What happened

The biggest tax project of the decade just bent. Under a "side-by-side" agreement inside the OECD/G20 Inclusive Framework, US-headquartered companies will stay subject only to US minimum taxes while being fully excluded from the two enforcement rules at the heart of the global minimum tax (Pillar Two): the Income Inclusion Rule and the Undertaxed Profits Rule. The more than 145 other countries in the framework continue under Pillar Two.

Why it matters

Pillar Two was designed to end the race to the bottom by putting a 15% floor under the tax large multinationals pay, wherever they book profits. Carving out the single largest source of multinationals softens that floor and reopens the very question the reform was meant to settle: who gets to tax global profits, and where.

Who is affected

Revenue-hungry developing economies, Nigeria included; other framework members now applying the rules to non-US groups; multinationals structuring across borders; and the tax authorities working to protect their base.

Likely impact

Expect a more fragmented system: two parallel sets of rules, more disputes over which profits belong to which country, and pressure on countries like Nigeria to lean on their own domestic minimum-tax and top-up mechanisms to capture revenue Pillar Two might otherwise have secured. For import- and investment-dependent economies, certainty just got more expensive.

VOG Global stance

Tax sovereignty cuts both ways. If the world accepts that the United States may shield its multinationals under its own minimum tax, then Nigeria is equally entitled to build and enforce a credible domestic top-up tax so that profits earned here are taxed here. The lesson of Pillar Two is not that global coordination failed; it is that every serious economy needs its own minimum-tax architecture. Nigeria's reform agenda under the NTA 2025 framework and the Nigeria Revenue Service should treat this as a prompt to close gaps, not widen them.

Closing question

If the biggest economies now tax their own multinationals on their own terms, should Nigeria accelerate its own minimum-tax rules to protect what is earned on our soil?

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