ABSTRACT We examine the effect of compliance frictions in reclaiming foreign withholding tax overpayments on foreign portfolio investment (FPI) using data on bilateral FPI around the globe and U.S. institutional investors’ foreign holdings. Exploiting variation in withholding tax overpayments for 36 investor countries and 110 issuer countries, we find that withholding tax overpayments adversely affect FPI because of the high compliance costs to international investors in claiming foreign tax credits. Cross-sectional tests further show that the adverse effect of withholding tax overpayments on FPI is reduced when compliance costs in claiming these overpayments from foreign countries are lower. Our results indicate that eliminating most of the compliance costs in the reclaim process by implementing a relief at the source mechanism could increase FPI by about 7.6 percent. JEL Classifications: D25; G11; G25; H20; H24.

We examine how capital gains taxes affect investment in private start-up (i.e., pre-IPO) firms. Using data on capital raised in individual funding rounds, we estimate the effect of the 2010 SBJA, which implemented a full exemption from federal capital gains tax on the sale of qualified shares. Because of the resulting higher expected after-tax returns, we hypothesize and find evidence consistent with this capital gains tax reduction increasing the amount of investment in start-up firms per funding round by about 12%. The effect is stronger in start-up firms that are likely to have greater administrative capacity. We estimate that about one-third of the tax benefit is captured by investors.