UAE Pillar Two top-up tax regulation arrives: what multinationals must do before year-end

# The regulation and what it changes

The UAE has issued a formal regulation establishing a domestic minimum top-up tax under the OECD's Pillar Two framework, targeting multinational enterprises with consolidated annual revenues above EUR 750 million. Reporting from The National and Gulf News confirms the regulation formalises how the UAE will collect a top-up tax where a multinational's effective tax rate in any jurisdiction falls below the 15% global minimum.

This matters because under current rules the UAE's headline corporate tax rate sits at 9%, well below the Pillar Two floor. For in-scope groups, the domestic top-up mechanism closes the gap, collecting the difference before another jurisdiction does. The practical effect: affected entities can no longer assume that operating in the UAE, or in a free zone with qualifying income treatment, provides shelter from a minimum 15% effective rate on their UAE-source profits.

Khaleej Times reports that the new rules also introduce specific tax filing requirements for in-scope multinational firms, adding a layer of reporting obligations on top of those already required under existing UAE corporate tax law.

# Who is actually caught, and the free zone question

The EUR 750 million revenue threshold means the regulation touches a narrower population than the UAE's standard corporate tax, which under current rules applies to most businesses with taxable income above AED 375,000. Groups below that threshold are unaffected.

The complexity falls hardest on groups that structured UAE operations around free zone qualified income, expecting a 0% rate on eligible activities. Tfipost.com notes that the 2026 corporate tax rules alter the calculus for free zone companies within in-scope multinational groups. A 0% effective rate at the entity level does not disappear, but the parent group may still face a top-up charge at the jurisdiction level, eroding the cash advantage that drew many treasury and holding structures to UAE free zones in the first place.

Groups need to model their effective tax rate at the UAE jurisdictional level across all constituent entities, not just entity by entity. That is a non-trivial exercise for groups with mixed onshore, free zone and offshore presences within the country.

# The VAT due diligence layer arriving simultaneously

Separately, EY reports that the UAE has also issued a decision introducing due diligence requirements for input VAT recovery. This is a distinct measure from the Pillar Two regulation, but the timing is deliberate. Businesses that recover input VAT must now satisfy formal due diligence conditions, raising the evidentiary bar on supplier verification and record-keeping. For large multinationals already absorbing a new top-up tax filing burden, the VAT change adds a parallel compliance workstream that cannot be deferred.

# What to do about it

First, determine whether any UAE entity sits within an in-scope multinational group. If consolidated group revenue is below EUR 750 million, Pillar Two does not apply, though the VAT due diligence rules affect all VAT-registered businesses regardless of size.

For in-scope groups, commission a Pillar Two impact assessment now. The key output is a jurisdiction-level effective tax rate calculation for the UAE, aggregating all constituent entities. That figure determines whether a top-up charge arises and, if so, its approximate quantum.

Free zone entities within in-scope groups should review their qualifying income analysis with tax advisers. The 0% rate on qualifying income remains available under UAE domestic corporate tax law, but its interaction with the Pillar Two top-up calculation requires separate modelling.

On the VAT side, review supplier onboarding and invoice verification processes against the new due diligence standard. The FTA has historically taken a strict approach to input tax recovery disputes, and the new decision adds a formal layer to what was previously a more principles-based obligation.

Engage a UAE-licensed tax adviser before the year-end filing cycle. Pillar Two compliance requires data aggregation across the group that takes time to build, and the first filing deadlines will not move to accommodate late starters.

# Sources

• The National: UAE issues new regulation for top-up tax on large corporations
• Gulf News: UAE sets new tax reporting rules for multinational companies
• Khaleej Times: UAE spells out new tax filing rules for multinational firms
• Tfipost.com: What the UAE's 2026 Corporate Tax Rules Actually Mean for a Free Zone Company
• EY: UAE issues decision introducing due diligence requirements for input VAT recovery