The UAE built its Qualifying Free Zone Person regime around a simple promise: 0% corporate tax on Qualifying Income, indefinitely, as long as the entity meets the statutory conditions. For most free zone companies that promise still holds exactly as written. But since 1 January 2025 there is a second tax sitting alongside the 9% Corporate Tax Law, and it does not care what a free zone licence says. The UAE Domestic Minimum Top-up Tax reaches directly into free zones, and it can turn a Qualifying Free Zone Person’s 0% rate into an effective 15% rate for exactly the companies it is designed to catch — without touching the underlying Corporate Tax Law at all.
This guide explains who the UAE Domestic Minimum Top-up Tax actually applies to (a much narrower group than the phrase “minimum tax” suggests), how the 15% floor is calculated on top of a 0% Qualifying Free Zone Person rate, what the Substance-Based Income Exclusion gives back, and the registration and filing deadlines free zone finance teams need on their calendar for 2026.
The UAE now enforces a 15% floor under free zone tax rates
On 11 February 2025 the Ministry of Finance released Cabinet Decision No. 142 of 2024 on the Imposition of Top-Up Tax on Multinational Enterprises, introducing the Domestic Minimum Top-up Tax. It applies to Financial Years commencing on or after 1 January 2025, and it is built to align with the OECD’s Pillar Two Global Anti-Base Erosion (GloBE) Model Rules — the same international framework more than 40 jurisdictions have now adopted in some form. The UAE has been an active participant in the OECD/G20 Inclusive Framework since 2018, so the DMTT is less a surprise policy shift than the scheduled next step in that commitment.
Two follow-up decisions matter for 2026 compliance. Ministerial Decision No. 96 of 2026, issued 22 June 2026, formally adopts the 2026 Consolidated Commentary and the latest OECD Administrative Guidance into UAE law, so the rules a company applies today already track the newest international interpretation rather than the original 2024 text in isolation. Separately, Ministerial Decision No. 131 of 2026 (7 August 2026) extended Small Business Relief eligibility to tax periods ending on or before 31 December 2029 — a reminder that the DMTT and Small Business Relief sit at opposite ends of the same tax system: one protects the smallest taxpayers, the other targets only the largest.
The mechanism itself is narrow but absolute. Where a group’s blended effective tax rate on its UAE profits falls below 15%, the DMTT collects the difference — in the UAE, not in a foreign parent jurisdiction. Unlike most countries that adopted Pillar Two, the UAE has implemented only the domestic top-up tax. It has not introduced the Income Inclusion Rule (IIR) or the Undertaxed Profits Rule (UTPR), the two rules that let a foreign tax authority claim the top-up if the local jurisdiction did not collect it first. By legislating its own Qualified Domestic Minimum Top-up Tax (QDMTT), the UAE keeps that revenue at home instead of ceding it to whichever parent-company jurisdiction would otherwise collect it under the international ordering rules.
Only free zone companies inside a €750 million group are in scope
The single most important fact for most readers of this article is also the most reassuring one: the UAE Domestic Minimum Top-up Tax does not apply to standalone free zone companies, small and mid-sized groups, or founder-owned businesses regardless of how much profit they earn locally. It applies exclusively to Constituent Entities of a Multinational Enterprise (MNE) Group whose ultimate parent entity reports consolidated group revenue of €750 million or more in at least two of the four fiscal years immediately preceding the tested year.
That threshold is tested at the ultimate parent’s consolidated financial statement level, worldwide, not at the UAE entity’s level. A UAE free zone company earning AED 40 million a year is not in scope on its own numbers — but if it is a subsidiary, branch, or joint venture of a global group that clears €750 million in consolidated revenue, its UAE profits are pulled into the group-wide GloBE calculation regardless of how small the UAE slice is. The entities actually in scope are Constituent Entities, Joint Ventures, Permanent Establishments, and Minority-Owned Constituent Entities of such groups; UAE government entities, sovereign wealth funds, international organisations, non-profit organisations, and genuine investment funds meeting the GloBE definitions are excluded from the calculation entirely, even inside an otherwise in-scope group.
