TY - JOUR AU - Grinblatt,Mark AU - Liu,Jun TI - Debt Policy, Corporate Taxes, and Discount Rates JF - National Bureau of Economic Research Working Paper Series VL - No. 9353 PY - 2002 Y2 - November 2002 UR - http://www.nber.org/papers/w9353 L1 - http://www.nber.org/papers/w9353.pdf N1 - Author contact info: Mark Grinblatt UCLA Anderson Graduate School of Management 110 Westwood Plaza, Box 951481 Los Angeles, CA 90095-1481 Tel: 310/825-1098 Fax: 310/206-5455 E-Mail: mark.grinblatt@anderson.ucla.edu Jun Liu Rady School of Management UCSD Pepper Canyon Hall Room 320 9500 Gilman Dr MC 0093 La Jolla CA 92093 Tel: 310/825-4083 E-Mail: junliu@ucsd.edu AB - This paper studies the valuation of assets with debt tax shields when debt policy is a general time-dependent function of the asset's unlevered cash flows, value, and history. In a continuous-time setting, it shows that the value of a project's debt tax shield satisfies a partial differential equation, which simplifies to an easily solved ordinary differential equation for most plausible debt policies. A large class of cases exhibits closed-form solutions for the value of a levered asset, the value of its tax shield, and the appropriate tax-adjusted cost of capital for discounting unlevered cash flows. ER -