UAE Domestic Minimum Top-Up Tax (DMTT): Audit and Compliance Implications for Multinationals

What Is the UAE Domestic Minimum Top-Up Tax?

The UAE Domestic Minimum Top-Up Tax, commonly referred to as DMTT, is a domestic minimum tax introduced as part of the UAE’s implementation of the OECD/G20 Two-Pillar Solution. It is intended to ensure that qualifying multinational enterprise groups are subject to a minimum effective tax rate of 15% on their relevant income in the UAE.

The UAE DMTT is closely aligned with the OECD’s Global Anti-Base Erosion Rules, commonly known as the GloBE Rules. These rules establish a framework for calculating the effective tax rate of large multinational groups in each jurisdiction where they operate.

The UAE DMTT applies to financial years beginning on or after 1 January 2025. It is therefore relevant to multinational groups that have UAE entities and meet the applicable global revenue threshold.

The introduction of DMTT does not mean that every UAE company must pay tax at 15%. The rules target qualifying multinational enterprise groups, and several exclusions, elections, safe harbours, and adjustments may affect whether a top-up tax liability arises.

Which Multinational Groups Are Subject to UAE DMTT?

The UAE DMTT generally applies to constituent entities of multinational enterprise groups that meet the global revenue threshold under the Pillar Two framework.

A multinational enterprise group is generally a group that includes entities or permanent establishments located in more than one jurisdiction. The group may be headquartered in the UAE or in another country.

The relevant threshold is:

• Consolidated annual revenue of at least EUR 750 million.
• The threshold must be met in at least two of the four financial years immediately preceding the financial year being tested.

The threshold is assessed by reference to the consolidated financial statements of the group’s Ultimate Parent Entity, subject to the applicable GloBE rules and definitions.

For example, if a multinational group has consolidated revenue of EUR 800 million in two of the four preceding financial years, it may fall within the scope of the UAE DMTT if it has a relevant constituent entity operating in the UAE.

A company should not determine its DMTT status solely by looking at its own revenue. A UAE subsidiary with relatively modest turnover may still fall within the framework if it belongs to a qualifying multinational group.

Does UAE DMTT Apply to Free Zone Companies?

Potentially, yes. A free zone company may be within the scope of the UAE DMTT if it is a constituent entity of a qualifying multinational enterprise group.

UAE Corporate Tax incentives and free zone tax treatment do not automatically remove a qualifying multinational group from the Pillar Two framework. A group must assess its position under the DMTT rules, including the treatment of qualifying income, covered taxes, substance-based exclusions, and other applicable adjustments.

This is particularly relevant to international groups with UAE subsidiaries, holding companies, distribution companies, or operating entities located in free zones.

However, being located in a UAE free zone does not, by itself, mean that a company is subject to DMTT. The multinational group threshold and the applicable scope provisions must first be considered.

How Does the UAE 15% Minimum Tax Work?

The UAE DMTT is designed to bring the effective tax rate of an in-scope multinational group’s UAE operations up to the 15% minimum, where the relevant GloBE calculation produces an effective tax rate below 15%.

The calculation is not simply a matter of taking the company’s accounting profit and multiplying it by 15%. The GloBE framework requires a jurisdictional calculation based on adjusted financial information, covered taxes, and applicable exclusions.

At a simplified level, the calculation involves the following stages:

1. Identify the UAE constituent entities and determine whether the multinational group is within the scope of the DMTT.
2. Determine the relevant GloBE income or loss for the UAE jurisdiction.
3. Calculate adjusted covered taxes attributable to the relevant income.
4. Determine the UAE jurisdictional effective tax rate.
5. Apply any relevant safe harbours, exclusions, and substance-based income exclusion.
6. Calculate any top-up tax arising under the applicable DMTT rules.

The actual calculation can involve complex accounting and tax adjustments. The simplified steps above are intended to explain the general mechanism and do not replace the detailed provisions of the UAE DMTT legislation.

Understanding the Jurisdictional Effective Tax Rate

Under the GloBE framework, the effective tax rate is generally determined at the jurisdictional level rather than by applying a single percentage to the accounting profit of each individual company.