In practice this means the DMTT sits squarely on top of, not instead of, the UAE’s existing free zone framework. A free zone company should first confirm its Qualifying Free Zone Person status under the ordinary 9%/0% regime, and only then ask the separate, much narrower question of whether its ultimate parent group clears the €750 million GloBE threshold. Most free zone entrepreneurs will answer no to the second question and can stop reading the DMTT-specific compliance calendar here — but finance teams inside a larger multinational structure, including regional headquarters units and shared-service free zone entities owned by a global group, cannot assume the same.
A Qualifying Free Zone Person’s 0% rate does not escape the top-up
This is the point that catches in-scope groups off guard: being a Qualifying Free Zone Person taxed at 0% on Qualifying Income does not exempt an entity from the DMTT calculation. The GloBE effective tax rate test blends all UAE Constituent Entities of the group together — mainland entities paying the standard 9% and free zone entities paying 0% — into a single jurisdictional effective tax rate for the UAE as a whole. A free zone entity sitting at a genuine, lawful 0% does not get carved out of that blend; it drags the group’s UAE-wide effective rate down, which is precisely the outcome the top-up tax is designed to correct.
Where the blended UAE effective tax rate for an in-scope group falls below 15%, the DMTT imposes a top-up charge equal to the shortfall, calculated on GloBE Income after specific adjustments to accounting profit (removing items such as certain dividends, equity gains and non-deductible taxes) and measured against Covered Taxes actually paid in the UAE. For a Qualifying Free Zone Person inside an in-scope group, this can mean the 0% rate that applies perfectly correctly under the Corporate Tax Law is topped up separately, under a different law, to reach the group’s 15% floor — two regimes, two calculations, one combined outcome. The de minimis rule that can strip QFZP status entirely operates on a completely separate 5%-of-revenue test and is not affected by DMTT scope; a company can pass de minimis cleanly and still owe a top-up if its parent group is large enough.
The Substance-Based Income Exclusion rewards real UAE operations
The GloBE rules do not tax every dollar of low-taxed profit at the full top-up rate. A Substance-Based Income Exclusion (SBIE) carves out a fixed percentage of two real, verifiable inputs — UAE payroll costs for employees who work in the UAE, and the carrying value of UAE tangible assets — before the top-up calculation runs. The larger a free zone entity’s genuine local footprint, the more profit is excluded from the calculation before the 15% test is even applied.
The carve-out percentages are set on a ten-year declining schedule adopted from the OECD Model Rules, starting higher in the early years and stepping down toward a permanent 5% floor by the early 2030s:
| Fiscal year | Payroll carve-out | Tangible asset carve-out |
|---|---|---|
| 2025 | 9.8% | 7.8% |
| 2026 | 9.6% | 7.6% |
| 2027 | 9.4% | 7.4% |
| 2028 | 9.2% | 7.2% |
| 2029 | 9.0% | 7.0% |
| 2030 – 2032 | stepping to 5.4% | stepping to 5.4% |
| 2033 and beyond | 5.0% (permanent) | 5.0% (permanent) |
The practical takeaway for an in-scope free zone entity is that substance is now worth more than it used to be in tax terms. A regional headquarters unit with a large UAE payroll and owned office space genuinely shields more profit from the top-up than a thin holding entity with the same profit but minimal local presence — a structural incentive that rewards exactly the kind of real operations free zones like DIFC, ADGM, and DMCC were built to attract in the first place.
Filing and registration deadlines are tight for in-scope groups
Constituent Entities of an in-scope MNE Group must register with the Federal Tax Authority through EmaraTax separately from their existing Corporate Tax registration — DMTT registration is not automatic just because a company already holds a Corporate Tax TRN, and the two obligations run on parallel but distinct tracks. Once registered, an in-scope entity has two filing obligations that follow the group’s financial year:
- Top-up Tax Return and payment: due within 15 months after the end of the relevant Financial Year, extended to 18 months for the first, transitional Financial Year the entity is in scope.
- GloBE Information Return (GIR): the detailed jurisdictional data return required under the OECD framework, filed on the same 15-month/18-month timetable, either directly or, where permitted, through a designated filing entity elsewhere in the group so the same data is not duplicated across every jurisdiction.
