If you run a standalone UAE company, here is the short answer first: the UAE domestic minimum top-up tax almost certainly does not touch you. It is a 15 percent effective-rate floor aimed at very large multinational groups, not at local founders or small businesses. The vast majority of START readers can stop worrying about it right now. This guide tells you in plain terms who is in scope, who is out, and what the in-scope CFO actually has to do.
The rule has a formal name: the Domestic Minimum Top-Up Tax (DMTT, the UAE's local version of the global 15 percent minimum tax for big multinational groups). It is the UAE's home-grown piece of the OECD and G20 Pillar Two project. It is separate from the standard 9 percent corporate tax. It does not replace that rate, and it does not create a new flat tax on everyone. Let us walk through it.
Who can stop reading right now
Most people reading this are safe. This tax has a very high entry gate, and standalone businesses sit far below it.
You are almost certainly OUT of scope if any of the following describe you:
- You run a single UAE company that is not part of a larger international group.
- Your group operates only inside the UAE, with no foreign parent or foreign subsidiaries.
- Your group's worldwide revenue is nowhere near 750 million euros a year.
- You are a freelancer, a sole establishment, or a small or mid-sized business owner.
If that is you, the DMTT is not your tax. You stay on the normal UAE system: 0 percent on the first AED 375,000 of taxable profit, then 9 percent above that. To understand that everyday regime, read the standard 9% UAE corporate tax guide instead. The rest of this article is written for the small number of readers who run, or advise, a genuine multinational group.
What the UAE domestic minimum top-up tax actually is
The UAE domestic minimum top-up tax is a rule that lifts the effective tax rate on certain large multinational groups up to 15 percent inside the UAE. It applies to constituent entities (the individual member companies) of a multinational enterprise group, or MNE group, that meet a size test. The rule took effect for financial years starting on or after 1 January 2025, under Cabinet Decision No. 142 of 2024.
Read that carefully, because the wording matters. The tax does not set everyone's rate at 15 percent. It "tops up" the rate. If a qualifying group's effective tax rate in the UAE is already at or above 15 percent, there is nothing extra to pay. If the effective rate sits below 15 percent, the DMTT collects the difference, so the group reaches the 15 percent floor and no more. The official rule sits in Cabinet Decision No. 142 of 2024 on the imposition of top-up tax, published by the Federal Tax Authority.
Where it comes from: OECD Pillar Two
This is not a UAE invention in isolation. It is the UAE's domestic implementation of the OECD and G20 Pillar Two rules, also called the Global Anti-Base Erosion rules, or GloBE. More than 140 countries agreed a framework to make sure the world's largest groups pay at least 15 percent tax wherever they book profit. Each country writes its own local law to deliver that floor. The UAE chose to do this through a Domestic Minimum Top-Up Tax, which keeps the top-up revenue inside the UAE rather than letting another country collect it.
Are you in scope for the UAE 15% top-up tax?
Three questions decide it. One "no" and you are out.
Source: Cabinet Decision No. 142 of 2024, UAE Federal Tax Authority. OECD Pillar Two GloBE rules.
The size test: who pays UAE top-up tax
Here is the gate that keeps almost everyone out. A group is only inside the UAE Pillar Two 15% rule if it is a constituent entity of an MNE group with consolidated global revenue of 750 million euros or more in at least two of the four financial years immediately before the tested year.
Break that into its parts:
- Multinational. The group must operate in more than one country. A purely domestic UAE group is not an MNE group for this purpose.
- 750 million euros. This is the same threshold the OECD uses for country-by-country reporting. It is a very large number. Annual worldwide revenue, not profit.
- Two of the prior four years. A single spike year does not pull you in. The group must have crossed the threshold in at least two of the previous four financial years.
If your group fails any one of these, you are out. This is why the answer for most UAE founders is simply "no." The question of who pays UAE top-up tax really comes down to this single revenue test.
How the DMTT differs from the standard 9% corporate tax
This is where readers most often get confused, so let us keep the two regimes clearly apart.
| Feature | Standard UAE corporate tax | UAE top-up tax (DMTT) |
|---|---|---|
| Who it hits | Most UAE businesses above the small-profit threshold | Only constituent entities of MNE groups with global revenue at or above 750 million euros |
| Headline rate | 9 percent on taxable profit above AED 375,000 | A top-up that lifts the effective rate to a 15 percent floor |
| Nature | A normal flat-rate profit tax | A "make-up" tax: only the gap between your effective rate and 15 percent |
| Effective from | Financial years from 1 June 2023 | Financial years starting on or after 1 January 2025 |
| Legal basis | Federal Decree-Law No. 47 of 2022 | Cabinet Decision No. 142 of 2024 |
| Free-zone 0 percent (QFZP) | Can still apply to qualifying income | Does not protect a large MNE group from the 15 percent floor |
The crucial point: a 0 percent free-zone rate or a 9 percent mainland rate can leave a giant multinational's effective UAE rate below 15 percent. For an in-scope group, the DMTT then steps in to fill the gap. For a small business, none of this happens, because the size test was never met. If you want the fundamentals of the everyday rate, see how UAE corporate tax works.
