Switzerland and the OECD Digital Economy Tax: Where Pillar 1 and Pillar 2 Stand Now
Switzerland's State Secretariat for International Finance (SIF) has published a detailed position statement confirming the current status of both pillars of the OECD/G20 framework for taxing the digitalised economy. The headline: Pillar 2's 15% global minimum tax has been in force in Switzerland since 1 January 2024, the primary international top-up levy followed from 1 January 2025, and a cross-border information-exchange mechanism is due to activate no earlier than 1 July 2026. Pillar 1, the more complex reallocation of taxing rights, remains unfinished. For accounting firms, auditors, and CFOs whose clients span borders, the gap between these two tracks creates material compliance asymmetry that demands attention now.
The OECD Two-Pillar Framework: What It Is and Why It Matters
The Inclusive Framework of the OECD/G20 (IF) brings together more than 140 member countries, Switzerland included. In October 2021, 137 of those members, covering all OECD, G20, and EU states, agreed on a two-pillar solution to address the tax challenges that digitalisation creates. The original impetus was straightforward: digital business models allow companies to generate significant revenue in a country without maintaining a traditional taxable presence there. Individual states responded by introducing unilateral digital services taxes, which threatened fragmentation and double taxation. The two-pillar approach was designed to replace that patchwork with a single, consensus-based regime.
Critically, SIF emphasises that the new rules are not confined to large technology platforms. The entire increasingly digitalised international economy falls within scope. That scope shift is the first thing practitioners need to communicate to clients who assume the framework targets only Silicon Valley giants.
Pillar 1: Reallocation of Taxing Rights, Still Unresolved
Pillar 1 addresses which country gets to tax which slice of a multinational's profits. It operates through two mechanisms, Amount A and Amount B, which have very different implementation statuses.
Amount A: A New Taxing Right for Market States
Amount A creates a new right for consumer or market-state jurisdictions to tax a portion of the profits of very large multinationals. The threshold is demanding: annual turnover above 20 billion euros and a profit margin exceeding 10 percent. Companies meeting both tests would be required to allocate a defined share of residual profit to the jurisdictions where their customers are located, regardless of where the company is legally established or where its servers sit.
Implementing Amount A requires a Multilateral Convention (MLC). Negotiations within the OECD's Task Force on the Digital Economy have been running since November 2021. SIF states plainly that, at the IF level, a final package for Pillar 1 has not yet been adopted. Should agreement eventually be reached, Switzerland's Federal Council would decide whether to sign the MLC, and any ratification would then require parliamentary approval. Domestic stakeholders are part of that process. In short, Amount A is not imminent. Firms should monitor IF communications but are not required to restructure anything yet.
Amount B: Simplified Transfer Pricing for Baseline Activities
Amount B is the less-discussed element of Pillar 1. It provides a simplified approach to applying the arm's length principle to certain routine distribution and marketing activities within multinational groups. The arm's length principle requires that intra-group transactions be priced as if conducted between independent parties. Amount B would create a standardised return for qualifying baseline activities, reducing disputes and compliance costs for both taxpayers and tax authorities. Unlike Amount A, Amount B does not require the MLC and can be adopted unilaterally by jurisdictions. Its implementation trajectory is therefore separate and potentially faster, though SIF does not provide a Swiss adoption timeline.
Pillar 2: Minimum Tax Is Already Live in Switzerland
While Pillar 1 negotiations stall, Pillar 2 has moved decisively. The sequence of Swiss legislative steps is worth mapping precisely, because each stage carries different compliance triggers.
The Constitutional and Legislative Pathway
The OECD published model rules for Pillar 2 in December 2021, followed by commentary in March 2022, updated in April 2024 and in May 2025. In January 2022, the Federal Council decided to proceed with implementation. Parliament approved a constitutional amendment in December 2022, and Swiss voters ratified it in June 2023. That constitutional change is the legal foundation for both pillars within Swiss domestic law.
On 22 December 2023, the Federal Council decided to bring minimum taxation into force from 1 January 2024, initially through a temporary ordinance. Permanent legislation is being enacted through the normal parliamentary process. The threshold mirrors the OECD model: multinational groups with consolidated revenue of at least 750 million euros fall within scope.
Primary vs Secondary Top-Up Tax
On 4 September 2024, the Federal Council adopted two distinct decisions. First, it confirmed that Switzerland would implement the primary international supplementary tax (the Income Inclusion Rule, or IIR) from 1 January 2025. Second, it confirmed that Switzerland would not, for the time being, implement the secondary international supplementary tax (the Undertaxed Profits Rule, or UTPR). The UTPR acts as a backstop: it allows a country to collect top-up tax on profits of a multinational group that have not been adequately taxed elsewhere. Switzerland's decision to hold back on the UTPR reflects its longstanding preference for protecting competitiveness while meeting minimum international standards.
For clients with Swiss parent entities, the IIR being live means Swiss authorities can now charge top-up tax on low-taxed foreign subsidiaries. For clients with Swiss subsidiaries of foreign-headquartered groups, the absence of the UTPR means Switzerland will not currently levy a backstop charge on profits that another jurisdiction has left undertaxed, though this position could change.
