IMF Warns Tax Competition Reshapes Global Investment

IMF flags cross-border effects of corporate taxation

According to the International Monetary Fund, the way countries tax corporate earnings produces effects that cross national borders, operating via profit shifting, the reallocation of investment and transfers of knowledge. In a chapter prepared for its October 2026 World Economic Outlook, titled "Intangible Yet Real: Spillovers from Corporate Income Taxation," the fund observed that competition over tax rates continues to shape the world economy, though the way it plays out has evolved. The authors pointed to globalized production, the expansion of multinational firms and the rising significance of intangible assets as forces that reshaped corporate income taxation.^[S1]

The fund stated that multinational companies generate over 20% of world gross domestic product and roughly 15% of corporate profits globally. Its research found that when corporate income tax rules differ between countries, spillovers arise because multinationals move profits and investments to jurisdictions where tax obligations are lower. The report further cautioned that cutting taxes while relying on borrowed money pushes up interest rates worldwide and displaces investment in other economies.^[S1]

Investment effects and anti-avoidance measures

The researchers stressed that tougher measures against tax avoidance sustain economic activity while safeguarding government revenue. The organization also estimated that when one country raises its corporate income tax rate by a single percentage point above the level prevailing elsewhere, foreign direct investment inflows into that country fall cumulatively by roughly 0.5% of gross domestic product over a three-year period.^[S1]