The Q4 2026 Compliance Calendar for DIFC and ADGM Companies

Most corporate calendars we review are thorough up to 30 September and thin after it. That is understandable. The corporate tax return for 31 December 2025 year ends was the date everyone was watching, and it has gone. What follows is a run of seven dated obligations in the fifteen weeks from 28 October 2026 to 24 January 2027, several of them introduced only this year.

Very few entities face all seven. A stand-alone DIFC holding company might have two or three; a fund vehicle inside a large multinational group could have five. So the useful way to read the list is as a set of tests. Each date below says who it catches, and anything that does not describe your entity can be struck out. The recurring filings that come round every year, such as confirmation statements, licence renewals and accounts, are not repeated here. They are in our DIFC annual compliance calendar and our ADGM annual compliance calendar, which still apply as normal.

The seven dates, in order

One item belongs on the calendar permanently rather than this quarter. Under FTA Decision No. 15 of 2026, which has applied since 15 September 2026, an application for corporate tax exemption is made after each tax period ends and no later than 90 business days after it. Business days exclude weekends and federal holidays, so for a 31 December 2026 year end the date falls in mid-May 2027.

Two dates that have already passed

The first is the corporate tax return for financial years ended 31 December 2025, due on 30 September 2026. The deadline is nine months from the end of the tax period the Federal Tax Authority (FTA) has recorded for you, so check the dates on EmaraTax rather than the year end in your articles. If the return has not gone in, file on management accounts now and amend once the audit is signed, rather than waiting for final figures.

The second is 1 October 2026, when two VAT changes came into force together. Cabinet Decision 149 of 2026 changed the treatment of staff housing, cash-paid suppliers and credit notes, and FTA Decision No. 13 of 2026 introduced supplier verification before input tax can be deducted. The 28 October return is the first one prepared under both, so invoice templates, credit note wording and supplier files need to be right before it is filed, not after. Our summary of the October 2026 VAT changes lists what moved.

October: a VAT return, a provider appointment and the first catch-up

Three dates land in four days, usually on the same finance team. The VAT return on 28 October is routine: the return and payment for the quarter ending 30 September. Monthly filers run on their own cycle.

The 30 October date is less routine. Businesses with revenue of AED 50 million or more must have appointed an Accredited Service Provider (ASP), the accredited intermediary that validates and transmits e-invoices and reports the data to the FTA. The deadline was moved from 31 July 2026 by an amendment to Ministerial Decision No. 244 of 2025, but go-live was not moved. It is still 1 January 2027. That leaves about nine weeks between signing with a provider and issuing live invoices, which is tight for a group with several entities to onboard. The Ministry of Finance publishes the instruments and timeline on its official e-invoicing page. A mistake we see often is assuming a free zone holding company is outside the system. Scope follows business transactions, and a holding entity still receives invoices it must be able to accept. Our guide to e-invoicing for DIFC and free zone companies works through holding companies, SPVs and intra-group recharges.

31 October is the first catch-up window under Decision 15, for UAE companies wholly owned and controlled by a government entity or government controlled entity, covering tax periods that ended before 1 January 2026. If that does not describe you, move on. If it does, list each earlier period that has no exemption in place and check the conditions were met in each one. See our guide to FTA Decision 15 of 2026.

November and December: top-up tax and the partnership catch-up

The 30 November date is the transitional registration deadline for the Domestic Minimum Top-up Tax, the UAE's version of the OECD's 15% global minimum tax. It applies to entities of multinational groups with consolidated revenue of at least EUR 750 million in at least two of the four preceding fiscal years. Under FTA Decision No. 12 of 2026, where the group's first in-scope fiscal year ended before 30 April 2026 (which includes a calendar 2025 year), its UAE entities must register by 30 November 2026. Otherwise registration is due within seven months of the end of the first in-scope fiscal year. The FTA's decisions are published on its legislation page.

The test is the size of the group, not where the entity sits. A DIFC company paying 0% on qualifying income as a Qualifying Free Zone Person can still be in scope, and registration can be required even where the top-up tax works out at nil. Funds that qualify as Investment Entities are generally outside the charge, though their revenue can count towards the group threshold. A family holding company is unlikely to be caught; a subsidiary of a large group may well be, and its local board is not always told. Our top-up tax registration guide covers the scope tests and the option of one designated filing entity registering for the whole UAE group.