The calculation broadly compares adjusted covered taxes with GloBE income for the relevant UAE jurisdiction.

A simplified representation is:

Jurisdictional effective tax rate = Adjusted covered taxes ÷ GloBE income

This formula is only a high-level illustration. The actual rules contain detailed provisions governing the determination of GloBE income, covered taxes, deferred tax adjustments, intra-group transactions, losses, and other relevant items.

Consequently, the UAE’s ordinary Corporate Tax rate, a company’s accounting tax expense, and its GloBE effective tax rate are not necessarily identical.

How Is the DMTT Top-Up Amount Calculated?

Where the relevant UAE jurisdictional effective tax rate is below 15%, a top-up tax may arise under the DMTT rules.

The calculation generally considers the difference between the 15% minimum rate and the jurisdictional effective tax rate, together with the relevant excess profit and other applicable adjustments.

In simplified terms:

Top-up tax rate = 15% − Jurisdictional effective tax rate

The top-up tax amount is then determined using the applicable GloBE calculation methodology. It is not necessarily equal to the top-up rate multiplied by the company’s entire accounting profit.

The framework includes a Substance-Based Income Exclusion, which generally reduces the income subject to the top-up calculation by reference to eligible payroll costs and the carrying value of eligible tangible assets.

This mechanism recognises that businesses with genuine economic activity may have an amount of income excluded from the top-up tax base under the applicable rules.

Illustrative Example of a DMTT Calculation

Consider a hypothetical multinational group with a UAE jurisdictional GloBE income of AED 100 million and adjusted covered taxes of AED 9 million.

For illustration only, assume that the relevant calculation produces an effective tax rate of 9% and that no other adjustments, exclusions, or safe harbours apply.

• GloBE income: AED 100 million.
• Adjusted covered taxes: AED 9 million.
• Illustrative effective tax rate: 9%.
• Difference from the 15% minimum: 6 percentage points.

Before considering the substance-based income exclusion and other applicable rules, the illustrative top-up rate would be 6%.

Applying that rate to AED 100 million would produce a purely hypothetical amount of AED 6 million. However, this is not a final DMTT liability. The actual calculation must consider the substance-based income exclusion, GloBE adjustments, safe harbours, and other provisions that may change the amount.

The example demonstrates why a DMTT calculation requires more than reviewing a company’s headline Corporate Tax rate.

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What Is the Substance-Based Income Exclusion?

The Substance-Based Income Exclusion, or SBIE, is a feature of the Pillar Two framework that generally excludes a portion of income associated with substantive economic activity from the top-up tax calculation.

The exclusion is based primarily on eligible payroll costs and the carrying value of eligible tangible assets located in the relevant jurisdiction.

In broad terms, the exclusion is intended to recognise businesses that maintain real operations, employees, and tangible assets rather than relying primarily on low-tax structures without corresponding economic activity.

The amount of the exclusion is calculated under the applicable GloBE rules. The relevant percentages, definitions, transitional provisions, and qualifying costs must be reviewed in accordance with the legislation and applicable guidance for the relevant financial year.

For audit and documentation purposes, multinational groups should maintain reliable payroll records, fixed asset registers, asset valuation information, and supporting schedules for the UAE entities included in the calculation.

Does the UAE DMTT Apply to All Multinational Entities?

No. The UAE DMTT framework contains exclusions and special provisions that may affect whether a particular entity or group is subject to the tax.

Relevant provisions include certain investment entities and groups in the initial phase of international activity, subject to the applicable conditions.

The UAE’s DMTT framework also contains specific variations from the OECD GloBE Rules. Therefore, multinational groups should not assume that an exclusion under one country’s Pillar Two rules will automatically produce the same result under the UAE rules.

The scope must be assessed using the relevant UAE legislation, definitions, and applicable administrative guidance.

UAE DMTT and OECD Pillar Two

The UAE DMTT is part of the broader OECD/G20 Pillar Two framework, which seeks to establish a global minimum tax system for qualifying multinational enterprise groups.

