Are U.S. Multinational Corporations Becoming More Aggressive Income Shifters?

TLDR

Income shifting by U.S. multinational companies has been a growing concern for policymakers over the past two decades due to its impact on tax revenues. The paper investigates the extent of income shifting by U.S.

Abstract

ABSTRACT This paper examines income shifting of U.S. multinational companies over the past two decades. Domestic and foreign policy makers are increasingly concerned with the effect of income shifting on dwindling tax revenues, however, extant research on income shifting by U.S. multinational enterprises is mixed. We address the disconnect between the academic literature and the policy maker's perceptions by examining the extent of multijurisdictional income shifting by U.S. multinational companies. We directly address conflicting results in extant literature and show that using either multiperiod proxies or instrumental variables overcomes weaknesses of annual proxies in this setting. Our tests show that U.S. companies have become more active at shifting income out of the United States as the regulatory costs of shifting have changed. Holding tax rate differences between U.S. and foreign jurisdictions constant, our empirical estimates suggest that our sample of 380 corporations with low average foreign tax rates collectively shifts approximately $10 billion of additional income out of the United States annually during 2005–2009 relative to 1998–2002 due to varying regulatory costs of shifting.