Pillar Two's Global Anti-Base Erosion (GloBE) rules introduce a fifteen percent minimum effective tax rate for large multinational groups, computed on a jurisdiction-by-jurisdiction basis using a largely accounting-based methodology. Because that computation still starts from each entity's reported profit, which itself depends on the group's intercompany pricing, transfer pricing outcomes and GloBE top-up tax exposure are now structurally linked in a way earlier BEPS measures did not require groups to model together.
How GloBE Uses Transfer Pricing Outcomes
The GloBE effective tax rate calculation for a jurisdiction starts from the constituent entities' financial accounting net income, adjusted through a defined set of GloBE-specific adjustments, and that starting income figure is itself a direct product of the group's transfer pricing positions, since intercompany charges, royalties, and margins all flow straight into each entity's reported pre-tax profit. A transfer pricing adjustment that shifts profit from a high-tax to a low-tax jurisdiction, even where fully defensible under Chapter I, correspondingly shifts GloBE tax base between those same jurisdictions, potentially increasing top-up tax exposure in the low-tax jurisdiction the profit moves into.
The Consistency Requirement for Intragroup Transactions
The GloBE rules include a specific requirement that intragroup transactions be recorded consistently in both constituent entities' financial accounts at the same amount, and, notably, at an arm's length amount, for the transaction to be recognised as GloBE income and expense in the ordinary course. A transfer pricing position later adjusted by a tax authority in one jurisdiction, without a symmetrical adjustment recorded in the counterparty jurisdiction's accounts, can create a mismatch that the GloBE computation is specifically designed to catch and neutralise, effectively importing unresolved transfer pricing disputes directly into the minimum tax calculation.
Top-Up Tax Exposure from Aggressive TP Positions
A group that has historically shifted a meaningful share of profit into a low-tax jurisdiction through an aggressive, if technically defensible, transfer pricing position now faces a different economic consequence even where the position survives tax authority challenge in that jurisdiction: if the jurisdiction's effective tax rate on that profit sits below fifteen percent, GloBE top-up tax claws back the difference regardless of the local statutory rate or any local incentive that produced the low effective rate in the first place. This substantially reduces the incentive that historically drove aggressive profit allocation into low-tax jurisdictions.
Rethinking TP Positions Under a Minimum Tax Floor
Where a group's effective tax rate in a given jurisdiction is already at or above fifteen percent after GloBE adjustments, shifting additional profit into that jurisdiction through a more conservative transfer pricing position, for instance retaining a larger routine return locally rather than pushing residual profit to a principal entity elsewhere, may no longer carry the same GloBE-related downside it would in a genuinely low-tax jurisdiction, changing the calculus groups apply when weighing aggressive versus conservative TP positions across their footprint.
Coordinating the TP and Pillar Two Compliance Functions
Because GloBE computations and transfer pricing positions are now this tightly coupled, groups that continue to run TP planning and Pillar Two compliance as separate workstreams, prepared by different teams on different timelines, risk optimising one at the expense of the other, defending a transfer pricing position that is technically sound in isolation while generating an unanticipated top-up tax liability the TP team never modelled. Building a single integrated review, testing proposed TP positions against their GloBE effective tax rate impact before they are implemented, is becoming a standard expectation for groups within Pillar Two's scope.
Conclusion
GloBE's accounting-based effective tax rate calculation means every transfer pricing position a group takes now has a direct and quantifiable minimum-tax consequence, not merely a conventional TP audit risk, and the two can no longer be assessed independently. Groups within Pillar Two's scope should model the GloBE effective tax rate impact of any material transfer pricing restructuring before implementation, rather than treating minimum tax exposure as a separate compliance workstream to be reconciled after the fact.
