U.S. Tax Policy and Direct Investment Abroad
NBER Working Paper No. 3049
The analysis presented in this paper shows that u.s. tax policy can have significant effects on u.s. direct investment outflows through various channels. It is stressed that a sensible choice of specification and data in an empirical model entails a rigorous examination of the theoretical underpinnings behind the model. In particular, we emphasize the difference between foreign fixed investment undertaken by the foreign subsidiary and direct investment of the entire international firm, and the need to use different theoretical frameworks in each case. We present estimated equations relating the balance of payments direct investment outflows -- distinguishing between retained Subsidiary earnings and parent transfers -- to various measures of the u.s. net rate of return and the cost of funds. The evidence shows that u.s. tax policy toward domestic investment has an important effect on direct investment outflows by influencing the relative net rate of return between the U.S. and abroad. We estimate that a 16 cent reduction in transfers made by U.S. parents firms occurs for every dollar increase in U.S. domestic investment. In contrast to previous studies, transfers equations fit much better than retained earnings equations for every net return variable used in our estimation. Of the various specifications tested, the transfers equation containing a marginal, forward-looking and corporate-investor net return variable fits best, a result which is consistent with the predictions of our theoretical framework.
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