An Empirical Model of Optimal Capital Structure1

The authors provide a reasonably user‐friendly and intuitive model for arriving at a company's optimal, or value‐maximizing, leverage ratio that is based on the estimation of company‐specific cost and benefit functions for debt financing. The benefit functions are downward‐sloping, reflecting the drop in the incremental value of debt with increases in the amount used. The cost functions are upward‐sloping, reflecting the increase in costs associated with increases in leverage. The cost functions vary among companies in ways that reflect differences in corporate characteristics such as size, profitability, dividend policy, book‐to‐market ratio, and asset collateral and redeployability. The authors use these cost and benefit functions to produce an estimate of a company's optimal amount of debt. Just as equilibrium in economics textbooks occurs where supply equals demand, optimal capital structure occurs at the point where the marginal benefit of debt equals the marginal cost. The article illustrates optimal debt choices for companies such as Barnes & Noble, Coca‐Cola, Six Flags, and Performance Food Group. The authors also estimate the net benefit of debt usage (in terms of the increase in firm or enterprise value) for companies that are optimally levered, as well as the net cost of being underleveraged for companies with too little debt, and the cost of overleveraging for companies with too much. One critical insight of the model is that the costs associated with overleveraging appear to be significantly higher, at least for some companies, than the costs of being underleveraged.     

Capital Gains Taxes and Equity Trading: Empirical Evidence

Individual investors have an incentive to defer selling appreciated stock until it qualifies for tax‐favored, long‐term capital gains treatment. Shackelford and Verrecchia [2002] show that these incentives can affect equity trading around public disclosures. This article provides some empirical support for their theory with evidence of price increases and equity constrictions around announcements of quarterly earnings and additions to the S&P 500 index. We find share returns rise and trading volume falls with the incremental taxes saved by deferring the sale of appreciated property. The price increases, however, are temporary, reversing in subsequent trading days. The results are consistent with buyers believing the compensation to sell before long‐term qualification (through higher prices) is less costly than holding an inappropriately weighted portfolio. This finding—that personal capital gains taxes affect equity trading—adds to a growing literature that challenges longstanding assumptions that firm value is independent of shareholders and their taxes.     

Local Taxes and Capital Structure Choice

This paper investigates the question of taxation and capital structure choice in Germany. Germany represents an excellent case study for investigating the question of whether and to what extent taxes influence the debt-equity decision of firms, because the relative tax burdens on debt and equity vary greatly across communities. German communities levy local taxes on profits and long-term debt payments in addition to personal and corporate taxes on the federal level. A stylized model is presented incorporating these taxes. The model shows that local taxes create substantial incentives for firms to use debt financing. Furthermore, the paper empirically investigates the effect of local business taxes on the share of debt used to finance incremental investments by German firms. I find that local taxes significantly influence the capital structure choice of firms, controlling for a large number of other factors. In an extensive sensitivity analysis the tax effect are found to be robust across several different specifications.     

Control Rights and Capital Structure: An Empirical Investigation

We show that incentive conflicts between firms and their creditors have a large impact on corporate debt policy. Net debt issuing activity experiences a sharp and persistent decline following debt covenant violations, when creditors use their acceleration and termination rights to increase interest rates and reduce the availability of credit. The effect of creditor actions on debt policy is strongest when the borrower's alternative sources of finance are costly. In addition, despite the less favorable terms offered by existing creditors, borrowers rarely switch lenders following a violation.     

An Empirical Test of Ross's Cash Flow Beta Theory of Capital Structure

This paper empirically investigates Ross's cash flow beta theory of capital structure. Ross hypothesizes that, for firms of similar cash flow variance, there will be an inverse relationship between financial leverage and cash flow beta. This paper provides empirical support for Ross's theory, though the extent of the support depends upon the sample period and the leverage specification.     

