UAE Corporate Tax for Large Multinationals: The Domestic Minimum Top-up Tax

The UAE Domestic Minimum Top-up Tax (DMTT) is no longer a proposal, it’s confirmed legislation, in effect since 1 January 2025 under Cabinet Decision No. 142 of 2024, with updated Ministry of Finance guidance issued in November 2025. Large multinational groups operating in the UAE now face a defined, mandatory 15% minimum effective tax rate on their UAE profits, on top of the standard Corporate Tax framework, not a possible future rate under discussion.

This guide covers what the DMTT is, which groups it applies to, how it interacts with UAE Corporate Tax and free zone incentives, filing obligations, and a worked example of how the top-up calculation actually works.

What Is the UAE Domestic Minimum Top-up Tax

The DMTT is the UAE’s local implementation of the OECD/G20 Pillar Two global minimum tax framework, confirmed under Cabinet Decision No. 142 of 2024 on the Imposition of Top-Up Tax on Multinational Enterprises. It doesn’t replace the UAE’s existing Corporate Tax system, it adds an additional layer on top of it. Where an in-scope multinational’s effective tax rate (ETR) on its UAE profits falls below 15%, the DMTT imposes a top-up tax to bring that rate up to 15%.

Who the DMTT Applies To

The DMTT applies to Constituent Entities of Multinational Enterprise (MNE) groups with consolidated global revenues of EUR 750 million (approximately AED 3.15 billion) or more in at least two of the four financial years immediately preceding the relevant fiscal year. This applies to both UAE-headquartered groups with sufficient foreign operations and foreign-headquartered groups with UAE operations, it doesn’t apply to UAE-headquartered groups with no operations outside the UAE.

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How DMTT Interacts With Standard UAE Corporate Tax

UAE Corporate Tax under Federal Decree-Law No. 47 of 2022 remains at 9% above the AED 375,000 threshold. The DMTT sits alongside this, not in place of it. For an in-scope MNE whose UAE entities have an ETR below 15% after accounting for Corporate Tax and any applicable incentives, the DMTT adds a top-up charge of up to 6 percentage points, bringing the total effective rate to 15%. A group whose UAE entities already have an ETR of 15% or above owes no additional DMTT, the mechanism only activates where the effective rate falls short.

How DMTT Interacts With Free Zone Tax Incentives

This is one of the most significant practical implications of the DMTT. Qualifying Free Zone Persons benefiting from the 0% Corporate Tax rate on qualifying income can find that benefit substantially reduced where they fall within DMTT scope. A free zone entity that is part of an in-scope MNE group and has a UAE ETR below 15% owes DMTT regardless of its favorable Corporate Tax treatment, since the DMTT is calculated based on the group’s actual effective tax rate, not just the headline Corporate Tax rate applied. Large multinational groups structured around UAE free zone entities specifically for the 0% rate need to reassess whether that structure still delivers the intended tax outcome once DMTT is factored in.

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Worked Example: Calculating the Top-up Tax

An in-scope MNE group’s UAE Constituent Entity earns AED 100,000,000 in qualifying free zone profit, taxed at the 0% Corporate Tax rate, giving it a UAE ETR of 0%. Under DMTT, since this ETR is below the 15% minimum, a top-up tax applies to bring the effective rate up to 15%, resulting in a DMTT liability of AED 15,000,000 for that entity, calculated based on the specific GloBE income and covered taxes methodology rather than a simple flat percentage of accounting profit. A comparable entity already paying standard 9% Corporate Tax with no further adjustments would face a smaller top-up, roughly bridging the gap between its actual 9% ETR and the 15% minimum, rather than the full 15%.

Filing Obligations and Deadlines

In-scope Constituent Entities must file a Top-up Tax Return with the Federal Tax Authority within 15 months after the end of the relevant reporting fiscal year, extended to 18 months for the first transition year. MNE groups may designate a single UAE entity to file and pay on behalf of all UAE-based Constituent Entities, rather than each entity filing separately. Given the complexity of the underlying GloBE calculations, potentially requiring over 250 data points per entity, groups should begin preparing well before the filing deadline rather than treating it as a standard annual compliance task.

Why the UAE Introduced the DMTT

Implementing a domestic top-up mechanism keeps tax revenue from low-taxed UAE entities within the UAE itself, rather than having other jurisdictions collect that top-up tax under the international Income Inclusion Rule or Undertaxed Profits Rule. Without a UAE DMTT, a multinational group with a UAE entity taxed below 15% would simply see the shortfall collected by its parent’s home jurisdiction instead, the UAE gains nothing from keeping its rate low in that scenario. The DMTT ensures the UAE retains that revenue domestically while keeping large multinationals compliant with the broader Pillar Two framework regardless of where they’re headquartered.

Frequently Asked Questions (FAQs)

How Farahat & Co. Can Help

Farahat & Co. supports multinational groups with DMTT scope assessment, effective tax rate modelling, and Top-up Tax Return preparation for UAE Constituent Entities.

Contact Farahat & Co. today to discuss your DMTT and Pillar Two compliance requirements.