Singapore Budget 2026 confirmed that Singapore will proceed with the implementation of the Base Erosion and Profit Shifting (BEPS) Pillar Two framework, introducing a Domestic Top-up tax (DTT) that will raise the effective tax rate for large multinational enterprises (MNEs) operating in Singapore to 15%.

The announcement was made during the Singapore Budget 2026 date on 12 February 2026, when Prime Minister and Finance Minister Lawrence Wong outlined how Singapore will align with global tax reforms while maintaining its attractiveness as an international business hub.

For multinational groups with operations in Singapore, the implementation of BEPS Pillar Two introduces new compliance responsibilities and planning considerations that should be addressed well before FY2027.

What BEPS Pillar Two Means for Singapore Businesses

Under the OECD BEPS 2.0 initiative, participating jurisdictions will introduce rules that ensure multinational enterprises pay a minimum level of tax regardless of where profits are booked.

The objective is to prevent profit shifting and ensure that large multinational companies contribute a fair share of tax in each jurisdiction where they operate.

Under Singapore Budget 2026, Singapore confirmed the implementation of two key components:

• Income Inclusion Rule (IIR)

• Domestic Top-up Tax (DTT)

These rules apply to multinational groups with annual global revenue of at least €750 million.

When implemented, the framework will ensure that the effective tax rate of multinational groups operating in Singapore reaches at least 15%.

If a multinational group’s effective tax rate falls below this threshold in Singapore, the Top-up tax mechanism will increase the tax payable to meet the global minimum rate.

Implementation Timeline for Singapore’s Pillar Two Framework

The BEPS Pillar Two framework is already moving into its implementation phase.

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This means multinational groups with Singapore operations should already be preparing for the compliance requirements associated with the new rules.

Although public attention has focused on measures such as Singapore Budget 2026 payout programmes, the BEPS Pillar Two framework is one of the most significant structural tax changes affecting multinational businesses.

How the 15% Global Minimum Tax Works Under Pillar Two

The BEPS Pillar Two framework introduces a mechanism to ensure that multinational groups pay a minimum level of tax globally.

The system operates through a Top-up tax that increases tax liabilities when the effective tax rate in a jurisdiction falls below 15%.

Two key rules govern this mechanism.

Income Inclusion Rule (IIR)

The Income Inclusion Rule applies at the parent company level.

If a subsidiary located in a jurisdiction pays tax below the 15% threshold, the parent entity may be required to pay additional tax to bring the effective tax rate up to the minimum level.

Undertaxed Profits Rule

The Undertaxed Profits Rule acts as a backstop when the Income Inclusion Rule does not apply.

Under this rule, other jurisdictions where the multinational group operates may impose additional taxes to collect the required Top-up amount.

Domestic Top-up Tax (DTT)

Singapore will also introduce a Domestic Top-up Tax, ensuring that any additional tax required under the global minimum tax rules is collected in Singapore rather than by another jurisdiction.

This allows Singapore to maintain tax sovereignty while aligning with international tax standards.

Why Singapore Is Implementing BEPS Pillar Two

The introduction of the Top-up tax reflects the evolving global tax landscape.

More than 135 jurisdictions have joined the OECD’s Inclusive Framework on BEPS, agreeing to implement measures that address tax avoidance and profit shifting.

Singapore’s decision to proceed with Pillar Two under Singapore Budget 2026 demonstrates its commitment to maintaining a transparent and internationally aligned tax system.

At the same time, the government is taking steps to ensure that Singapore remains competitive as a global investment destination.

Budget 2026 includes measures such as:

• Enhanced support for research and innovation

• Expansion of the Enterprise Innovation Scheme for AI expenditure

• Extension of major incentive regimes such as the Finance and Treasury Centre incentive and Global Trader Programme until 2031

These policies help maintain Singapore’s attractiveness even as global tax rules evolve.

Corporate Tax Incentives Are Also Being Refreshed

Alongside the Pillar Two implementation, Singapore is reviewing its investment promotion framework.

Budget 2026 signals that the government will continue refining existing incentive schemes to ensure they remain compatible with global minimum tax rules.

Key developments include:

S$37 billion allocated to the Research, Innovation and Enterprise fund for 2026 to 2030

Extension of key incentive regimes such as the Finance and Treasury Centre incentive and Global Trader Programme until 2031

Enhancements to the Double Tax Deduction for Internationalisation, with claim caps increasing from S$150,000 to S$400,000 from YA2027

Expansion of the Enterprise Innovation Scheme to include AI expenditure

These initiatives demonstrate that while Singapore aligns with global tax reforms, it continues to support innovation and international business expansion.

Learn more about AI Tax Deduction Under the Enterprise Innovation Scheme

Implications for Multinational Groups in Singapore

For multinational groups operating in Singapore, BEPS Pillar Two introduces new tax compliance obligations.

Companies should begin preparing several operational and reporting changes.

Strengthening Tax Data Systems

Pillar Two calculations require detailed financial and tax data across multiple jurisdictions.

Companies may need to upgrade internal reporting systems to ensure accurate calculations of effective tax rates.

Improving Documentation and Governance

Tax reporting under the BEPS framework requires consistent and well documented financial information.

Groups should review internal governance frameworks to ensure compliance with new reporting standards.

Reviewing Existing Incentive Structures

Some tax incentives may interact differently with the global minimum tax rules.

Companies should review their incentive structures and assess potential impacts on effective tax rates.

Evaluating Investment Decisions

Changes to global tax rules may influence decisions about where multinational groups locate operations, intellectual property, or financing structures.

Early planning and scenario analysis can help companies adapt to these changes.

Prepare Early for Pillar Two Compliance With ATHR

The implementation of the BEPS Pillar Two framework represents a major shift in the global tax environment.

For multinational groups with Singapore operations, preparing early for the new requirements is essential to ensure compliance and minimize disruption.

At ATHR, we support businesses with:

• Corporate tax advisory and compliance

• Cross border tax planning and reporting preparation

• Accounting and financial reporting alignment

• Regulatory compliance for Singapore subsidiaries

Our team works closely with companies to ensure their tax structures, financial systems, and documentation processes remain compliant with Singapore regulations and international tax standards.

If your company operates in Singapore and may be affected by the Singapore Budget 2026 Pillar Two framework, our specialists can help you assess the impact and prepare a practical compliance strategy.

Book a call with ATHR today to structure your Singapore tax planning correctly and avoid preventable compliance stress.

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