31 December is the second Decision 15 catch-up, for foreign companies wholly owned by exempt owners and for qualifying limited partnerships and the companies they wholly own. The partnership date is the one with the most at stake. Under Cabinet Decision No. 34 of 2025, a qualifying limited partnership that does not apply in the first tax period the rules apply to it loses the exemption for that period and the four that follow. The catch-up covers tax periods that began in 2025 and ended on or before 31 August 2026. We would aim to have these applications drafted by the end of November, so that December, with its year-end and holiday pressures, is for submitting rather than writing.

1 January 2027: three regimes start on the same day

E-invoicing Phase 1 goes live for the businesses that appointed a provider by 30 October. That means testing in December with real master data, not discovering gaps in the first week of January.

The UAE also adopts the updated Common Reporting Standard (CRS 2.0) and the Crypto-Asset Reporting Framework (CARF), the OECD standards for automatic exchange of financial account and crypto-asset information, with first exchanges in 2028. The OECD's 2023 publication sets out both. The changes bring electronic money and some indirect crypto holdings into scope, and require the role of each controlling person, such as a foundation's founder or council member, to be reported. For DIFC foundations, family offices and funds the real task is classification: is each entity a Reporting Financial Institution, or a Non-Financial Entity whose accounts will be reported by someone else? Write the reasoning down. Our article on CRS 2.0 and CARF for DIFC structures goes through the classification.

The third start applies only to DFSA authorised firms. On 1 October 2026 the DFSA announced four rulemaking instruments in its notice of amendments to legislation. The prudential reporting instrument, No. 443 of 2026, took effect on 2 October. Instruments 444, 445 and 446 of 2026, amending the Conduct of Business Module, the Islamic Finance Rules and the Glossary, take effect on 1 January 2027. An ordinary DIFC company, a Prescribed Company or a foundation is not an authorised firm and is not directly subject to them. A group with a regulated entity in it should make sure that entity's compliance officer has the appendices.

24 January 2027: the Prescribed Company CSP deadline

The Prescribed Company Regulations 2026 came into force on 24 July 2026. A Prescribed Company, the DIFC's passive holding vehicle often used as an SPV, that existed before that date and is not exempt must appoint a Corporate Service Provider within six months, which is 24 January 2027.

Exemption depends on control. A company controlled by a Registered Person, an Authorised Firm, a Government Entity or a Publicly Listed Entity, as the Regulations define them, is exempt. The trap is the foundation-owned SPV: foundations are excluded from the Registered Person category, so a company controlled by a DIFC foundation is not exempt on that basis, and nor is a company owned directly by an individual or a family. The Regulations let the DIFC Registrar allow a longer period on application, but that is a discretion, so plan on the date as written. An SPV that has finished its job may be better wound up. The documents to gather and the steps are in our guide to the Prescribed Company CSP deadline.

The order we would work through it

1. List, entity by entity, your VAT period, revenue band, group size, exempt or fund status, DFSA authorisation and Prescribed Company status, then strike out every date that does not match.
2. Confirm the two passed dates: that the 30 September return was filed and that the 1 October VAT changes are reflected in templates and supplier files before the 28 October return.
3. If you are in the AED 50 million band, confirm the provider contract is signed and book December test dates.
4. Ask the group tax team, in writing, whether the group is within top-up tax scope and who is registering the UAE entities.
5. Draft any 31 December Decision 15 applications in November.
6. For each DIFC Prescribed Company formed before 24 July 2026, decide in October or November whether it is exempt, needs a CSP or should be wound up. January is too late to start.

How Atlas helps

Atlas Corporate Services is a DFSA-registered corporate service provider in the DIFC. For the DIFC and ADGM entities we look after, we keep the corporate calendar, the registers and the board records in one place through our company secretarial and governance service. We can also act as Corporate Service Provider for a Prescribed Company, which deals with the 24 January 2027 date, and we can tell you quickly whether an existing SPV is exempt. The tax items on this list, including VAT, corporate tax exemption applications and top-up tax registration, are handled with GTAG, our sister company in the GTAG/Assetica group. We do not advise on DFSA Rulebook obligations; those sit with an authorised firm's compliance officer.

This article is general information and does not constitute legal, tax or regulatory advice. Dates and scope tests are summarised from the sources named and can change, so read the primary text of each decision. Confirm the position for your own entity with a qualified adviser before acting.