CROSS-COUNTRY COMPARISONS OF CORPORATE INCOME TAXES

To our knowledge, this paper provides the most comprehensive analysis of firm-level corporate income
taxes to date. We use publicly available financial statement information for 11,602 public corporations
from 82 countries from 1988 to 2009 to estimate country-level effective tax rates (ETRs). We find
that the location of a multinational and its subsidiaries substantially affects its worldwide ETR. Japanese
firms always faced the highest ETRs. U.S. multinationals are among the highest taxed. Multinationals
based in tax havens face the lowest taxes. We find that ETRs have been falling over the last two decades;
however, the ordinal rank from high-tax countries to low-tax countries has changed little. We also
find little difference between the ETRs of multinationals and domestic-only firms. Besides enhancing
our knowledge about international taxes, these findings should provide some empirical underpinning
for ongoing policy debates about the taxation of multinationals.