For a group with a calendar fiscal year that first became in-scope for the year commencing 1 January 2025, that puts the first Top-up Tax Return and GIR deadline in mid-2027 under the extended 18-month transitional window — a longer runway than the standard nine-month Corporate Tax filing deadline free zone finance teams are already used to, but one that requires materially more data: a full GloBE Income computation, Covered Tax reconciliation, and SBIE calculation across every UAE Constituent Entity in the group, not just a single company’s tax return. Groups should not wait until the transitional deadline approaches to start that data-gathering exercise, and the underlying accounting records supporting it fall under the same statutory record-keeping obligations that already apply to Corporate Tax.
Transitional safe harbours can reduce the top-up to zero
Recognising that building full GloBE calculations from scratch is a heavy lift in the rules’ early years, the framework includes Transitional Country-by-Country Reporting (CbCR) Safe Harbours. Where a jurisdiction-level Country-by-Country Report already shows the group clears one of three simplified tests — a de minimis revenue-and-profit test, a simplified effective tax rate test, or a routine-profits test — for a Financial Year beginning on or before 1 January 2027 and ending on or before 30 June 2028, the top-up tax for the UAE jurisdiction can be reduced to zero for that year without a full GloBE recalculation.
A separate, permanent Simplified Calculations Safe Harbour exists alongside the transitional one, giving groups an ongoing lower-effort route to demonstrate compliance in years where a full computation would be disproportionate to the risk of an actual top-up liability. Neither safe harbour removes the registration obligation — an in-scope entity still has to register and file — but both can materially reduce the calculation burden and, in many cases, the cash tax due, particularly for groups in their first one or two UAE fiscal years under the regime.
How DMTT interacts with the standard 9% corporate tax regime
It helps to see the two systems side by side, because they are frequently confused in practice — a free zone company can be entirely compliant under one and still owe under the other.
| Standard Corporate Tax | QFZP 0% regime | Domestic Minimum Top-up Tax | |
|---|---|---|---|
| Who it applies to | Every UAE taxable person | Free zone entities meeting QFZP conditions | Constituent Entities of MNE groups ≥ €750m consolidated revenue |
| Headline rate | 9% above AED 375,000 | 0% on Qualifying Income | Tops up UAE blended rate to 15% |
| Governing law | Federal Decree-Law No. 47 of 2022 | Federal Decree-Law No. 47 of 2022 + Cabinet Decision No. 100 of 2023 | Cabinet Decision No. 142 of 2024 |
| Filing deadline | 9 months after Tax Period end | 9 months after Tax Period end | 15 months (18 months first year) after Financial Year end |
| Applies to most free zone SMEs | N/A | Yes, if conditions met | No — below the €750m group threshold |
The two regimes are not competing explanations of the same tax — a company can be a fully compliant Qualifying Free Zone Person under the Corporate Tax Law and separately owe a top-up under the DMTT, because the second law only looks at whether the group’s blended UAE rate reaches 15%, not at whether the free zone entity followed every QFZP rule correctly. Getting the QFZP conditions right is necessary but not sufficient for a large group; the DMTT question has to be asked and answered separately.
Certain free zone structures are far more likely to face a top-up than others
Because the UAE Domestic Minimum Top-up Tax is scoped by the ultimate parent’s global size rather than by industry or free zone, some categories of free zone entity are statistically much more likely to sit inside an in-scope group than others, even though none of them are named directly in Cabinet Decision No. 142 of 2024:
- Regional or Middle East headquarters entities set up in DIFC, ADGM or DMCC by a global parent — the parent’s worldwide consolidated revenue is exactly the number that gets tested against the €750 million line, regardless of how modest the UAE entity’s own books look.
- Free zone trading, logistics and re-export companies owned by large multinational commodity, shipping or manufacturing groups operating through hubs such as JAFZA, KEZAD or Hamriyah, where UAE revenue is a routing point for much larger group-wide flows.
- Free zone finance, treasury and holding entities used by a listed or privately held global group to centralise intercompany lending or investment activity, since these structures were a specific policy target of the OECD Pillar Two project from the outset.
- Free zone technology, media and professional-services subsidiaries of a global brand, where the UAE entity may report modest local profit but sits inside a parent group whose worldwide revenue clears the threshold many times over.
A single-country, founder-owned free zone company — the profile of most UAE Freezone RA readers — almost never meets the €750 million consolidated-group test on its own, and remains entirely outside DMTT scope no matter how profitable it becomes locally. The Domestic Minimum Top-up Tax was built to reach large multinational structures using free zones as one link in a global chain, not to reach the free zone sector as a whole.
