UAE Domestic Minimum Top-up Tax: who it catches and when
The UAE now has a second corporate tax. It does not replace the 9 per cent — it sits on top of it, applies only to very large multinational groups, and is filed separately on its own return with its own deadline.
The Domestic Minimum Top-up Tax lifts the effective tax rate on UAE profits to 15 per cent where it falls below that. For a free zone entity at 0 per cent inside a large group, that is a six-to-fifteen point change nobody in the finance team may have budgeted for.
Are you in scope?
Two exclusions worth naming. A UAE-headquartered group with no operations outside the UAE is not multinational and is outside the rules however large it is. And an Investment Entity located in the UAE is not subject to the top-up tax.
Why the UAE introduced it, and why that helps you
Under the OECD Pillar Two framework, if a jurisdiction taxes a large group's profits below 15 per cent, another country can collect the difference through the Income Inclusion Rule or the Undertaxed Profits Rule. The money leaves regardless.
By legislating a qualified domestic minimum top-up tax, the UAE keeps that revenue and the group deals with one authority instead of several. The practical consequence for a group finance team is that the tax is payable in the UAE, on a UAE return, under UAE administration — rather than being assessed abroad on UAE profits.
How it interacts with the 9 per cent
| Corporate tax | DMTT | |
|---|---|---|
| Legal basis | Federal Decree-Law No. 47 of 2022 | Cabinet Decision No. 142 of 2024, under Federal Decree-Law No. 60 of 2023 |
| Who | Every taxable person | UAE members of in-scope MNE groups only |
| Rate | 0% to AED 375,000, then 9%; QFZP 0% on qualifying income | Tops the UAE effective rate up to 15% |
| Base | Taxable income from IFRS statements, adjusted | GloBE Income less the Substance-based Income Exclusion |
| Measured | Per entity | Jurisdictionally — all UAE constituent entities aggregated |
| Return | Corporate tax return, 9 months after period end | Separate Top-up Tax Return, with the GloBE Information Return |
| Deadline | 9 months | 15 months, or 18 for the transitional year |
The free zone consequence
This is where the change actually lands. A Qualifying Free Zone Person pays 0 per cent on qualifying income. If that entity belongs to a group above the EUR 750 million threshold, the 0 per cent drags the UAE jurisdictional effective rate down — and DMTT tops the whole jurisdiction back up to 15 per cent.
For groups in that position the free zone incentive is neutralised at the margin. It does not become worthless — the Substance-based Income Exclusion carves out a return on payroll and tangible assets before the top-up applies, which rewards genuine operations — but the headline benefit of a 0 per cent rate largely disappears. Groups near the threshold should model both sides before committing to a free zone structure.
The filing timetable
| Fiscal year | Standard deadline (15 months) | Transitional year (18 months) |
|---|---|---|
| Calendar year ending 31 Dec 2025 | 31 March 2027 | 30 June 2027 — the first filing for most groups |
| Calendar year ending 31 Dec 2026 | 31 March 2028 | — |
The transitional extension applies to the first fiscal year a group falls within scope. Both the Top-up Tax Return and the GloBE Information Return are filed through EmaraTax, and the DMTT liability is separate from the corporate tax liability — two filings, two computations, two payments.
Chartered Advisory tests the EUR 750 million threshold against the group's consolidated statements, models the UAE jurisdictional effective tax rate including any free zone entities, and maps the two filing timetables against each other.
Avail our UAE corporate tax servicesWhat to do now
- Test the threshold properly. EUR 750 million of consolidated revenue in the Ultimate Parent Entity's statements, in two of the last four years — not this year alone, and not the UAE entity's own revenue.
- List every UAE constituent entity, including joint-venture structures. The computation aggregates them.
- Model the UAE jurisdictional ETR, blending free zone 0 per cent entities with 9 per cent ones.
- Quantify the Substance-based Income Exclusion. Payroll and tangible assets in the UAE reduce the profit exposed to top-up, so genuine substance now has a direct cash value.
- Register and diarise both returns. Corporate tax at nine months, DMTT at fifteen or eighteen — they do not coincide, and the DMTT deadline is easy to lose because it falls so long after the year end.
- Revisit free zone structuring. If a 0 per cent position is simply topped up to 15 per cent, its cost — audit, substance, restricted customers — may no longer be buying anything.
The mistakes that cost the most
- Testing the UAE entity's revenue instead of the group's consolidated revenue.
- Assuming a UAE-only group is caught. It is not multinational, so it is out of scope.
- Computing entity by entity. The ETR is jurisdictional.
- Assuming DMTT replaces corporate tax. It sits on top, with its own return.
- Missing the 15-month deadline because it lands so long after year end.
- Keeping a free zone structure whose 0 per cent is being topped up anyway.
Sources
This guide is written against the official and clearly labelled professional references below. Rates, thresholds and portal procedures change between reviews, so open the primary source before relying on a figure.
Questions people also ask
Does the DMTT apply to my UAE company?
Only if it is part of a multinational group whose Ultimate Parent Entity reported consolidated revenue of EUR 750 million or more in at least two of the four preceding financial years. The test is the group's consolidated revenue, not the UAE entity's own turnover, and a UAE-headquartered group with no operations outside the UAE is not multinational and falls outside the rules however large it is.
Does the DMTT replace the 9 per cent corporate tax?
No. It sits on top. Corporate tax is computed as usual on the UAE entities, then the DMTT compares the resulting effective tax rate on UAE profits against 15 per cent and charges the difference. They are separate computations, separate returns and separate liabilities, filed on different deadlines.
How does it affect a free zone company at 0 per cent?
Significantly, if the group is in scope. The effective tax rate is computed jurisdictionally across all UAE constituent entities aggregated, so a 0 per cent free zone entity pulls the UAE rate down and the top-up lifts the whole jurisdiction back to 15 per cent. The Substance-based Income Exclusion softens this by carving out a return on UAE payroll and tangible assets, but the headline benefit of the 0 per cent largely disappears for in-scope groups.
When is the first DMTT return due?
Fifteen months after the fiscal year end as standard, extended to eighteen months for the transitional year — the first year a group comes into scope. For a calendar-year group whose FY2025 ended 31 December 2025, that means 30 June 2027. Both the Top-up Tax Return and the GloBE Information Return go through EmaraTax.
How is the top-up actually calculated?
The jurisdictional effective tax rate for the UAE is compared with 15 per cent, and the shortfall is applied to Excess Profit — GloBE Income reduced by the Substance-based Income Exclusion. Because the exclusion is driven by UAE payroll and tangible assets, groups with real operations here face a smaller top-up than groups booking profit against minimal substance.
Send the tax year and the transaction or filing involved, and we will tell you what is actually required.
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