The 2026 Information Exchange Mechanism
The most immediate forward-looking date in the SIF statement is 1 July 2026. On 12 September 2025, the Federal Council adopted the dispatch approving the international legal basis for information exchange relating to the OECD minimum tax. The practical effect is significant: in the future, MNE groups will be able to file their global information centrally in a single jurisdiction rather than submitting separate reports in every country where they operate. That information is then shared automatically between participating authorities.
The mechanism cannot activate before 1 July 2026. However, the groundwork being laid now means that data architecture, intercompany documentation, and jurisdictional filing strategies need to be assessed before that date, not after. For firms using crypto accounting software or digital asset accounting software to manage cross-border client books, this is a concrete prompt to verify that the relevant entity-level and group-level data can be extracted in formats compatible with the emerging reporting standards. The OECD's administrative guidance on Pillar 2, updated as recently as May 2025, continues to refine the operational details of what that exchange will require.
What This Means for Accounting Firms and CFOs
Immediate Compliance Obligations
For any client group clearing the 750 million euro revenue threshold, the Pillar 2 qualified domestic minimum top-up tax (QDMTT) has been in force since 1 January 2024 under Swiss law. The IIR has applied since 1 January 2025. Firms need to confirm that current-year provisions and financial statement disclosures reflect both charges correctly. The temporary ordinance regime means some technical details remain subject to revision as permanent legislation progresses, so disclosures should flag residual uncertainty appropriately under IAS 12 or Swiss GAAP FER, depending on the reporting framework in use.
Transfer Pricing and Amount B Readiness
Even before Amount B achieves formal adoption, clients with baseline distribution or marketing activities within their groups should be reviewing whether their existing transfer pricing documentation would qualify under the simplified framework. Doing that analysis now avoids a scramble if Switzerland moves quickly once IF-level consensus is reached.
Technology and Data Infrastructure
The centralised filing and information-exchange model that arrives no earlier than July 2026 presupposes that groups can produce consistent, jurisdiction-level data on a timely basis. Firms whose clients hold digital assets as part of treasury or operational activity face an additional layer of complexity: token valuations, staking income, and DeFi positions need to be accurately captured in the group's tax base. Robust crypto bookkeeping software integrated with the broader ERP and tax provision workflow is not optional at this stage, it is a prerequisite for meeting the data-quality expectations that the new exchange mechanism will impose. For context on how FINMA approaches the broader Swiss digital asset environment, our analysis of FINMA 2025 supervision findings on digital asset risk sets out the regulatory backdrop that sits alongside these tax developments.
Pillar 1 Monitoring
Clients with turnover above 20 billion euros and margins above 10 percent should be tracking IF negotiations actively, even though no agreement is final. The gap between current law and any future MLC could be narrow if negotiations accelerate. Switzerland's position, favouring consensus-based decision-making and a dispute settlement mechanism, suggests Bern will not act unilaterally, but the Federal Council will need to move quickly once an IF package is finalised. Our coverage of how Swiss financial intermediaries are navigating sanctions compliance illustrates the speed at which Swiss regulatory change can move from federal decision to operational obligation.
FAQ
Which Swiss companies are in scope for the Pillar 2 minimum tax right now?
Multinational groups with consolidated annual revenue of at least 750 million euros fall within scope. Both the qualified domestic minimum top-up tax and the Income Inclusion Rule (primary international supplementary tax) are currently active in Switzerland. Groups below that threshold are not affected by Pillar 2, though they remain subject to ordinary Swiss corporate tax rules.
Switzerland has not implemented the UTPR. Does that create a gap for affected groups?
The decision not to implement the Undertaxed Profits Rule (UTPR) for now means Switzerland will not levy a backstop charge on profits of a multinational group that another country has left undertaxed. However, other jurisdictions that have adopted the UTPR could still apply it to profits connected to Switzerland, so groups should not assume the absence of the Swiss UTPR removes all UTPR exposure globally.
What is the practical effect of the July 2026 information-exchange mechanism?
Once active, MNE groups subject to Pillar 2 will be able to submit their global minimum-tax information centrally in one jurisdiction, which then shares it automatically with other participating countries. This reduces duplicative filing but raises the bar on data quality and consistency. Groups should be building the systems and documentation now to meet those requirements on activation.
How does Amount B differ from Amount A, and should clients act on it now?
Amount A creates a new taxing right for market states over large multinationals' profits and requires a multilateral convention to implement. Amount B provides a simplified transfer pricing method for baseline distribution and marketing activities and can be adopted by individual jurisdictions without the MLC. Switzerland has not yet announced a specific Amount B adoption date, but reviewing whether existing transfer pricing aligns with the simplified framework is a sensible preparatory step for affected groups.
Does the OECD digital economy tax framework affect companies that hold or transact in digital assets?
Yes, indirectly but materially. The Pillar 2 tax base is computed at the group level using financial accounting profit as the starting point, with defined adjustments. Digital asset holdings, staking rewards, and gains or losses on crypto disposals all flow into that financial profit figure. Accurate, auditable treatment of those items in the group accounts directly affects the Pillar 2 effective tax rate calculation and, by extension, whether a top-up tax is owed in any jurisdiction.