The Pillar Two framework is designed to reduce incentives for large multinational groups to shift profits to jurisdictions where the effective tax rate is below the agreed minimum, while establishing common rules for calculating and administering the tax.

The UAE’s approach is closely aligned with the OECD’s GloBE Model Rules, Commentary, and Administrative Guidance.

The UAE has also received OECD transitional qualified status for its DMTT legislation. This status is relevant to the treatment of the UAE’s domestic minimum tax under the international Pillar Two framework and provides greater certainty concerning the interaction between the UAE rules and other jurisdictions’ minimum tax systems.

What Is the Reporting Currency Requirement for UAE DMTT?

The UAE DMTT framework includes specific currency requirements for the preparation of relevant calculations and reporting information.

For UAE DMTT purposes, the reporting currency is the UAE dirham (AED). Multinational groups should ensure that the relevant DMTT calculations and reports are prepared in accordance with the applicable UAE currency requirements.

This is particularly important for groups whose consolidated financial statements are prepared in euros, US dollars, pounds sterling, or another foreign currency.

The group’s reporting systems may need to convert relevant financial information into the required UAE reporting currency using the prescribed methodology and applicable exchange rates.

Finance teams should maintain clear documentation showing:

• The original currency of the underlying financial records.
• The exchange rates used for relevant conversions.
• The date or period to which the exchange rates relate.
• The source of the exchange rate information.
• The reconciliation between the original financial data and the converted amounts.

The precise conversion requirements should be confirmed against the applicable UAE DMTT legislation and administrative guidance for the relevant reporting period.

Why DMTT Creates New Audit and Compliance Responsibilities

The UAE DMTT introduces additional financial reporting and compliance considerations for qualifying multinational groups.

Traditional financial statement audits and DMTT calculations have different objectives. A statutory audit examines whether financial statements are prepared in accordance with the applicable financial reporting framework. A DMTT calculation, by contrast, requires specific information and adjustments under the GloBE Rules and UAE legislation.

Even when a multinational group already has a well-established external audit process, it may need additional procedures to support the data used in its Pillar Two calculations.

These procedures can include reviewing the completeness of financial data, validating accounting adjustments, reconciling tax information, checking the consistency of intercompany records, and maintaining documentation for the relevant DMTT calculations.

Key Audit and Documentation Implications of UAE DMTT

1. Financial Data Governance

DMTT calculations depend on reliable financial information from the group’s constituent entities.

Multinational groups should establish clear processes for collecting, reviewing, approving, and consolidating information from UAE entities.

Important areas include:

• Accurate trial balances.
• Consistent chart of accounts.
• Reconciliations between local and group reporting systems.
• Documented accounting adjustments.
• Clear ownership of data submissions.
• Review and approval controls.

Data governance becomes especially important when the UAE entity uses a local accounting system while the parent company uses a separate enterprise resource planning platform.

2. Reconciliation of Financial Statements to GloBE Data

The financial information used in the DMTT calculation may not correspond directly to the final figures reported in the company’s statutory financial statements.

The GloBE Rules require specific adjustments to accounting income and taxes. Finance teams should therefore maintain a reconciliation between the underlying financial statements and the figures used in the DMTT computation.

A useful reconciliation may identify:

• Accounting profit or loss.
• GloBE income adjustments.
• Covered tax adjustments.
• Deferred tax adjustments.
• Excluded income or expenses.
• Intercompany adjustments.
• Other relevant GloBE adjustments.

This documentation helps reviewers understand how the final DMTT figures were derived.

3. Review of Covered Taxes

Covered taxes are an important component of the GloBE effective tax rate calculation.

The group must determine which taxes qualify as covered taxes under the relevant rules and how those taxes should be attributed to the UAE jurisdiction.

Finance teams should maintain supporting records for relevant Corporate Tax balances, current tax expenses, deferred tax adjustments, tax payments, and other items included in the DMTT calculation.

The treatment of individual tax items can be complex, so the applicable rules should be reviewed carefully rather than assuming that every tax expense in the financial statements qualifies automatically.

4. Payroll and Tangible Asset Documentation

The substance-based income exclusion makes reliable payroll and tangible asset records particularly important.

