast 10.1$$ Observation: WACC decreases slightly due to tax shield, but risk rises. The optimal point is likely somewhere between 40% and 60% debt.

Real-World Applications in Nepal

1. eSewa & Khalti (Digital Payments)

• Capital Structure: Both companies initially relied on venture debt (low-interest loans from investors) before issuing equity.
• Leverage Impact:
  • High debt early on allowed rapid expansion (e.g., Khalti’s UPI integration).
  • Too much debt could have risked bankruptcy if user growth stalled (e.g., during COVID-19).

2. Nepal Electricity Authority (NEA) & NTC

• High Debt Load: NEA and NTC have ₹100+ billion in debt due to underinvestment and low tariffs.
• Problem:
  • Financial leverage makes them vulnerable to interest rate hikes.
  • Operating leverage (high fixed costs of power plants) hurts when demand drops.

3. Nepal Investment Bank Limited (NIBL)

• Optimal Mix: NIBL uses a balanced capital structure (~50% debt, 50% equity) to:
  • Benefit from tax shields on debt.
  • Avoid credit rating downgrades (high debt = higher borrowing costs).

Advantages and Disadvantages of Leverage

The Accounting Cycle of Capital Structure Decisions

flowchart TD
    A["Need for Financing"] --> B{"Internal or External?"}
    B -->|"Internal"| C["Retained Earnings"]
    B -->|"External"| D{"Debt or Equity?"}
    D -->|"Debt"| E["Issue Bonds/Loans<br/>(Tax Shield Benefit)"]
    D -->|"Equity"| F["Issue Shares<br/>(Dilutes Ownership)"]
    E --> G["Update Balance Sheet<br/>(Debt ↑, Equity ↓)"]
    F --> G
    G --> H["Calculate New WACC<br/>(Risk vs. Cost Trade-off)"]
    H --> I{"Optimal?"}
    I -->|"Yes"| J["Proceed"]
    I -->|"No"| K["Adjust Mix<br/>(e.g., Debt/Equity Ratio)"]

flowchart TD
    A["Identify financing need"] --> B["Choose debt/equity mix"]
    B --> C["Record journal entry"]
    C --> D["Post to T‑accounts"]
    D --> E["Prepare trial balance"]
    E --> F["Prepare financial statements"]
    F --> G["Analyze leverage ratios"]

In the real world

• eSewa uses debt financing to fund its rapid technology upgrades, leveraging the tax shield from interest payments to lower its effective cost of capital.
• NEA balances high operating leverage (fixed plant costs) with moderate financial leverage, using long‑term bonds to fund new hydro projects while keeping debt ratios around 45% to avoid rating downgrades.
• Kathmandu Corner Store (the example retailer) applies the trade‑off theory by targeting a 50% debt ratio, which minimizes its WACC as shown in the numerical example.

Exam Tip: How This Unit is Tested

1. Definitions & Concepts (5-10 marks):

   • Differentiate financial leverage vs. operating leverage.
   • Explain MM Proposition I vs. II.
   • Define pecking order theory.

2. Numerical Problems (15-20 marks):

   • Calculate WACC given debt-equity ratios.
   • Determine optimal capital structure using WACC graphs.
   • Example Question:

     "A Nepali manufacturing firm has ₹50 lakhs in debt at 9% and ₹100 lakhs in equity. If the tax rate is 20%, calculate the firm’s value using MM Proposition II."

3. Case Studies (10-15 marks):

   • Analyze real Nepali firms (e.g., NMB Bank, Daraz, Pathao) and their capital structure.
   • Example:

     "Why does Daraz prefer venture debt over equity? What risks does this pose?"

4. Short Notes (5 marks each):

   • Trade-off theory
   • Financial distress costs
   • Signaling effect of debt vs. equity

Key Formula to Memorize: $$\text{WACC}=\left(\frac{E}{V}\times Ke\right)+\left(\frac{D}{V}\times Kd\times (1-t_c)\right)$$

Final Reminder:

• Debt is a double-edged sword: It can boost returns but also amplify losses.
• Equity is safer but more expensive.
• Always consider risk when choosing capital structure.

Practice: Solve at least 3 WACC problems and 1 case study before the exam.