Debt Management Under Corporate and Personal Taxation
发现公司长期债务会产生一个有价值的税收时机选择期权，即使利息不可抵税，杠杆也能通过该期权增加公司价值，利率和债券价格波动越大，期权价值越高。
The presence of long-term debt in a corporation's capital structure is shown to give rise to a valuable tax-timing option that can be exercised by the firm on behalf of its shareholders. This option, which is not available if the firm is fully equity financed, implies that leverage will have a positive tax effect on total firm value even if there is no such effect associated with the tax deductibility of the coupon interest payments on debt. The more volatile interest rates and bond prices are, the more valuable the tax-timing option and the larger the favorable impact of debt on shareholder wealth.