Multinational groups should maintain appropriate evidence of:

• Eligible employees and payroll costs.
• Employee location and relevant employment arrangements.
• Eligible tangible assets.
• Asset ownership or use.
• Carrying values.
• Asset additions and disposals.
• Depreciation and other relevant accounting adjustments.

The group should also establish a process for verifying that the amounts included in the substance-based income exclusion agree with the underlying accounting records.

5. Intercompany and Related-Party Transactions

Intercompany transactions can affect the financial information used in DMTT calculations.

Transactions between UAE entities and overseas group companies may require review to ensure that the underlying accounting treatment, tax treatment, and GloBE adjustments are appropriately reflected.

Examples include:

• Management fees.
• Royalty payments.
• Intercompany financing.
• Shared service charges.
• Transfer of goods or inventory.
• Cost allocations.
• Intercompany dividends.

These transactions should be reconciled with the relevant intercompany agreements, accounting records, and transfer pricing documentation.

Transfer Pricing Adjustments and DMTT

Transfer pricing and Pillar Two calculations are related areas of multinational tax compliance, although they serve different purposes.

Transfer pricing rules generally address whether transactions between related parties are priced consistently with the arm’s length principle. The Pillar Two framework, including UAE DMTT, uses specific rules to determine GloBE income, covered taxes, and the jurisdictional effective tax rate.

A transfer pricing adjustment may therefore affect the financial and tax information used in a DMTT calculation.

For example, a UAE entity may record a management fee payable to an overseas group company. A subsequent transfer pricing review could determine that the amount requires adjustment under the applicable rules. The group may then need to assess how that adjustment affects its financial statements, tax position, and GloBE calculations.

Multinational groups should maintain coordination between their transfer pricing, tax reporting, accounting, and DMTT teams to ensure that relevant adjustments are identified and documented consistently.

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Integrated Audit Protocols for Multinational Groups

Qualifying multinational groups may benefit from integrating DMTT-related procedures into their wider financial reporting and audit governance framework.

An integrated audit protocol can help finance teams identify relevant data, assign responsibilities, and establish a consistent review process across UAE entities.

Financial Reporting Controls

Financial reporting controls should ensure that the underlying financial statements and accounting records are complete, accurate, and reconciled.

Tax Data Controls

Tax controls should address the accuracy of relevant tax balances, the classification of covered taxes, and the reconciliation of tax records with financial reporting data.

Transfer Pricing Controls

Transfer pricing controls should support the identification and documentation of related-party transactions and relevant adjustments.

DMTT Calculation Controls

DMTT controls should cover the collection of data, calculation methodology, use of applicable elections and safe harbours, review of adjustments, and approval of the final calculation.

Documentation and Review Controls

Documentation controls should ensure that the group can explain the source, calculation, review, and approval of the figures used in its DMTT reporting.

What Documents Should Multinationals Prepare for DMTT Compliance?

The exact documentation requirements depend on the group’s structure and the applicable reporting obligations. However, a practical DMTT documentation file may include:

• Ultimate Parent Entity consolidated financial statements.
• Group structure chart.
• List of UAE constituent entities.
• Local statutory financial statements.
• Trial balances and general ledgers.
• Reconciliation between local and group reporting systems.
• GloBE income or loss calculations.
• Adjusted covered tax schedules.
• Deferred tax calculations and supporting information.
• Payroll records relevant to the substance-based income exclusion.
• Fixed asset registers.
• Intercompany transaction schedules.
• Transfer pricing documentation.
• Tax returns and tax payment records.
• Applicable safe harbour calculations.
• Exchange rate documentation.
• DMTT calculation workpapers.
• Internal review and approval records.
• Relevant correspondence with tax authorities.

Maintaining a centralised documentation file can make it easier to respond to internal review requests, external audit procedures, and applicable tax authority enquiries.

DMTT Compliance Readiness Checklist

Multinational groups with UAE operations can use the following checklist to assess their readiness for DMTT-related reporting and audit work.

