By Gabriela Bittencourt – Senior Manager, International Tax
Pillar 2 of the OECD demonstrates in practice that the concept of global minimum taxation is far more complex than it appears. Although the proposal is straightforward, ensuring a global minimum tax rate of 15% for multinational groups, the application of the GloBE rules involves a high level of technical detail and a direct impact on companies’ tax structures.
The first step is clear: understanding whether the group falls within scope. Generally, groups with consolidated revenue exceeding €750 million may be subject to the rules. However, being within scope is only the beginning, the critical point is assessing exposure to the so-called Top-up Tax.
The Top-up Tax arises when the effective tax rate in a given jurisdiction falls below the global minimum, triggering the need for a tax complement. This means that local tax decisions begin to have global implications, requiring an integrated view of the group’s overall tax burden.
In this context, the so-called Safe Harbours take on a prominent role. Designed to simplify the application of the rules, they allow, in certain cases, for the reduction or even elimination of the need for full calculations. The transitional regime based on the Country-by-Country Reporting (CbCR) is one example, provided that specific criteria relating to revenue, profitability and level of taxation are met.
In practice, however, Safe Harbours do not eliminate complexity. Eligibility validation requires in-depth technical analysis and, in many cases, the effort involved approaches that of a full GloBE calculation.
Given this scenario, preparation is essential. MCS Markup supports multinationals in assessing their exposure to the Top-up Tax and understanding the potential impacts.
More than a compliance topic, Pillar 2 is a strategic matter. The central question is not only whether the company is within scope, but whether it is prepared to manage its impacts.
