BEPS Pillar Two and 15% Multinational Top-up Tax rules apply in Singapore from financial years beginning on or after 1 January 2025, but only to a narrow band of very large groups. This decision tree tells you quickly whether your group is in scope, and what to do next if it is.
What BEPS Pillar Two actually requires
The Multinational Enterprise (Minimum Tax) Act 2024 (Act 36 of 2024) implements the Global Anti-Base Erosion Model Rules, commonly called BEPS Pillar Two, in Singapore. It introduces two related taxes: the Multinational Enterprise Top-up Tax (MTT), which functions as Singapore’s Income Inclusion Rule and taxes the low-taxed foreign profits of in-scope groups, and the Domestic Top-up Tax (DTT), which ensures that in-scope groups pay an effective tax rate of at least 15 percent on their Singapore profits, even where incentives would otherwise bring the rate lower. Both apply for financial years beginning on or after 1 January 2025.
Raffles Corporate Services works with a panel of corporate and employment law firms; this article is general information, not legal advice.
Decision tree: is your group in scope?
- Is your group’s annual consolidated revenue at least EUR750 million in at least two of the four immediately preceding financial years? If no, Pillar Two does not apply to you at all, regardless of your Singapore entity’s individual size.
- If yes, does your group have a constituent entity operating in Singapore? If yes, the Domestic Top-up Tax can apply to that Singapore entity even if its own effective tax rate looks acceptable on paper, once group-wide adjustments are applied.
- Does your group have low-taxed constituent entities located outside Singapore, with a Singapore parent or intermediate holding entity in the ownership chain? If yes, the Multinational Enterprise Top-up Tax, Singapore’s Income Inclusion Rule, may require your Singapore entity to pay top-up tax on those foreign profits.
- Has your group already registered for MTT and DTT with IRAS? In-scope groups must submit the GloBE registration form within six months after the end of the first financial year to which the Act applies; if this deadline has passed without registration, treat this as urgent.
- Are you relying on a Singapore tax incentive, such as a Pioneer or Development and Expansion incentive, to keep your effective rate below 15 percent? If yes, the Domestic Top-up Tax is specifically designed to claw back that benefit for in-scope groups, and the incentive’s headline rate is no longer the last word on your actual tax cost.
Numbers and dates that matter
- Revenue threshold: EUR750 million or more in at least 2 of the 4 preceding financial years.
- Minimum effective tax rate targeted: 15 percent, jurisdiction by jurisdiction under the GloBE Model Rules.
- Effective date: financial years beginning on or after 1 January 2025.
- Registration deadline: within 6 months after the end of the group’s first in-scope financial year.
- Governing legislation: Multinational Enterprise (Minimum Tax) Act 2024 (Act 36 of 2024), with implementing Multinational Enterprise (Minimum Tax) Regulations 2024 in force from 1 January 2025.
Filing beyond the tax return
In-scope groups also have a GloBE Information Return filing obligation, separate from the standard Form C-S or Form C corporate tax return. This return is far more granular than a typical tax computation, requiring jurisdiction-by-jurisdiction data that most finance teams have never had to assemble before, and groups should start building that data pipeline well before their first filing deadline rather than during it.
Why most SMEs can stop reading here, but should still check their group
The vast majority of Singapore private companies, including most owner-managed SMEs, fall well below the EUR750 million consolidated group revenue threshold and are entirely unaffected by MTT and DTT. The practical risk is for Singapore subsidiaries of large foreign multinational groups, or Singapore holding companies sitting above operating subsidiaries elsewhere, where the Singapore entity itself may be small but the group as a whole is squarely in scope. If your Singapore company is part of a larger international structure, confirm the group’s consolidated revenue position with your parent company’s finance function before concluding Pillar Two does not apply.
Our sister site has a focused explainer on Domestic Top-Up Tax Pillar Two registration and what it means for a Singapore subsidiary’s company secretary, which is a useful checklist if your role is administrative rather than tax-technical. For the fuller technical picture, including documents and eligibility detail we have already published, see our companion BEPS Pillar Two and 15% Multinational Top-up Tax frequently asked questions guide.
Groups navigating Pillar Two often also need to manage internationally mobile executives whose remuneration structures interact with the same effective-tax-rate concerns; our employment affiliate’s tax equalisation guide for employers is a helpful adjacent read for the people side of a multinational restructuring.