Influence Costs and Capital Structure

This paper analyzes the role of capital structure in the presence of intrafirm influence activities. The hierarchical structure of large organizations inevitably generates attempts by members to influence the distributive consequences of organizational decisions. In corporations, for example, top management can reallocate or eliminate quasi rents earned by their employees, while at the same time, they must rely on these employees to provide them with information vital to their decision making. This creates the opportunity for lower level managers to influence top management's discretionary decisions. As a result, divisional managers may attempt to inflate the corporate perception of their relative contributions to the firm, or to take actions that make the elimination of their rents more costly for the firm. This incentive to influence is especially acute when managers fear losing their jobs, for example in the event of a divestiture. Since the firm's capital structure can affect future divestiture decisions, it can be chosen to reduce or increase the divisional managers' incentives to influence top management's decisions. The control of influence activities arises at the expense of restrictions on future divestiture decisions. Hence, there emerges an optimal capital structure that trades off the costs of influence activities against the costs of making poor divestiture decisions. The findings suggest that capital structure can also be chosen to control influence activities that arise under less extreme motivations. We identify several key factors that determine the optimal capital structure: the top management's prior assessment of the likelihood that it will be optimal to divest a specific division; the costs of influence activities to the firm and to the divisional managers; and the difference in the valuation of the division's assets in the current firm and under alternative uses.     

Optimal Capital Income Taxes and Capital Controls in Small Open Economies

This paper studies the optimal taxation of capital income in a simplemodel of a small open economy where domestic residents can evade taxeson their foreign investment income. The national government can onlytax domestic capital income and can impose capital controls, whichhowever absorb real resources. The design of optimal policy in thismodel depends on the revenue needs of the government. For relativelylow levels of government expenditures, it turns out that the countrydoes not levy capital income taxes but may restrict capital exports.Otherwise, the country taxes domestic capital income and sets capitalcontrols such that capital exports are driven to zero, at an optimum.In contrast to other models with capital controls it turns out thatthis policy can lead to underinvestment in domestic capital.JEL Classification Number: E 62, F 41, H 21     

Agency Costs, Risk Management, and Capital Structure

The joint determination of capital structure and investment risk is examined. Optimal capital structure reflects both the tax advantages of debt less default costs (Modigliani and Miller (1958, 1963)), and the agency costs resulting from asset substitution (Jensen and Meckling (1976)). Agency costs restrict leverage and debt maturity and increase yield spreads, but their importance is small for the range of environments considered. Risk management is also examined. Hedging permits greater leverage. Even when a firm cannot precommit to hedging, it will still do so. Surprisingly, hedging benefits often are greater when agency costs are low.     

Firing Costs and Capital Structure Decisions

I exploit the adoption of state‐level labor protection laws as an exogenous increase in employee firing costs to examine how the costs associated with discharging workers affect capital structure decisions. I find that firms reduce debt ratios following the adoption of these laws, with this result stronger for firms that experience larger increases in firing costs. I also document that, following the adoption of these laws, a firm's degree of operating leverage rises, earnings variability increases, and employment becomes more rigid. Overall, these results are consistent with higher firing costs crowding out financial leverage via increasing financial distress costs.     

Securitization and Capital Structure in Nonfinancial Firms: An Empirical Investigation

Contrary to recent accounts of off‐balance‐sheet securitization by financial firms, we show that asset securitization by nonfinancial firms provides a valuable form of financing for shareholders without harming debtholders. Using data from firms’ SEC filings, we find that securitization is attractive to firms in the middle of the credit quality distribution, which are the firms with the most to gain. Upon initiation, firms experience positive abnormal stock returns and zero abnormal bond returns, and largely use the securitization proceeds to repay existing debt. Securitization minimizes financing costs by reducing expected bankruptcy costs and providing access to segmented credit markets.     

Equity Markets, Transactions Costs, and Capital Accumulation: An Illustration

Poorly developed equity markets inhibit the transfer of capitalownership. Moreover, the costs of transacting in equity marketsaffect not just the level of investment, but the kinds of investmentsthat are undertaken. Once equity markets allow the ownershipof capital to be transferred economically, reductions in coststend to favor the use of longer-maturity investments. When thereis a relationship between the maturity of an investment andits productivity, transactions cost reductions are conduciveto observing certain kinds of increases in productive efficiency.This article analyzes savings, investment, and consumption decisionsby using an overlapping generations model with two-period-livedagents. The analysis allows for several technologies for convertingcurrent output into future capital that vary by productivityand maturity, and it makes ownership of capital costly to transfer.A reduction in transactions costs will typically alter the compositionof savings and investment, and have potentially complicatedconsequences for capital accumulation and steady-state output.     

Taxes and the Capital Structure of Partnerships,REIT's,and Related Entities

Academic finance has explored the effect of taxes on corporate capital structure in great detail. By contrast, the effect of taxes on the capital structure of partnerships, REIT's, and related entities has received little attention. The present paper shows that, under general conditions, the values of partnerships and REIT's are invariant to leverage, contradicting the sparse literature in the area. A proof similar to that of Modigliani-Miller is employed. The effect of real world imperfections is also examined.     

