Does the UAE Domestic Minimum Top-up Tax apply to your free zone group?

Cabinet Decision No. 142 of 2024 sets a 15 per cent floor under the UAE tax position of large multinational groups, and the floor reaches into the free zones. The Domestic Minimum Top-up Tax does not replace corporate tax. It recalculates a group's UAE result against the 15 per cent minimum and collects the difference where the group's effective tax rate in the UAE falls below it. A Qualifying Free Zone Person taxed at zero per cent on its qualifying income is not outside that calculation, which is the point most free zone groups miss.

The tax took effect for financial years starting on or after 1 January 2025, so the first calculations are already running and the first returns fall due in 2027. It applies only to groups above a high revenue threshold, which keeps most UAE businesses out of scope entirely. For the groups that are in scope, the first questions are whether the threshold is met, how the free zone regime interacts with the floor, and when the group must register and file. A corporate lawyer in Dubai works through these in order.

How the Domestic Minimum Top-up Tax works

The Domestic Minimum Top-up Tax implements the OECD Pillar Two rules in the UAE. It sits on the enabling provisions added to the Corporate Tax Law by Federal Decree-Law No. 60 of 2023, and the Ministry of Finance gave it detailed effect through Cabinet Decision No. 142 of 2024. Ministerial Decision No. 88 of 2025 then adopted the OECD Commentary and Agreed Administrative Guidance, so where the UAE text is silent the OECD Global Anti-Base Erosion rules fill the gap.

The mechanism is a recalculation rather than a new headline rate. The group works out its effective tax rate for the UAE by dividing the adjusted covered taxes of its UAE entities by their Pillar Two income. Where that rate falls below 15 per cent, a top-up tax brings it up to the floor. The top-up applies to excess profit, which is Pillar Two income reduced by a substance-based carve-out described below.

The UAE has chosen a narrow form of Pillar Two. It has adopted the domestic top-up tax, which keeps the revenue in the UAE, but it has not adopted the Income Inclusion Rule or the Undertaxed Profits Rule. The practical effect is that the UAE collects the top-up on profits earned by UAE entities, rather than leaving another country to collect it on the same profit.

Which groups fall within scope

Scope turns on one threshold. The tax applies to a constituent entity of a multinational group with consolidated annual revenue of EUR 750 million or more. That revenue must be reached in at least two of the four financial years before the year in question. Revenue is read from the consolidated financial statements of the ultimate parent entity. A purely domestic UAE group, with no foreign presence, sits outside the rules even where its revenue is high.

That single test does most of the work. A family-owned UAE group operating only in the Emirates is not in scope. A mid-sized regional business below the revenue line is not in scope. The rules bite on the UAE entities of large international groups, and they bite regardless of whether those UAE entities are on the mainland or in a free zone.

How the 15 per cent floor interacts with the free zone regime

The free zone interaction is where the surprise sits. The Qualifying Free Zone Person regime gives a zero per cent rate on qualifying income, and groups have built structures around it. The top-up tax does not respect that zero. For an in-scope group, a UAE entity taxed at zero per cent drags down the UAE effective rate. The top-up then lifts the result toward 15 per cent on the excess profit.

The substance-based income exclusion softens the result for groups with real activity in the UAE. It removes a slice of profit from the top-up calculation, based on payroll costs and the carrying value of tangible assets in the UAE. A group with substantial people and physical assets in a free zone shields more of its profit than a group holding income in a UAE entity with little substance behind it. How the free zone rate is tested in practice is set out in our note on how the FTA reviews free zone corporate tax status, and the same substance evidence matters here.

Which entities and groups sit outside the rules

Several categories sit outside the top-up tax even inside a large group. Government entities, international organisations, non-profit organisations, pension funds, and certain investment funds are excluded. A constituent entity that qualifies as an investment entity is not subject to the UAE top-up tax. A group in the initial phase of its international activity can also fall outside scope, where no Income Inclusion Rule applies to a UAE entity in the structure.

The regime also carries safe harbours and de minimis thresholds drawn from the OECD framework, which can switch off a detailed calculation for a jurisdiction in a given year. The UAE designed its rules to keep the Qualified Domestic Minimum Top-up Tax safe harbour status. A group that pays the UAE top-up should therefore not face a second top-up on the same UAE profit in the parent's country. Confirming that a safe harbour applies is a calculation in itself, not an assumption.

Registration, returns, and the first filing deadline

In-scope groups carry compliance obligations that sit on top of ordinary corporate tax. The group must register for the top-up tax and file a UAE Top-up Tax Return through EmaraTax. In defined cases it also files a Pillar Two information return covering every jurisdiction the group operates in. The data behind these returns comes from standalone financial statements prepared under IFRS, which raises the same documentation discipline covered in our guide to transfer pricing documentation for the FTA.

The deadline runs from the end of the financial year. The standard filing date is 15 months after year end, extended to 18 months for the first year a group is in scope. A calendar-year group with a financial year ending 31 December 2025 therefore files its first return by 30 June 2027 under the transitional extension. Disclosure starts earlier than the return, because the impact of the tax has to be reflected in the group's financial statements for the 2025 year. Penalties for non-compliance follow the corporate tax regime and the unified administrative penalty rules, so a missed registration or a late return carries a fixed cost.

What multinational groups should do before the first filing cycle

The first task is to confirm the threshold, by testing consolidated group revenue against the EUR 750 million line across the relevant four-year window. A group that clears the line should then identify every UAE constituent entity, including free zone entities and dormant holding vehicles. The effective tax rate is tested across all of them together.

The modelling work follows. Run the UAE effective tax rate calculation on the group's figures, apply the substance-based income exclusion, and factor in any UAE incentives that reduce the top-up, such as the research and development tax credit. The result tells the group whether it owes a top-up and how large it is, which is the figure the finance team needs for both the financial statements and the return. Starting this work close to the filing deadline is the main avoidable risk, because the data sits across multiple entities and currencies and takes time to assemble.

How should multinational groups approach the UAE Domestic Minimum Top-up Tax in 2026?

The UAE Domestic Minimum Top-up Tax changes the answer to a question many groups thought was settled. A structure built around the zero per cent free zone rate no longer delivers a zero per cent UAE outcome once the group crosses the revenue threshold. The 15 per cent floor recomputes the result. The free zone regime still matters, but for an in-scope group it sets the starting point of the calculation rather than the final tax bill.

The most time-sensitive task belongs to large groups with a December year end. Their first return falls due on 30 June 2027, and the financial statement disclosures for the 2025 year come well before that. A group that has not yet modelled its UAE effective tax rate is working without the one number that controls both filings.

For groups testing their structure, their free zone position, and their first top-up calculation, our corporate lawyers in Dubai advise on scope, the free zone interaction, and the registration and filing obligations. Legal advice may be needed to confirm how the tax applies to a specific group and where its exposure sits.