How the effective tax rate calculation actually works
The GloBE Model Rules that underpin BEPS Pillar Two do not simply look at a company’s statutory tax rate; they calculate a jurisdictional effective tax rate by dividing the group’s adjusted covered taxes in a jurisdiction by its net GloBE income in that same jurisdiction, aggregated across every constituent entity the group operates there. This aggregation matters because a group with several Singapore entities, some paying tax at the full rate and others benefiting from an incentive, is assessed on its blended Singapore-wide effective rate, not entity by entity. A group whose blended Singapore effective rate already sits at or above 15 percent, even though one entity individually enjoys a lower incentive rate, may find its Domestic Top-up Tax exposure is smaller than a first look at the incentivised entity alone would suggest. Getting this calculation right requires genuinely granular data, which is precisely why the compliance burden of Pillar Two falls more heavily on finance and tax teams than on company secretaries.
Safe harbours worth checking first
Before a group invests heavily in full GloBE effective tax rate calculations, it is worth checking whether a transitional safe harbour applies, based on simplified data drawn from the group’s country-by-country report. Where a jurisdiction’s revenue and profit before tax fall below prescribed de minimis thresholds, or where a simplified effective tax rate test is met, a group may be able to treat its top-up tax for that jurisdiction as nil for the transitional period without performing the full calculation. Groups already preparing country-by-country reports for other purposes should check this safe harbour analysis early, since it can materially reduce the immediate compliance burden even for groups that remain in scope of the regime overall.
Coordinating with your group’s other jurisdictions
Because Pillar Two is a globally coordinated regime, a Singapore entity’s top-up tax position cannot be assessed in isolation from how other jurisdictions in the group have implemented, or not yet implemented, their own Income Inclusion Rule, Undertaxed Profits Rule and Domestic Minimum Top-up Tax equivalents. A Singapore subsidiary of a group whose ultimate parent jurisdiction has already implemented a qualified Income Inclusion Rule may find that top-up tax on Singapore’s low-taxed profits is collected at the parent level rather than in Singapore, while a Singapore intermediate holding company sitting above other low-taxed subsidiaries may itself need to apply Singapore’s own Income Inclusion Rule. This is one of the more genuinely complex areas of the regime, and is best worked through with your group’s international tax function rather than assessed by the Singapore entity alone.
What Singapore company secretaries should still track
Even where the substantive tax analysis sits with a group’s international tax advisers, the Singapore company secretary of an in-scope entity has a real role to play. Board minutes and directors’ resolutions relating to GloBE registration decisions should be properly recorded in the company’s statutory registers, any change to the entity’s tax residency or incentive status flowing from a Pillar Two restructuring needs to be reflected in the company’s own records, and the six-month registration deadline is exactly the kind of statutory clock that a well-run corporate secretarial function is best placed to monitor alongside the group’s other filing deadlines.
Common mistakes to avoid
- Testing only the Singapore entity’s own revenue against the EUR750 million threshold, when the test applies at the ultimate parent’s consolidated group level.
- Missing the six-month GloBE registration deadline because it was assumed to align with the normal ECI or Form C-S filing calendar; it does not.
- Assuming an existing Singapore tax incentive still delivers its full headline benefit once the Domestic Top-up Tax is applied.
- Leaving GloBE Information Return data collection until the filing deadline, rather than building the jurisdiction-by-jurisdiction data set in advance.
FAQs
Does BEPS Pillar Two apply to a standalone Singapore SME with no foreign parent?
No, unless that SME’s own group meets the EUR750 million consolidated revenue threshold in at least two of the preceding four financial years, which is well beyond the scale of a typical SME.
What is the difference between the Multinational Enterprise Top-up Tax and the Domestic Top-up Tax?
The Multinational Enterprise Top-up Tax is Singapore’s Income Inclusion Rule, targeting low-taxed profits of the group’s entities located outside Singapore. The Domestic Top-up Tax targets low-taxed profits of the group’s own entities located inside Singapore, to keep the effective rate here at or above 15 percent.
Do Pillar Two rules override existing Singapore tax incentives?
They do not repeal existing incentives, but for in-scope groups the Domestic Top-up Tax can neutralise the benefit of an incentive that brings the effective rate below 15 percent.
When did these rules take effect?
For financial years beginning on or after 1 January 2025, under the Multinational Enterprise (Minimum Tax) Act 2024 and its regulations.
Where do I register for MTT and DTT?
Registration is submitted to IRAS, which administers both taxes and has published a dedicated e-Tax guide and registration portal for in-scope groups.
Related guides
For a broader walkthrough of the regime, see our BEPS Pillar Two and 15% Multinational Top-up Tax FAQ.
Confirming whether your group’s Singapore entity is genuinely in scope of BEPS Pillar Two, and what to register and file if it is, is a decision worth getting right the first time. Raffles Corporate Services can help you and your group’s tax advisers work through this decision tree.
Need help with this? Call, SMS or WhatsApp +65 8501 7133, or email [email protected]. Raffles Corporate Services works with a panel of corporate and employment law firms; this article is general information, not legal advice.
The Editorial Team, Raffles Corporate Services