The optimal capital structure is the one at which the value of the company is maximized.
The static trade-off theory is based on balancing the expected costs from financial distress against the tax benefits of debt service payments. Considering only the tax shield provided by debt and the costs of financial distress, the expression for the value of a leveraged company becomes:
VL = VU + tD-PV(Costs of financial distress)
PV(Costs of financial distress) refers to the present value of the expected costs of financial distress. This equation represents the static trade-off theory of capital structure. It results in an optimal capital structure where debt is less than 100%. This can be seen in Exhibit 4 from the curriculum.
WACC is minimum at the point where the firm value is maximized.
When a company identifies its most appropriate capital structure, it may adopt this as its target capital structure. However, a company’s capital structure may vary from its target because management may try to take advantage of short-term opportunities in alternate financing sources. Market value variations also continuously affect the company’s capital structure. Sometimes, it may be impractical and expensive for a company to maintain its target structure. However, as long as the assumptions of the analysis and the target are unchanged, analysts and management should focus on the target capital structure.
What WACC weights to use?
When conducting an analysis if we know the company’s target capital structure, then we should use it in our analysis. However, analysts typically do not know a company’s target capital structure. It can be estimated using one of these methods:
In theory, an optimal capital structure is the one at which the company’s WACC is minimized and company value maximized. It represents a trade-off between the cost-effectiveness of debt and the expected costs of financial distress.
However, in reality many practical considerations affect the capital structure. These include:
5.1 Capital Structure Policies and Target Capital Structures
In practice, estimating a company’s cost of equity capital or the costs of financial distress is challenging. As a result, debt-oriented capital structure polices are commonly used. They define reasonable limits for borrowing by the company, for example, debt/equity less than 0.5 times.
Debt ratings are independent, third-party assessments of the quality and safety of a company’s debt. They are based on the analysis of the company’s ability to pay the promised cash flows. Debt ratings are an important factor in the practical management of leverage. Since borrowing costs are closely tied to the bond ratings, maintaining the company’s rating at a certain level can also be an explicit goal for management.
As leverage rises, rating agencies tend to lower the ratings of the company’s debt. This is done to reflect the higher credit risk resulting from the increasing leverage. Lower ratings signify higher risk to both equity and debt capital providers, who in turn demand higher returns.
Market value v/s book value
The optimal capital structure should be calculated using the market value of equity and debt. However, company capital structure targets often use book values instead because:
5.2 Financing Capital Investments
In practice, financing decisions are usually linked to investment spending – and often to a particular investment or acquisition.
The nature of the investments may or may not be suited to leverage. For example, assets that are relatively easy to market (e.g. real estate) are considered to be a strong collateral and are suitable to leverage. Whereas, assets that are tied to the parent’s operation (e.g. a service operation) are less suitable to leverage.
To reduce risks a company must match the cash flows and maturity structures of their assets and liabilities. A company that finances long-term assets with short-term obligations faces rollover risk. Whereas, a company that finances short-term assets with long-term obligations faces the risk of overpaying in financing cost.
5.3 Market Conditions
Financing decisions are often opportunistic. Managers consider the share price of their company as well as market interest rates for their debt when deciding when, how much, and what type of capital to raise.
Another important consideration is whether their debt or equity issuance meets index provide requirements. Inclusion in a benchmark index can significantly affect the demand for these securities.
5.4 Information Asymmetries and Signaling
Managers have more information about a company’s performance and prospects than outsiders, such as owners and investors. This is referred to as information asymmetry. Investors demand higher returns when asymmetry of information is high because this increases the probability of agency costs.
Investors closely watch manager’s decision for insights into the company’s future prospects. Managers may provide information to investors (“signaling”) through their choice of financing method. Fixed payment commitments, for example, can indicate management’s confidence in the company’s future prospects.
Being aware of this, managers take into account how their actions might be interpreted by outsiders.
Pecking Order Theory: This theory suggests that managers choose methods of financing that send the least signal to outsiders. The preferred hierarchy for financing is:
Agency costs arise due to conflicts of interest when an agent makes decisions for a principal. All public companies and large private companies are usually managed by non-owners. Therefore, an agency cost in the context of a corporation is a consequence of a conflict of interest between managers and owners. Since outside shareholders are aware of this conflict, they will take steps that incur costs such as:
The better a company is governed, the lower the agency costs.
Free Cash Flow Hypothesis: As per this hypothesis, high debt levels discipline managers by forcing them to make fixed debt service payments and by reducing the company’s free cash flow. The more financially levered the company is, the less freedom managers have to misuse cash. Thus, high leverage reduces agency costs.
7.1 Shareholder vs. Stakeholder Theory
Exhibit 5 from the curriculum lists the primary stakeholder groups for a company.
Shareholder theory is based on the premise that the goal of a company is to maximize shareholder returns.
Stakeholder theory is based on the premise that a company’s focus is not restricted to shareholders, but extends to other stakeholders as well such as its customers, employees, suppliers, etc.
Management’s capital structure decisions have varying effects on various stakeholder groups. Conflicts of interest may arise when attempting to maximize shareholder wealth, in which one or more groups are favored at the expense of others.
7.2 Debt vs. Equity Conflict
Other debt considerations:
7.3 Preferred Shareholders
Preferred shares are frequently referred to as “hybrid” securities because they possess both debt-like and equity-like characteristics. Failure to pay a preferred dividend is not a default event for a company, but it generally prevents common shareholders from receiving dividends until preferred shareholders are paid. Thus, preferred equity creates less risk for a company as compared to debt.
Preferred shareholders are vulnerable to decisions that increase financial leverage and risk over the long term, as this may gradually erode the company’s ability to pay preferred dividends.
7.4 Private Equity Investors/Controlling Shareholders
Shareholders who have a majority voting interest are called controlling shareholders. Sometimes, they may have goals that conflict with those of other minority shareholders.
Private equity majority shareholders frequently exercise control by appointing board members and senior management.
7.5 Bank and Private Lenders
The general perspective of debtholders also applies to bank and private lenders – Less financial leverage implies less risk and is thus preferred. However, there are stakeholder differences between holders of public debt, private debt, and bank lenders.
To make investment decisions, public market debtholders rely on public information and credit rating agencies. Because they may not hold debt securities to maturity, their returns reflect changes in the price of the securities over time rather than just the borrower’s ability to pay interest and principal.
Banks and private lenders typically hold company debt until it matures. They usually have direct access to company management as well as non-public information about the company, which reduces information asymmetries. They may also be able to exert greater influence on the company than public market debtholders.
7.6 Other Stakeholders
Customers and suppliers
Customers and suppliers invest significant time and effort in establishing vendor relationships and have a natural interest in the long-term stability of a company. This is especially true for a company that manufactures specialized products, which have a high “switching barrier.” Even if there is no actual or anticipated financial distress, financial stability can be an important vendor selection criterion.
Long-term stability, survival, and growth of a company are important considerations in attracting and retaining employees. Equity ownership is typically a minor component of compensation and a less important consideration.
Management and directors
Compensation is the primary tool used to align the interests of management, directors, and shareholders. Equity compensation can account for a sizable portion of their total compensation. However, the alignment of managers’ and shareholders’ interests is never perfect. Some examples are:
Regulators and government
Regulators and the government are often key stakeholders for a company. In some cases, the company’s capital structure is an important consideration for regulators. For example, regulators require financial institutions to maintain certain levels of solvency or capital adequacy.
In order to stay in business, distressed companies may seek government assistance. In turn the government may require new equity investments, block dividends, or otherwise limit the company’s financing decisions.