UAE DMTT: 15% Domestic Minimum Top-up Tax for MNEs

What is the UAE Domestic Minimum Top-up Tax?

The UAE Domestic Minimum Top-up Tax (DMTT) (under Cabinet Decision No. 142 of 2024) is a separate tax regime introduced for large multinational enterprises operating in the UAE.

The DMTT applies to financial years (effective date) on or after 1 January 2025 and is intended to ensure that large multinational groups are subject to a minimum effective tax rate of 15% under the OECD Pillar Two rules.

Who does the DMTT apply to?

Multinational enterprise (MNE) groups with consolidated revenues of €750 million or more in at least two of the last four fiscal years must submit a Top-up Tax Return to the Federal Tax Authority (FTA) within 15 months after the end of the relevant tax period, or 18 months for the initial transition year.

DMTT rules apply to constituent entities of the MNE group located in the UAE, meaning the company must be operating in more than one jurisdiction.

Why the UAE introduced a Domestic Minimum Tax

The DMTT does not seek to replace the existing UAE’s tax framework under Federal Decree-Law No. 47 of 2022.

Rather, it is a complementary measure that helps the UAE follow the changing global tax landscape while sticking to its broader corporate tax framework.

As a result, most UAE businesses remain subject to the existing UAE Corporate Tax regime, including the standard 9% CT rate where applicable.

A multinational group may therefore pay their tax liabilities under corporate tax, and additional domestic top-up tax if required under Pillar Two.

Income Inclusion Rule (IIR) vs UAE DMTT Rules

The DMTT allows the UAE to collect locally any required top-up tax itself rather than leaving that tax revenue to a separate foreign jurisdiction through mechanisms such as the Income Inclusion Rule (IIR). IIR generally allows the parent company’s jurisdiction to collect top-up tax. In other words, if a jurisdiction does not collect sufficient tax locally, another jurisdiction may have the right to collect the difference.

Both the IIR and DMTT operate as part of the OECD Pillar Two framework.

Effective Tax Rate (ETR) and how DMTT Works

To define the DMTT, let’s differentiate what an effective tax rate is versus a statutory tax rate.

1. The statutory tax rate is the legal percentage established by the law. This represents the “on-paper” tax.
2. Effective tax rate is defined as the actual average percentage of income paid in taxes after accounting for deductions, exemptions, and credits. The effective rate reflects the reality of taxes owed.

The DMTT is based on the concept of effective tax rate, and the OECD Pillar Two framework generally requires ETR calculation on a jurisdiction-by-jurisdiction basis.

• If a group’s effective tax rate in UAE is below 15%, a top-up amount may become payable.
• If the UAE ETR is already 15% or higher, no DMTT is generally due.

Impact on Free Zone Entities and Qualifying Free Zone Persons (QFZPs)

The introduction of the DMTT does not abolish the UAE’s existing tax incentives under corporate tax regime. However, UAE constituent entities that benefit from free zone advantages may need to assess whether these incentives reduce their effective tax rate below the 15% threshold.

Certain UAE entities, including investment entities and sovereign wealth funds, may be exempt from the DMTT. A group could remain compliant with UAE QFZP regulations and trigger a DMTT liability under OECD rules.

UAE Federal Tax Authority Compliance Requirements

Under the DMTT framework, in-scope Constituent Entities (CEs) and Joint Ventures (JVs) must submit a Top-up Tax Return to the Federal Tax Authority (FTA) within 15 months after the end of the relevant tax period, or 18 months for the initial transition year.

The UAE FTA has the power to conduct audits, make adjustments, and impose penalties for noncompliance with the DMTT as outlined in Cabinet Decision No. 142 of 2024.

These calculations are generally performed using the OECD Global Anti-Base Erosion (GloBE) framework adopted by the UAE. Ministerial Decision No. 88 of 2025 includes OECD Commentary and Administrative Guidance for interpreting the DMTT rules.

Steps for DMTT Registration

1. Check whether the group falls within scope of the Pillar Two regulations.
   • Assess whether there is any international activity that places them within the scope of the OECD Pillar Two
   • The analysis is based on information in the group’s consolidated financial statements prepared under IFRS
2. Identify the relevant group entities.
   • MNE Groups should identify all UAE Constituent Entities (CEs) and Joint Ventures (JVs) that may be subject to the DMTT.
   • Groups should also determine the role of the Ultimate Parent Entity (UPE) and its relationship to the UAE operations for reporting purposes.
3. Review financial reporting data.
   • DMTT calculations are based on financial accounting information rather than traditional tax accounting records.
4. Register for the DMTT with the FTA.
   • Groups need to refer to the guidelines by the UAE to see whether registration or filing obligations apply, including where a Safe Harbour provision may be available.
5. Prepare for ongoing compliance.
   • Establish processes to collect and organize information
   • Large corporations need additional coordination among departments to meet global standards.

What information do you need when calculating DMTT?

• Consolidated financial statements set to International financial reporting standards
• Covered taxes
• Effective Tax Rate (ETR)
• Net book value of tangible assets
• Substance-based Income Exclusion data
• Qualifying refundable tax credit information
• Information relevant to the Income Inclusion Rule (IIR) and Undertaxed Profits Rule (UTPR)

Early preparation helps for future reporting obligations with UAE authorities

The DMTT will have limited impact on the majority of UAE businesses, including startups and free zone enterprises that are not affiliated with big international corporations.

However, for businesses falling within the scope of OECD Pillar Two, data readiness becomes critical for ongoing compliance. Key stakeholders across units must work together to adopt global tax standards.