TY - JOUR AU - Graham,John R. AU - Lang,Mark H. AU - Shackelford,Douglas A. TI - Employee Stock Options, Corporate Taxes and Debt Policy JF - National Bureau of Economic Research Working Paper Series VL - No. 9289 PY - 2002 Y2 - October 2002 UR - http://www.nber.org/papers/w9289 L1 - http://www.nber.org/papers/w9289.pdf N1 - Author contact info: John Graham Duke University Fuqua School of Business 100 Fuqua Drive Durham, NC 27708-0120 Tel: 919/660-7857 Fax: 919/660-8038 E-Mail: john.graham@duke.edu Douglas Shackelford University of North Carolina at Chapel Hill Kenan-Flagler Business School Campus Box 3490, McColl Building Chapel Hill, NC 27599-3490 Tel: 919/962-3197 Fax: 919/962-4727 E-Mail: doug_shack@unc.edu AB - We find that employee stock option deductions lead to large aggregate tax savings for Nasdaq 100 and S&P 100 firms and also affect corporate marginal tax rates. For Nasdaq firms, the median marginal tax rate is 31 percent when option deductions are ignored but falls to 5 percent when one accounts for the deductions. For S&P firms, however, option deductions do not affect marginal tax rates to a large degree. In the spirit of DeAngelo and Masulis (1980), option deductions are important nondebt tax shields that can affect corporate policies. We find evidence consistent with option deductions substituting for interest deductions in corporate capital structure decisions. This evidence explains in part why some firms appear to be underlevered. ER -