UAE Top-up Tax Registration: The 30 November 2026 Deadline and What It Requires

The UAE has published the rules that tell multinational groups how and when to get onto the tax register for the global minimum tax. FTA Decision No. 12 of 2026 was issued on 16 July 2026 and published on 4 August 2026, and it applies to fiscal years starting on or after 1 January 2025. It is administrative rather than a change of policy — but it is the piece that turns eighteen months of effective tax rate modelling into a dated task on somebody's calendar.

The tax behind the paperwork

Pillar Two is the international agreement that large multinational groups should pay at least 15% tax on profits in every country where they operate. Where the tax actually paid in a country falls short, the difference is collected as a top-up tax. The UAE brought this into domestic law through Cabinet Decision No. 142 of 2024, applying to financial years beginning on or after 1 January 2025.

The UAE's version is a domestic top-up tax — the country collects the shortfall on UAE profits itself rather than letting another jurisdiction collect it. That is a deliberate choice and it has a practical upside: the money stays here, and groups deal with an authority they already know rather than a tax office abroad.

The scope test is at group level, not entity level. A group is caught if consolidated revenue reached EUR 750 million in at least two of the four fiscal years before the year being tested. Once the group crosses that line, every UAE entity inside it is potentially in scope regardless of its own size. A small UAE subsidiary of a large foreign group has the same registration obligation as a substantial one — and that is where most of the surprises will come from.

Getting on the register

Article 2 of the Decision sets two rules. The general one: an entity subject to top-up tax must apply to register within seven months of the end of the first fiscal year in which it comes into scope. The transitional one: an entity with a fiscal year ending before 30 April 2026 must apply on or before 30 November 2026.

One point deserves to be blunt. This is a separate registration. The Decision speaks throughout of a "Tax Registration application to the Authority for Top-up Tax purposes" — an entity already registered for UAE Corporate Tax is not registered for top-up tax. The two sit under different decisions and need different applications, and holding a Corporate Tax registration number offers no comfort at all here.

Coming off the register

The exit is tighter than the entry, and this is where planning earns its keep. Under Article 3, an entity has six months to apply for deregistration, counted from the earliest of the date it ceases to exist, or the end of the fiscal year in which it leaves the MNE group and is no longer in scope. Transitionally, an entity that ceased to exist before 30 June 2026 has until 31 December 2026.

The binding condition is in Article 3.3: an entity may not be deregistered unless it has settled in full all top-up tax and penalties payable and filed all Top-up Tax Returns and Pillar Two Information Returns due. Nobody walks away from the register with obligations outstanding. For groups planning a liquidation, a restructuring or the sale of a UAE holding entity, this belongs in the timetable early — the tax file has to close before the legal entity can, and returns for the final period may not even be due at the point the deal wants to complete.

Two further mechanics are worth knowing. Where deregistration is approved, the registration stays valid until the earliest of the entity's cessation, the end of the fiscal year in which it left the group, or any other date the Authority determines — so obligations do not stop on the day the application goes in, and the Authority holds a discretion over the end point. And under Article 3.5, where an entity clearly meets the deregistration requirements but has not applied, the Authority may deregister it on its own initiative using whatever information it holds.

When the group falls below the threshold

Groups do not stay above EUR 750 million forever. Article 4 handles this through notifications rather than an immediate exit, and the sequence is easy to get wrong.

1. If the group stops meeting the threshold for a tested fiscal year, the entity submits an out-of-scope notification within six months of the end of that year.
2. That notification holds good for the tested year and the following four consecutive fiscal years — five in total — so it does not need repeating annually.
3. If the group climbs back above the threshold within that window, the entity submits an in-scope notification within seven months of the end of the year in which that happens.
4. If the full five years pass with the group still below the line, the entity applies for deregistration within six months of the end of that fifth year, unless an in-scope notification is required instead.

One filer for the whole domestic group

Article 5 is the most useful practical feature of the Decision. Where a Domestic Designated Filing Entity has been appointed, it submits the registration and deregistration applications and both types of notification on behalf of all members of a Domestic Main Group, a Domestic Minority-owned Subgroup or a Reverse Hybrid Entity, or of a Domestic JV Group.

For a group with a long list of UAE entities, that is the difference between one filing and a dozen parallel ones with a dozen chances to slip. Most groups with more than a handful of UAE companies should be taking this route, and the appointment is worth confirming well before November rather than in the week before it.

What to do now

1. Confirm whether the group crossed EUR 750 million in at least two of the four fiscal years before the tested year, and fix the first in-scope fiscal year.
2. List every UAE entity inside the group — branches, holding companies, dormant entities and joint venture vehicles included, not just the trading businesses.
3. Decide whether to appoint a Domestic Designated Filing Entity, and appoint it in good time.
4. Map each entity's fiscal year end against the deadlines above, and separate that from the later deadlines for the first Top-up Tax Return and Pillar Two Information Return.
5. Where any UAE entity is due to be wound up or sold, pull the Article 3.3 settlement conditions into the transaction timetable now rather than at completion.

Late registration attracts administrative penalties under the Tax Procedures Law; the Decision itself sets timelines rather than penalties. The deadline is a fixed date, not a rolling one, and a large number of groups are converging on the same November filing date. The practical risk here is not the technical difficulty of the application — it is leaving it until everyone else does.