资本监管与银行最优资本结构

资本监管已成为现代商业银行监管体系的核心,而现有研究对资本监管的重要性缺乏系统的理论研究。基于此,本文从MM理论出发,逐步分析并得出:银行自身经营的特殊性、银行作为一般企业所追求的企业价值最大化行为以及银行作为特殊企业所得到的银行安全网保护等因素使得银行形成不断提高最优资产负债率和降低资本充足率的内在机制,逐步分析不同情形下的银行最优资本结构,进而说明资本监管对于维系银行经营的稳健性和审慎性以及减少银行破产而导致的负外部性等方面的重要作用。     

Term Structure Multiplicity and Clientele in Markets with Transactions Costs and Taxes

The authors investigate term structure with realistic transactions costs and taxes. Its properties are derived from a certain no-arbitrage condition via duality theory in convex programming. Transactions costs imply an infinite multiplicity of term structures. A simple example with realistic transactions costs shows that this multiplicity can induce a valuation range of over 277 basis points. Transactions costs also allow equilibrium without short sale restrictions. The authors find the minimum transactions costs that prevent arbitrage. In addition, the exact conditions for weak clientele, in which investors will not buy some bonds and may not sell any that they already hold, are established.     

煤炭行业上市公司资本结构影响因素的实证分析

以沪深两市29家煤炭行业上市公司为研究样本,采用因子分析和多元回归方法对煤炭行业上市公司资本结构的影响因素进行了实证研究,分析结果显示:资产流动性、成长性和盈利能力对资本结构的影响比较显著,企业规模、非债务税盾以及资产担保价值对上市公司资本结构的影响并不显著。并且成长性、非债务税盾、资产担保价值与公司的资本结构成正相关关系,其余变量则呈负相关关系。     

Corporate Capital Structure,Agency Costs,and Ownership Control: The Case of All-Equity Firms

This paper provides evidence that all-equity firms exhibit greater levels of managerial stockholdings, more extensive family relationships among top management, and higher liquidity positions than a matched sample of levered firms. Further, top managers of all-equity firms with family involvement in corporate operations have greater control of corporate voting rights than managers of all-equity firms without family involvement. These findings are consistent with the interpretation that managerial control of voting rights and family relationships among senior managers are important factors in the decision to eliminate leverage.     

不同行业内公司之间资本结构差异研究——以中国上市公司为例

本文对不同行业内公司之间的资本结构差异情况以及产生这些差异的原因进行了一定的探讨。研究表明,产品市场竞争、代理问题、发展机会、资产流动性等行业特征以及行业内公司特征存在的极大差异是造成行业内公司之间资本结构差异的主要原因。     

节税收益、破产成本与最优资本结构

本文在正确定义债务的节税收益和破产成本的基础上,运用实物期权定义并定量描述了破产成本,进而建立了确定最优资本结构的ZZ杠杆模型。将自变量的典型值代入模型得出的最优债务比率与以往的实际调查数据非常接近,从而使一些长期难以解释的"资本结构之谜",例如"财务保守行为"等得到了一个合理的解释。     

Optimal Capital Structure,Endogenous Bankruptcy,and the Term Structure of Credit Spreads

This article examines the optimal capital structure of a firm that can choose both the amount and maturity of its debt. Bankruptcy is determined endogenously rather than by the imposition of a positive net worth condition or by a cash flow constraint. The results extend Leland's (1994a) closed-form results to a much richer class of possible debt structures and permit study of the optimal maturity of debt as well as the optimal amount of debt. The model predicts leverage, credit spreads, default rates, and writedowns, which accord quite closely with historical averages. While short term debt does not exploit tax benefits as completely as long term debt, it is more likely to provide incentive compatibility between debt holders and equity holders. Short term debt reduces or eliminates “asset substitution” agency costs. The tax advantage of debt must be balanced against bankruptcy and agency costs in determining the optimal maturity of the capital structure. The model predicts differently shaped term structures of credit spreads for different levels of risk. These term structures are similar to those found empirically by Sarig and Warga (1989). Our results have important implications for bond portfolio management. In general, Macaulay duration dramatically overstates true duration of risky debt, which may be negative for “junk” bonds. Furthermore, the “convexity” of bond prices can become “concavity.”