On 9 June 2026, Singapore opened a public consultation on the Finance (Income Taxes) Bill 2026, a package of 22 proposed amendments to the existing Multinational Enterprise (Minimum Tax) Act 2024 that would introduce, among other measures, a Side-by-Side Safe Harbour and a GloBE information return exchange framework. The Bill is not yet law, and its final shape will depend on the outcome of the consultation process. International groups with operations in Singapore should assess their exposure now, given the potential interaction of these proposals with existing tax structuring arrangements and anti-avoidance rules.
Background: Singapore's Pillar Two Framework
Singapore enacted the Multinational Enterprise (Minimum Tax) Act 2024 to give domestic effect to the OECD's Pillar Two framework, introducing an Income Inclusion Rule (IIR) and a domestic top-up tax. The Inland Revenue Authority of Singapore (IRAS) administers these rules and has been the principal point of contact for groups seeking guidance on compliance obligations arising from that Act.
The Finance (Income Taxes) Bill 2026 builds on that foundation. It does not replace the 2024 Act but proposes targeted amendments intended to refine how Singapore-based entities and their foreign affiliates interact with the global minimum tax regime. For groups managing tax risk management across Asia-Pacific structures, the Bill's proposed changes represent a material development worth tracking closely.
What the Bill Proposes
The consultation document covers 22 amendments. The two measures most relevant to international groups are:
- Side-by-Side Safe Harbour: A qualifying simplification mechanism designed to reduce the compliance burden for groups that can demonstrate their effective tax rate in a jurisdiction meets the safe harbour conditions. The precise thresholds and qualifying conditions are set out in the Bill as proposed; final parameters remain subject to the consultation outcome and are not yet settled law.
- GloBE Information Return Exchange Framework: Provisions to align Singapore's domestic reporting architecture with the international framework for exchanging GloBE information returns between tax authorities. This has direct implications for how IRAS will share and receive data with counterpart authorities, including those in jurisdictions where groups hold intermediate holding structures or operate under a tax treaty.
The remaining 20 amendments address a range of technical and administrative matters. Details of all proposed changes are available through IRAS and the Ministry of Finance's consultation materials.
Who Is Affected
The proposals are most immediately relevant to:
- Multinational groups with a Singapore ultimate parent entity or an intermediate parent entity in Singapore that is subject to the IIR under the 2024 Act.
- Groups relying on Singapore holding or financing structures that interact with the domestic top-up tax calculation.
- Treasury and tax teams that have already built transfer pricing documentation and GloBE information return processes on the assumptions embedded in the 2024 Act.
- Groups with parallel obligations in other jurisdictions – for example, those monitoring the EU's comparable reporting cycle (see our alert on First GloBE Information Returns 2026 in the EU) – where exchange of information under the new framework could affect the consolidated picture.
Corporate entities registered with ACRA and financial institutions regulated by MAS are not exempt from the minimum tax rules where they form part of a qualifying multinational group. The fact that an entity is primarily supervised by MAS does not displace the IRAS-administered minimum tax obligations.
Immediate Action Items for International Companies
The consultation opened on 9 June 2026. Companies should not wait for the Bill to be enacted before taking preparatory steps. Five actions warrant attention now:
- Review eligibility for the proposed Side-by-Side Safe Harbour. Map your Singapore entities' effective tax rate positions against the proposed safe harbour conditions as published. If the safe harbour could reduce filing and top-up tax obligations, model the impact before the consultation closes so that you can respond with informed observations if appropriate.
- Audit your GloBE information return data flows. The exchange framework will affect what IRAS shares with other tax authorities and what it receives. Confirm that your transfer pricing and GloBE data is consistent across all jurisdictions where returns are or will be filed, including those covered by an applicable tax treaty.
- Stress-test existing tax structuring assumptions. If your Singapore structure was designed around the 2024 Act, the 22 proposed amendments may alter how certain income items are characterised or how the top-up tax calculation interacts with foreign taxes. Engage your tax counsel to rerun the analysis against the proposed text.
- Assess exposure to anti-avoidance rules in context. The Bill is being developed alongside increased international scrutiny of arrangements that produce low-taxed outcomes. Structures that were compliant under the 2024 Act may attract closer attention under an amended regime, particularly where cross-border profit allocation is involved.
- Monitor the consultation timetable and respond if affected. The Bill is not law. Stakeholders have an opportunity to submit views to IRAS. If your group's Singapore operations are materially affected by the proposed safe harbour parameters or the exchange framework, consider whether a formal consultation response is warranted.
If you would like to discuss how the proposed amendments may affect your Singapore operations or broader Asia-Pacific tax structuring, our team is available to assist. Please contact us at info@ferrazwhitmore.com or visit our contacts page.
Interaction with Other Jurisdictions
Singapore is not acting in isolation. The GloBE information return exchange framework is designed to interoperate with equivalent regimes in other countries, and the pace of implementation is uneven across jurisdictions. Groups with significant operations in mainland China, for instance, should monitor how Singapore's exchange framework aligns with Chinese domestic implementation – our China tax structuring practice can assist with that cross-border analysis.
The OECD Pillar Two tracker maintained by oecdpillars.com provides a useful comparative reference for monitoring the status of national implementation across jurisdictions; it confirmed the Singapore consultation as of the date this alert was prepared.
Procedural Considerations: Dispute Resolution
Where the application of the amended rules gives rise to disagreement with IRAS – whether on the availability of the safe harbour, the calculation of top-up tax, or the treatment of information received through the exchange framework – groups should be aware of the procedural landscape. Singapore offers established dispute resolution mechanisms, and both the Singapore International Arbitration Centre (SIAC) and the Singapore International Commercial Court (SICC) provide neutral forums for resolving commercial and, in appropriate cases, treaty-related disputes. Early engagement with specialist counsel, rather than waiting until a tax audit is under way, is generally the more effective approach to managing these risks.
To discuss your group's position in relation to the Finance (Income Taxes) Bill 2026 or any aspect of Singapore minimum tax compliance, please reach out to our Singapore tax structuring team or write to info@ferrazwhitmore.com.
Sources
- OECD Pillar Two Developments Tracker 2026, oecdpillars.com – https://oecdpillars.com/pillar-two-developments-tracker-2026/
Facts last verified: 22 September 2026.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.