• Confirm whether the group meets the EUR 750 million consolidated revenue threshold.
• Review the group’s revenue for at least two of the four preceding financial years.
• Identify the UAE constituent entities within the multinational group.
• Review the group’s UAE DMTT registration and reporting responsibilities.
• Identify the financial reporting systems used by each UAE entity.
• Confirm that local financial statements and trial balances are complete.
• Prepare reconciliations between local accounting records and group reporting data.
• Identify relevant covered taxes and supporting records.
• Review the treatment of deferred tax balances.
• Prepare payroll and tangible asset schedules for the substance-based income exclusion.
• Review intercompany transactions and relevant transfer pricing adjustments.
• Confirm the required reporting currency and conversion methodology.
• Assess available safe harbours and applicable exclusions.
• Document the DMTT calculation methodology.
• Assign responsibility for data collection, preparation, review, and approval.
• Establish a timetable for relevant DMTT reporting obligations.
• Maintain supporting documentation for the relevant financial year.

What Should Multinational Groups Do to Prepare for DMTT?

Businesses should begin their DMTT preparation well before the relevant reporting deadline.

Review Group Structure and Scope

Determine which UAE entities are part of the multinational group and whether the group meets the applicable revenue threshold.

Assess Financial Data Availability

Review whether the group can obtain the financial and tax information required for the DMTT calculation from each relevant UAE entity.

Identify Data Gaps

Identify missing information relating to payroll, tangible assets, intercompany transactions, tax balances, and financial reporting adjustments.

Establish Responsibility

Assign clear responsibility to finance, tax, accounting, transfer pricing, and group reporting teams for the relevant workstreams.

Coordinate With External Auditors

Discuss the financial reporting and documentation implications with the group’s external auditors or other qualified financial reporting specialists.

Maintain a DMTT Workpaper File

Keep a structured file containing the relevant calculations, reconciliations, source records, assumptions, review notes, and approvals.

UAE DMTT Reporting and Compliance Considerations

Qualifying multinational groups must assess their reporting and compliance obligations under the applicable UAE DMTT rules.

The UAE has introduced specific requirements concerning DMTT reporting, including obligations relating to the Pillar Two Information Return and the entities responsible for filing it.

Depending on the group’s structure, the information return may be filed directly or through a designated local entity, subject to the applicable rules and conditions.

Groups should also consider the interaction between DMTT reporting and their wider UAE Corporate Tax compliance processes.

The precise filing dates, registration requirements, reporting arrangements, and applicable administrative obligations should be confirmed using the latest guidance and decisions issued by the UAE Ministry of Finance and the Federal Tax Authority.

How DMTT May Affect UAE Financial Reporting

DMTT can create additional considerations for the financial statements of multinational groups with UAE operations.

For example, a group may need to assess whether a DMTT liability is recognised or disclosed in its financial statements under the applicable accounting standards.

International financial reporting standards have also introduced specific considerations for the accounting effects of Pillar Two taxes, including temporary relief concerning certain deferred tax accounting requirements.

Finance teams should coordinate with their financial reporting specialists to determine the appropriate accounting treatment for the relevant financial year.

It is important to distinguish between:

• The DMTT calculation under UAE tax legislation.
• The recognition and measurement of tax liabilities under the applicable accounting standards.
• The disclosures required in the group’s financial statements.

These areas are connected, but they are not identical.

How AFD Can Support DMTT-Related Audit and Documentation Work

AFD Auditors can support multinational groups with financial reporting and audit-related work connected to UAE DMTT calculations.

The scope of support can be structured around the financial information and documentation required for the relevant DMTT workstreams.

Financial Data Review

AFD can assist with reviewing relevant financial records, trial balances, reconciliations, and supporting schedules used in the DMTT calculation process.

Special-Purpose Audit Reports

Where appropriate and subject to an agreed engagement scope, AFD can support the preparation of special-purpose audit reports or other agreed financial reporting deliverables designed to provide reliable financial information for use in DMTT-related calculations.

The precise nature of any special-purpose report depends on the reporting framework, the intended users, the information required, and the agreed engagement terms.

Financial Reconciliations

AFD can assist with reconciling financial information between local accounting records and group reporting data, helping identify inconsistencies that may affect DMTT workpapers.

