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QDMTT (Pillar Two Minimum Tax) Singapore

Singapore’s 15% minimum tax top-up for large multinational groups

Last updated: September 2026

The Qualified Domestic Minimum Top-up Tax, or QDMTT, is a Singapore tax, effective from 2025, that tops up the local tax paid by large multinational enterprise groups to an effective rate of 15% on their Singapore profits, so any shortfall is collected by Singapore itself rather than by another country under the OECD’s global minimum tax rules.

Not financial advice. All figures for educational reference only. Data as at September 2026.

Key Takeaways

• QDMTT applies to multinational enterprise (MNE) groups with global annual revenue of at least €750 million, under the OECD/G20 BEPS 2.0 Pillar Two framework.
• It tops up a Singapore entity’s effective tax rate to 15% whenever tax incentives, such as the Pioneer Certificate or Development and Expansion Incentive, push it below that floor.
• Singapore introduced QDMTT for financial years starting on or after 1 January 2025, alongside an Income Inclusion Rule for Singapore-headquartered MNE groups.
• Without a QDMTT, the tax revenue effectively given up by Singapore’s incentives could be collected by another country under Pillar Two’s back-stop rules; QDMTT keeps that revenue onshore instead.
• QDMTT does not affect smaller companies or purely domestic Singapore businesses; it is targeted specifically at large in-scope MNE groups.

Table of Contents

What Is QDMTT?

QDMTT is Singapore’s response to the OECD/G20 Inclusive Framework’s BEPS 2.0 Pillar Two agreement, reached in 2021 among over 140 jurisdictions, which aims for a global 15% minimum effective tax rate on large multinational enterprises in order to curb profit-shifting into low-tax jurisdictions.

The underlying logic is a ‘top-up tax’ mechanism: if an MNE’s profits in a particular jurisdiction are taxed below an effective 15%, other jurisdictions in the group’s structure are entitled to claim that shortfall through mechanisms like the Income Inclusion Rule. A Qualified Domestic Minimum Top-up Tax lets the low-tax jurisdiction itself collect that top-up first, rather than ceding the revenue elsewhere.

This matters for Singapore because the country has long relied on targeted tax incentives, including Section 13O and 13U fund schemes, the Pioneer Certificate, and the Development and Expansion Incentive, that can push some large MNEs’ effective Singapore tax rate below 15%. QDMTT is Singapore’s way of protecting its own revenue base while adapting to the new global rules, rather than simply watching that revenue flow to another country’s tax authority.

For groups navigating this transition, the practical starting point is usually a Pillar Two impact assessment — mapping which Singapore entities benefit from incentives that could trigger a QDMTT top-up, then modelling the resulting effective tax rate under the OECD’s GloBE rules well before the relevant financial year begins, since the computation itself is complex enough that leaving it until the filing deadline is rarely workable.

How Does It Work in Singapore?

QDMTT applies to Singapore constituent entities that are part of an MNE group with consolidated group revenue of at least €750 million in at least two of the preceding four financial years, the standard Pillar Two revenue threshold used globally.

For an in-scope group, IRAS and the Ministry of Finance compute the group’s effective tax rate in Singapore using a Pillar Two-specific formula, essentially adjusted covered taxes divided by GloBE income. If that effective rate falls below 15%, QDMTT collects the shortfall directly from the relevant Singapore entities.

This creates real interaction with existing incentives. Companies enjoying benefits like a 13O or 13U fund tax exemption, or Pioneer or Development and Expansion Incentive status, may see the effective value of those incentives reduced for large in-scope MNE parents. In response, Singapore’s Ministry of Finance and Economic Development Board have been exploring alternative incentive designs, such as Refundable Investment Credits, intended to remain effective even under Pillar Two’s minimum tax framework.

QDMTT Example

A global manufacturing group with consolidated annual revenue of €2 billion operates a Singapore subsidiary that enjoys a Development and Expansion Incentive, bringing its effective Singapore tax rate down to 8%. Before QDMTT existed, another jurisdiction in the group’s corporate structure could have collected the 7-percentage-point shortfall, the gap between 15% and 8%, under the Income Inclusion Rule. With QDMTT in force from 2025 onward, Singapore itself collects that top-up directly from the Singapore subsidiary, keeping the revenue onshore instead of letting it flow to the parent company’s home jurisdiction.

Advantages of QDMTT

• Keeps top-up tax revenue that would otherwise be collected by another country onshore in Singapore, protecting the country’s fiscal base as global tax rules shift.
• Gives large MNEs greater certainty, since the top-up is calculated and collected locally by a single authority rather than retroactively adjusted by a foreign tax authority.
• Aligns Singapore with the more than 140 jurisdictions implementing the same OECD framework, reducing the risk of double taxation disputes between countries.
• Signals policy stability to investors, since Singapore is adapting its incentive toolkit, for example through Refundable Investment Credits, rather than abandoning its pro-investment stance altogether.

Risks and Limitations

• Reduces the effective value of legacy tax incentives for in-scope MNEs, which could affect Singapore’s relative attractiveness for the very largest multinational investment decisions.
• Adds significant compliance complexity, since affected MNE groups must run parallel GloBE (Pillar Two) computations alongside their normal Singapore tax filings.
• The €750 million threshold and the definition of an in-scope MNE group continue to be refined at the OECD level, creating some near-term uncertainty for affected groups as the framework matures.
• Smaller companies and family offices sometimes mistakenly assume QDMTT could affect their own structures, such as 13O or 13U funds, when in practice it is narrowly targeted at very large MNE groups meeting the revenue threshold.
• Because the underlying OECD Pillar Two rules are still being refined and clarified by different jurisdictions at different paces, an MNE group’s QDMTT position calculated today can shift as further administrative guidance is issued, adding an ongoing compliance burden beyond a single one-off assessment.

QDMTT vs Income Inclusion Rule (IIR) vs Undertaxed Profits Rule (UTPR)

Pillar Two’s minimum tax is enforced through three layered mechanisms, applied in a specific order, and QDMTT is designed to act first.

Source: OECD Pillar Two Model Rules and Singapore Ministry of Finance Budget statements, 2026.

The Bottom Line

QDMTT is Singapore’s way of staying ahead of the global minimum tax rules rather than being caught by them. Instead of letting another country collect the 15% top-up from a Singapore-based multinational, Singapore collects it first, while rolling out newer incentive tools designed to remain effective under Pillar Two.

Frequently Asked Questions

Related Terms

• Section 13O and 13U Family Office Tax Incentive Singapore
• Singapore Income Tax Rates 2026
• Group Relief (Tax) Singapore
• Capital Allowances Singapore

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