Trump advances international tax agenda with revised GloBE Information Return

The US Treasury Department has overhauled the Global Anti-Base Erosion Information Return, giving American multinational companies a way to comply with global minimum tax rules without getting crushed by redundant paperwork. The revisions, announced on September 11, create what Treasury calls a “side-by-side” safe harbor, a mechanism that lets US-headquartered groups opt into compliance primarily under domestic global minimum tax laws.

In practical terms, that means US companies can now sidestep key provisions of the OECD’s Pillar Two framework, specifically the Income Inclusion Rule and the Undertaxed Profits Rule, if they’re already meeting minimum tax requirements at home.

What the revised GIR actually changes

The original GloBE Information Return, adopted in January 2025 under the Biden administration, assumed that US corporate groups would need to comply fully with the OECD’s Pillar Two regulations. That created a layering problem: American companies were potentially subject to both domestic minimum tax obligations and overlapping international ones, with all the filing headaches that entails.

The new version flips that assumption. Under the safe harbor election, US multinationals that satisfy domestic minimum tax thresholds can effectively treat their US tax compliance as sufficient, avoiding duplicative exposure to IIR and UTPR liabilities imposed by other jurisdictions.

Beyond the safe harbor, the revised GIR introduces standardized jurisdictional reporting designed to consolidate what had been a patchwork of local filing demands across multiple countries.

The updates also build in explicit protections for US substance-based tax incentives. The R&D tax credit gets specific safeguards under the new framework.

A policy reversal with geopolitical teeth

These revisions flow from a broader OECD/G20 Inclusive Framework agreement reached in January 2026, involving over 145 countries. That deal set the stage for how nations would coordinate their approaches to the 15% global minimum corporate tax.

Treasury Secretary Scott Bessent framed the changes as advancing President Trump’s international tax objectives. Where the Biden Treasury pushed for full integration with Pillar Two, the current team is carving out space for US companies to operate under a primarily domestic compliance regime.

What this means for US multinationals and investors

The technology and manufacturing sectors stand to benefit disproportionately. These industries rely heavily on R&D tax credits, and the explicit protections in the revised GIR mean those incentives won’t be undermined by global minimum tax calculations.

The risk is retaliation. If major trading partners view the safe harbor as a backdoor exemption from global minimum tax commitments, they could impose their own compensatory measures, including applying the UTPR to US companies regardless of the safe harbor election. That scenario would recreate exactly the kind of overlapping compliance burden the Treasury is trying to eliminate.