Documentation and Internal Controls

AFD can help businesses review the structure of their financial documentation and identify areas where additional controls or supporting records may be useful for audit and reporting purposes.

Coordination With Group Reporting Teams

For multinational groups, financial reporting work may need to be coordinated with the parent company’s finance, tax, transfer pricing, and external audit teams.

AFD can support the financial reporting workstream within an agreed scope while the group coordinates its overall DMTT compliance and tax reporting responsibilities.

Frequently Asked Questions About UAE DMTT

What is the UAE Domestic Minimum Top-Up Tax?

The UAE Domestic Minimum Top-Up Tax is a domestic minimum tax introduced under the UAE’s implementation of the OECD/G20 Pillar Two framework. It is designed to ensure that qualifying multinational enterprise groups pay a minimum effective tax rate of 15% on relevant UAE income under the applicable rules.

When did UAE DMTT become effective?

The UAE DMTT applies to financial years beginning on or after 1 January 2025.

Which companies are subject to UAE DMTT?

The rules generally apply to constituent entities of multinational enterprise groups that have consolidated annual revenue of at least EUR 750 million in at least two of the four financial years immediately preceding the relevant financial year, subject to applicable exclusions and conditions.

Does the UAE DMTT apply to companies with a 0% free zone tax rate?

A qualifying multinational group with a UAE free zone entity may fall within the DMTT framework. Free zone tax treatment does not automatically exclude a constituent entity from the Pillar Two rules. The group’s scope and the relevant UAE DMTT calculation must be assessed.

Is the UAE DMTT the same as UAE Corporate Tax?

No. UAE Corporate Tax and DMTT are separate tax frameworks. DMTT uses the Pillar Two GloBE methodology to assess the effective tax rate of qualifying multinational groups at the jurisdictional level.

Is DMTT calculated by applying 15% to accounting profit?

No. The DMTT calculation requires adjustments to accounting information under the GloBE Rules. It also considers adjusted covered taxes, the substance-based income exclusion, applicable safe harbours, and other relevant provisions.

What is the EUR 750 million threshold for DMTT?

The threshold generally refers to consolidated annual revenue of at least EUR 750 million in at least two of the four financial years immediately preceding the financial year in which the DMTT applies.

What is the reporting currency for UAE DMTT?

The UAE DMTT framework includes specific requirements concerning reporting currency and the presentation of relevant calculations. Groups should follow the applicable UAE legislation and administrative guidance regarding currency conversion and reporting.

Why are audits important for DMTT compliance?

Audits and related financial reporting procedures can help improve the reliability of the financial information used in DMTT calculations. They may also help identify inconsistencies in accounting records, tax balances, intercompany transactions, payroll records, and tangible asset schedules.

Can AFD prepare a special-purpose audit report for DMTT calculations?

AFD can discuss financial reporting and special-purpose audit engagements that may support DMTT-related calculations. The exact deliverables depend on the agreed scope, applicable reporting framework, and information requirements of the intended users.

Conclusion

The UAE Domestic Minimum Top-Up Tax is an important development in the country’s implementation of the OECD/G20 Pillar Two framework.

It applies to qualifying multinational enterprise groups with consolidated annual revenue of at least EUR 750 million in at least two of the four preceding financial years, subject to the applicable scope provisions and exclusions. The DMTT is designed to bring the relevant UAE jurisdictional effective tax rate up to a 15% minimum where a top-up tax arises under the applicable rules.

For multinational groups, the implications extend beyond tax calculations. Reliable financial records, transfer pricing documentation, payroll schedules, tangible asset registers, financial reconciliations, and well-defined internal controls can all support the DMTT reporting process.

Businesses should also recognise the distinction between statutory audits, special-purpose audit reports, and DMTT calculations. Each has a different purpose, and the appropriate scope should be established before work begins.

AFD Auditors can support multinational groups with financial reporting, audit, reconciliation, and special-purpose reporting requirements that may feed into DMTT-related calculations. Early coordination between finance teams, tax specialists, group reporting departments, and auditors can help improve the quality and consistency of the information required for Pillar Two compliance.