Will the OECD's Pillar Two (Global Minimum Corporate Tax rate of 15%) be fully implemented by countries representing over 80% of global GDP before the end of 2027?

Global Tax: Pillar Two Nears Completion by 2027?

Pillar Two, which establishes a 15% minimum corporate tax rate for large multinational enterprises (MNEs), began phased implementation in 2024 and continues into 2025. This prediction asks if the legislative adoption across countries making up 80% of global GDP will be complete by the end of 2027.

Strong Global Momentum

The high 'Yes' vote is due to the strong political momentum, particularly in the European Union, which has mandated its 27 member states to adopt the rules. Given the EU's massive economic footprint, coupled with early adopters like the UK, Japan, and Korea, the 80% GDP threshold is highly attainable, even if the US remains a legislative holdout.