TY  - JOUR
AU  - Downs,Thomas
AU  - Hendershott,Patric H.
TI  - Tax Policy and Stock Prices
JF  - National Bureau of Economic Research Working Paper Series
VL  - No. 2094
PY  - 1987
Y2  - October 1987
UR  - http://www.nber.org/papers/w2094
L1  - http://www.nber.org/papers/w2094.pdf
N1  - Author contact info:
Patric H. Hendershott
Fisher Hall
Ohio State University
2100 Neil Avenue
Columbus, OH 43210
Tel: 218/963-1393
Fax: 218/963-9484
E-Mail: hendershott.2@osu.edu
AB  - Windfall profits and losses accrue to investors only when expected after-tax returns or discount rates change, and major tax policy shifts are likely to alter these variables. This study introduces a cashflow valuation model for estimating the windfalls to owners of U.S. nonfinancial corporations caused by the enactment of tax changes. The model is illustrated by analysis of two reform packages, the Treasury Proposal of November 1984 and the Tax Reform Act of 1986. We find that the original Treasury plan would have boosted stock prices by 20 to 30 percent; an increase of 10 to 12 percent is computed for the Tax Reform Act of 1986. This anomalous result -- a $125 to $140 billion dollar corporate tax increase (over five years) raising stock prices -- occurs because the tax increase is on new capital, not old capital. The stock market largely values expected returns on the existing capital stock, and these returns benefit from the adverse treatment of new investment.
ER  -