How the top-up is calculated, in plain terms
The mechanics follow the OECD GloBE method. Stripped to its core, an in-scope group does four things for its UAE operations:
- Work out GloBE income. Take the accounting profit of the UAE constituent entities and adjust it under the GloBE rules.
- Work out covered taxes. Add up the UAE taxes already paid on that income, mainly the 9 percent corporate tax.
- Calculate the effective tax rate (ETR). Divide covered taxes by GloBE income. That gives the group's real UAE rate.
- Apply the top-up. If the ETR is below 15 percent, multiply the shortfall by the excess profit. That product is the top-up tax due.
A short example shows the logic. Say a multinational's UAE entities have an effective rate of 9 percent. The gap to the 15 percent floor is 6 percentage points. The DMTT charges roughly that 6 point gap on the relevant profit, so the group ends up paying about 15 percent in total, not 24 percent. The top-up is the difference, never a second full tax. This is the heart of the UAE Pillar Two 15% rule.
How the top-up works: lifting 9% up to the 15% floor
Worked example for an in-scope multinational whose UAE entities pay an effective 9%.
Illustrative example before the substance-based carve-out. Source: OECD Pillar Two GloBE rules, Cabinet Decision No. 142 of 2024.
The substance-based carve-out
The calculation is not done on raw profit. The DMTT includes a substance-based income exclusion, a carve-out that shields a slice of profit linked to real activity in the UAE. In plain terms, a group can subtract a set percentage of its eligible UAE payroll costs and a set percentage of the carrying value of its tangible UAE assets before the top-up is worked out. The idea, borrowed directly from the OECD model, is that genuine substance (real people, real buildings, real equipment) earns a buffer. The carve-out percentages start higher and step down over a transition period, in line with the OECD GloBE schedule. The Ministry of Finance summarises the regime on its official Top-up Tax page. Treat the exact carve-out figures as something to confirm with a tax adviser for your specific year, because they change across the transition.
IIR and UTPR: what the UAE has and has not done
A common question from in-house tax teams: did the UAE also bring in an Income Inclusion Rule or an Undertaxed Profits Rule? As of 2026, the answer is no. The UAE has implemented the DMTT only. Cabinet Decision No. 142 of 2024 introduces the domestic top-up tax but does not enact an Income Inclusion Rule (IIR) or an Undertaxed Profits Rule (UTPR).
What this means in practice: the UAE collects the UAE-sourced top-up itself through the DMTT, and because the OECD has treated the UAE rule as a qualified domestic minimum top-up tax, that local collection generally takes priority. A foreign parent's home country should not be able to charge a second top-up on profit already topped up in the UAE. For UAE-headquartered groups with low-taxed foreign subsidiaries, those subsidiaries remain exposed to the IIR or UTPR of their own jurisdictions, not to a UAE one. As the regime is new, treat any cross-border position as a point to confirm with a qualified adviser. EY's technical alert on the UAE DMTT legislation is a useful Big-4 summary of these moving parts.
What an in-scope CFO should do now
If your group does clear the 750 million euro gate, then you are among the few who pays UAE top-up tax, and the first compliance cycle is already live. A short action list:
- Confirm scope formally. Run the two-of-four-years revenue test on your consolidated accounts and document the conclusion.
- Map your UAE effective rate. Calculate the real UAE ETR across all constituent entities, including any free-zone entities on 0 percent.
- Model the carve-out. Apply the substance-based income exclusion to see how much of the gap it absorbs.
- Diarise the filing. The first UAE top-up tax returns fall due in 2026 for financial year 2025, on the OECD-aligned timeline.
- Get specialist advice. This is YMYL territory. The numbers and deadlines are real, and the rules are still settling. A qualified UAE tax adviser should sign off your position.
Setting up or restructuring a UAE group is exactly the kind of decision where the right structure changes your exposure. START's advisors can help you map it properly. Contact START for a free consultation.
