Pillar Two

Understanding the OECD’s Pillar Two framework

The OECD’s Pillar Two framework aims to ensure multi-national enterprises (MNEs) with global revenues above €750 million are subject to minimum tax rate on income within each jurisdiction in which they operate. Commonly referred to as BEPS 2.0, the framework imposes a Top-Up Tax on profits arising in jurisdictions where the effective tax rate (ETR) is below 15%. 

Irrespective of whether any top-up tax ends ultimately arises, Pillar Two has created a significant compliance burden for in scope MNEs. 


How are the rules being implemented?

The core elements of Pillar Two are: 

  • A Qualified Domestic Minimum Top-up Tax (QDMTT);
  • An Income Inclusion Rule (IIR), and  
  • An Undertaxed Profits Rule (UTPR). 

Implementation timelines vary by jurisdiction. Many countries have now introduced QDMTTs, IIRs and UTPRs, while others continue to enact legislation. As a result, multinational groups must monitor developments across all territories in which they operate. Over 60 countries have implemented at least one of the core elements of Pillar Two. 

Who does Pillar Two apply to?

The rules apply to MNEs (and in a number of territories wholly domestic businesses) with annual consolidated revenues of at least €750 million in at least two out of the prior four accounting periods. Every global organisation with global revenues of €750m or more will need to act to be compliant with Pillar Two. In addition, organisations that are close to the threshold will need to actively monitor whether they continue to fall outside of scope and, if on a growth trajectory, take action to prepare for Pillar Two compliance when they cross the revenue threshold. It should be noted that a group may come immediately within scope if it exceeds the threshold as a result of M&A activity rather than organic growth due to specific rules on mergers.


Pillar Two Newsletter

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More on Pillar Two – our webinar series

Please see below BDO’s webinar series exploring the Pillar Two rules. The series explores the technical and practical aspects of the rules, to enable affected organisations to prepare and respond effectively.  

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Our latest Pillar Two webinar focusses on the current state of Pillar Two around the world, and will explore how to design, implement and operationalise an effective Pillar Two tax operating model for your organisation.


Our first webinar took place on Wednesday 6 December 2023, and addressed the following topics: 

  • Scope, Design, Basic computation principles for determination of the effective rate of tax and Examples of potential rate impacting transactions 

  • Forthcoming financial statement disclosure obligations for periods ending on or after 31 December 2023 

  • A suggested roadmap to compliance to include: An overview of safe harbours that may simplify compliance processes, and how to prepare for and undertake initial calculations. 

For detailed insight into Pillar Two across the US, EMEA and Asia Pacific, watch our webinar from January 2024: 


In February 2024, we investigate the role of Technology in Pillar Two compliance and the different approaches international businesses can take:


We’ll focus on the details of getting Pillar Two right, including returns, elections and disclosures and other reporting obligations. Scheduled for May 2024 



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Key Contact

Ross Robertson

Ross Robertson

International Tax Partner, BDO UK
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