For most UAE businesses, the corporate-tax story since 2023 has been the 9 per cent regime: its introduction, its first filing season, its enforcement. For a smaller but economically significant group of companies, 2026 introduces a second, parallel story. This year is the first operational year of the UAE's Domestic Minimum Top-up Tax — the DMTT — enacted through Cabinet Decision No. 142 of 2024. The DMTT is the UAE's implementation of the OECD's Pillar Two global minimum tax, and for the large multinational groups within its scope it changes the headline number from 9 per cent to an effective minimum of 15.
The DMTT is widely misunderstood, in two opposite directions. Some businesses assume it applies to them when it does not; others assume the UAE's low-tax reputation is unaffected when, for the largest groups, it has materially changed. This article sets out what the DMTT is, who it actually catches, how it interacts with the 9 per cent regime and the free-zone incentives, and what in-scope groups should be doing during this first operational year.
What the DMTT is
Pillar Two is an OECD-led international agreement under which large multinational enterprise groups should pay an effective tax rate of at least 15 per cent in every jurisdiction in which they operate. The mechanism is a top-up: where a group's effective rate in a given country falls below 15 per cent, an additional charge is levied to bring it up to the floor. The crucial design question is which country collects that top-up. A Domestic Minimum Top-up Tax answers it decisively: by enacting a DMTT, the UAE ensures that any top-up arising on profits earned in the UAE is collected by the UAE itself, rather than being swept up by the tax authority of the group's parent jurisdiction. The DMTT does not raise the UAE's general tax rate. It ensures that, for groups already destined to pay 15 per cent somewhere under Pillar Two, the UAE's share is paid here.
Who is in scope — and who is not
This is the point most worth getting right. The DMTT applies only to constituent entities of multinational enterprise groups whose consolidated annual revenue meets the Pillar Two threshold of EUR 750 million, in at least two of the four preceding fiscal years. That threshold is high by design. The overwhelming majority of UAE businesses — every SME, every owner-managed company, every domestic-only group, and the great majority of free-zone companies — fall entirely outside it. For them, nothing changes: the 9 per cent regime, Small Business Relief and the free-zone framework continue exactly as before. The table below sets out who pays what.
| Taxpayer profile | Applicable rate | Basis |
|---|---|---|
| Small business (under the relief threshold) | 0% | Small Business Relief, while available |
| Qualifying Free Zone Person | 0% on qualifying income | Subject to QFZP conditions on substance and activity |
| Standard mainland / non-qualifying company | 9% | On taxable income above AED 375,000 |
| Non-qualifying free-zone income | 9% | Income outside the QFZP scope |
| In-scope MNE group (consolidated revenue EUR 750m+) | 15% effective minimum | DMTT top-up under Pillar Two |
The single most useful thing a UAE business can do with the DMTT is determine, definitively, whether it is in scope. If the group's consolidated revenue is comfortably below EUR 750 million, the DMTT is simply not its concern. If the group is near or above the threshold — or is part of a larger international group whose global revenue meets it — then the DMTT is very much its concern, and this first operational year is when the work begins.
The mechanics, in brief
For an in-scope group, the DMTT is not a simple multiplication. It requires computing a Pillar Two effective tax rate for the UAE — a calculation based on GloBE rules that define income and covered taxes in their own specific way, which is not identical to the ordinary corporate-tax computation. Where that jurisdictional effective rate comes out below 15 per cent, the DMTT levies the difference. In practice this means an in-scope group must run two parallel sets of figures: its ordinary 9 per cent corporate-tax position, and its GloBE position for Pillar Two. The data demands of the second are substantial, and they are the real work of this first year.
Related Insights
UAE Corporate Tax: A Comprehensive Guide for 2026 and BeyondThe 9% regime has moved from introduction to enforcement — the comprehensive guide.Free Zone Tax Benefits in 2026: What's Left After the QFZP RulesWhich free-zone benefits remain strong and which the QFZP criteria have narrowed.UAE Corporate Tax: The Second Filing Season and the Compliance TrapsQFZP mandatory audits, rising FTA audit capacity and the penalties that catch businesses.The 2026 compliance calendar
For an in-scope group, 2026 is a year of data discipline rather than dramatic deadlines. The Pillar Two return for a fiscal year is not due until well after that year closes, but the information it requires must be captured throughout the year — reconstructing GloBE data after the fact is far harder than recording it as you go. The timeline below is indicative; precise dates depend on the group's fiscal year-end and on the filing periods set by the regulations.
| Period | Action |
|---|---|
| Throughout the 2026 fiscal year | First year in which the DMTT applies; capture GloBE data as it arises |
| Ongoing | Maintain Pillar Two data — covered taxes and GloBE income by jurisdiction |
| After fiscal year-end | Compute the UAE jurisdictional effective tax rate; determine any top-up |
| Within the filing period set by the regulations | File the DMTT return / GloBE Information Return (an extended period applies for the first year) |
| In parallel | Coordinate with Pillar Two filings in the group's parent and other jurisdictions |
What in-scope groups should do now
The first-year priorities are practical. Confirm scope formally, with reference to the consolidated-revenue test, and document the conclusion. Identify every UAE constituent entity of the group, because the DMTT looks at the group, not the single company. Establish, with the group's auditors and tax advisers, the data the GloBE computation will require — and check whether the existing accounting systems actually capture it, because frequently they do not without modification. Model the likely outcome: a group benefiting from free-zone 0 per cent treatment or other incentives may find its UAE effective rate sits below 15 per cent, which means a real top-up, which means a real cash-flow and provisioning consequence the board should know about now rather than discover at filing. The groups that handle the first year well are the ones that treated it as a systems-and-data project starting early in 2026, not a filing exercise starting after year-end.
The interaction with free-zone incentives
The DMTT's interaction with the UAE's free-zone regime deserves a clear statement, because it is where misunderstanding is most expensive. The 0 per cent QFZP rate remains fully in force, and for the vast majority of free-zone companies — those below the EUR 750 million threshold — it delivers exactly what it always has. But for a free-zone entity that is part of an in-scope multinational group, the economics shift: the GloBE effective-rate calculation does not care that the headline rate is zero, and if the group's UAE effective rate falls below 15 per cent, the DMTT collects the top-up. The 0 per cent rate is not abolished for these groups — but its net benefit is reduced, because the difference is recaptured through the DMTT rather than left with the company. For an in-scope group, free-zone structuring decisions should be modelled with the DMTT in the calculation from the outset.
- 2026 is the first operational year of the UAE's Domestic Minimum Top-up Tax, enacted by Cabinet Decision No. 142 of 2024 — the UAE's Pillar Two implementation.
- The DMTT applies only to multinational groups with consolidated revenue of EUR 750 million or more; SMEs and domestic groups are entirely outside it.
- For in-scope groups it sets an effective minimum rate of 15%, with the UAE collecting any top-up itself rather than ceding it to a parent jurisdiction.
- In-scope groups must run a parallel GloBE computation — defined differently from ordinary corporate tax — and capture the data throughout the year.
- The 0% QFZP free-zone rate continues, but for an in-scope group its net benefit can be recaptured through the DMTT — model free-zone structures with the DMTT included.
Polaris Perspective
The DMTT changes the picture for large multinational groups and changes nothing for everyone else — and knowing, with certainty, which group you are in is the first deliverable. Polaris advises businesses on UAE corporate tax, Pillar Two scoping, free-zone structuring and the compliance systems an in-scope group needs in place this year. If your group is near the EUR 750 million threshold, a definitive scoping assessment now is far cheaper than a surprise at filing.
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