What free zone founders and finance teams should do now
For the overwhelming majority of UAE free zone companies, the correct action after reading this article is simply to confirm the group is out of scope and move on — the €750 million consolidated revenue threshold excludes the vast majority of free zone entrepreneurs, family-owned groups, and mid-market operators outright. For entities that are part of a larger international structure, a short internal review answers the scope question quickly:
- Check the ultimate parent’s consolidated revenue against the €750 million threshold for two of the past four fiscal years, not just the UAE entity’s own turnover.
- Map every UAE Constituent Entity in the group — mainland and free zone together — since the effective tax rate test blends them jurisdictionally rather than treating each entity in isolation.
- Quantify UAE payroll and tangible asset carrying values to estimate the Substance-Based Income Exclusion before assuming a top-up liability exists at all.
- Register separately with the FTA through EmaraTax once in-scope status is confirmed — do not assume an existing Corporate Tax registration covers it.
- Check whether a Transitional CbCR Safe Harbour applies for the current Financial Year before commissioning a full GloBE computation.
Because the GloBE computation touches consolidated group accounts, Covered Tax reconciliations across jurisdictions, and a UAE-specific SBIE calculation, this is not a return most free zone finance teams should attempt to file without a Pillar Two specialist — the stakes and the technical complexity are both far higher than a standard Corporate Tax filing.
Frequently Asked Questions
Does the Domestic Minimum Top-up Tax replace the UAE’s 9% corporate tax?
No. The DMTT is a separate, supplementary tax under Cabinet Decision No. 142 of 2024 that sits alongside the existing 9% Corporate Tax Law rather than replacing it. A company continues to file its ordinary Corporate Tax return; an in-scope entity additionally files a Top-up Tax Return and GloBE Information Return under the DMTT.
Is my free zone company affected by DMTT if it has 0% QFZP status?
Only if its ultimate parent group has consolidated worldwide revenue of €750 million or more in at least two of the last four fiscal years. Below that threshold, QFZP status under the ordinary Corporate Tax Law is unaffected by the DMTT. Above it, the entity’s 0% income is blended into the group’s UAE-wide effective tax rate calculation and can trigger a top-up.
What counts toward the €750 million revenue threshold?
The consolidated annual revenue reported in the ultimate parent entity’s consolidated financial statements, tested against the €750 million mark in at least two of the four fiscal years immediately before the tested year. It is measured at the global group level, not at the level of the individual UAE free zone entity.
How is the 15% effective tax rate actually calculated?
The UAE’s Covered Taxes paid by all the group’s UAE Constituent Entities are divided by their combined GloBE Income for the jurisdiction, after specific adjustments to accounting profit under the GloBE rules. If that blended rate is below 15%, a top-up tax equal to the shortfall is imposed, reduced first by the Substance-Based Income Exclusion.
What is the Substance-Based Income Exclusion and how much does it reduce the top-up?
It is a carve-out based on UAE payroll costs and the carrying value of UAE tangible assets, set at 9.8% of payroll and 7.8% of tangible assets for the 2025 Financial Year on a declining ten-year schedule toward a permanent 5% for both by the early 2030s. The excluded amount is removed from GloBE Income before the top-up calculation runs, so entities with genuine UAE staff and assets owe less top-up than thinly substantiated ones with identical profit.
When do in-scope companies need to register and file?
Registration with the FTA through EmaraTax is required once in-scope status is confirmed, separately from Corporate Tax registration. The Top-up Tax Return and GloBE Information Return are both due within 15 months after the Financial Year end, extended to 18 months for the first transitional Financial Year the entity is in scope.
Can the transitional safe harbour reduce the top-up tax to zero?
Yes, for Financial Years beginning on or before 1 January 2027 and ending on or before 30 June 2028, a group that clears one of three simplified Transitional CbCR Safe Harbour tests can reduce its UAE top-up tax to zero for that year without a full GloBE recalculation, though registration and filing obligations still apply.
Whether your free zone company sits comfortably outside the €750 million threshold or needs to build its first GloBE computation, getting the corporate tax fundamentals right underneath it is still the starting point. Explore UAE Freezone options today →