Direct answer: UAE companies with a financial year ending 31 December 2025 must file their second corporate tax return on EmaraTax by 30 September 2026. Free zone entities can still claim the 0% rate on qualifying income under Cabinet Decision No. 100 of 2023 — but only if they keep non-qualifying revenue below the de minimis threshold, maintain adequate substance, and elect Small Business Relief or the standard regime correctly before the deadline.

This guide walks through what changed between cycle 1 and cycle 2, why qualifying income remains the single biggest filing risk for free zone businesses in 2026, and the practical EmaraTax checklist DBS Documents Clearing LLC uses with clients heading into the September deadline. It is written for owners and finance leads of Dubai mainland and free zone companies whose financial year is the calendar year 2025.

Cycle 1 vs Cycle 2: what changed in the 12 months between filings

Cycle 1 — the first full year of UAE corporate tax — saw filings for financial years starting on or after 1 June 2023. For most calendar-year entities, that meant a return covering 1 January to 31 December 2024, filed by 30 September 2025. Cycle 2 covers the financial year 1 January to 31 December 2025 and is due 30 September 2026. Two regulatory updates make cycle 2 materially different from cycle 1.

First, the Domestic Minimum Top-up Tax (DMTT). Under Cabinet Decision No. 142 of 2024, the UAE applies a 15% top-up tax to multinational enterprise groups with consolidated annual revenue of at least EUR 750 million for financial years starting on or after 1 January 2025. Cycle 2 is the first filing window in which in-scope MNE groups must reconcile the standard 9% corporate tax against the 15% DMTT floor. According to the UAE Ministry of Finance, this aligns the UAE with the OECD Pillar Two GloBE Rules and protects the country from out-of-jurisdiction top-up taxation by other states.

Second, the qualifying income guidance for free zones has matured. The UAE Federal Tax Authority issued additional clarifications during 2025 on how trading income, distribution activities, holding activities, and intra-group transactions interact with the 0% qualifying free zone person rate. Many cycle 1 returns were filed with caveats; cycle 2 returns are expected to be cleaner — and audit exposure is higher for any entity that filed a "qualifying" claim in cycle 1 that no longer holds up under refined guidance.

The corporate tax framework in one screen

Before the checklist, it helps to anchor on the headline numbers most owners need to remember in 2026. The framework below is established under Federal Decree-Law No. 47 of 2022 and supporting Cabinet and Ministerial Decisions.

Three corrections we make in almost every cycle 2 onboarding call: the AED 375,000 0% band is not a tax-free allowance like the UK personal allowance — it sits inside the same return; Small Business Relief is an election, not an automatic exemption; and QFZP status is a yearly test, not a permanent classification.

Free zone qualifying income — what it actually means in 2026

Cabinet Decision No. 100 of 2023, supported by Ministerial Decision No. 265 of 2023, defines qualifying income for free zone persons as income derived from "qualifying activities" with other free zone persons (where that other person is the beneficial recipient) plus income from qualifying activities with non-UAE persons, plus any other income provided the de minimis requirement is not breached.

"Qualifying activities" include manufacturing, processing, holding of shares and securities, ownership and operation of ships, fund management, wealth and investment management, headquarter services, treasury and financing services to related parties, financing and leasing of aircraft, distribution from a designated zone, logistics, and any activities ancillary to the above. "Excluded activities" — which always generate non-qualifying income — include transactions with UAE mainland natural persons, banking, insurance, financing and leasing (with specific carve-outs), and ownership or exploitation of immovable property outside a designated zone.

The de minimis rule is the silent killer of many free zone tax positions. Non-qualifying revenue must be the lower of AED 5 million or 5% of total revenue. If a free zone entity does AED 4 million of qualifying revenue and AED 220,000 of non-qualifying revenue, it has breached the 5% rule and loses QFZP status for that entire tax period — every dirham of profit moves to 9%. For founders running a free zone consultancy that occasionally invoices a Dubai mainland client, that one invoice can cost more than the trade license.

The four conditions a QFZP must continue to satisfy

To stay at 0% on qualifying income, the entity must demonstrate adequate substance in the free zone, derive qualifying income as defined, not have elected to be taxed at the standard rate, and comply with transfer pricing rules under Article 34 of the Corporate Tax Law and OECD-aligned documentation. Audited financial statements prepared under IFRS are mandatory, regardless of company size, for any entity claiming QFZP status — this is the single most common compliance gap DBS sees in cycle 2 prep meetings.

The September 30 2026 EmaraTax filing checklist

For a typical Dubai free zone LLC with a 1 January–31 December 2025 financial year and revenue under AED 50 million, here is the sequence DBS uses for cycle 2.

1. Confirm tax registration is active. Log into EmaraTax and verify the corporate tax TRN is issued and the registration covers the entire 2025 tax period. Late registration penalties under FTA Decision No. 3 of 2024 remain AED 10,000 — still being assessed in 2026 against entities that delayed.
2. Lock the financial year and basis of accounting. Most free zone companies use the calendar year as the financial year. Confirm this matches the trade license issue date and the audited financials. IFRS is mandatory for QFZP claims; cash basis is unavailable unless revenue is below AED 3 million and Small Business Relief is elected.
3. Decide on Small Business Relief vs QFZP. These are mutually exclusive in any single tax period. Small Business Relief is simpler and produces a zero return for revenue under AED 3 million through 31 December 2026. QFZP is more flexible long-term but requires audited IFRS accounts, substance, and transfer pricing documentation. We model both scenarios for every client crossing AED 1.5 million in revenue.
4. Segment qualifying vs non-qualifying revenue. For QFZP claims, every revenue line must be tagged. The most common error is treating UAE mainland clients as qualifying — they are not, unless the activity falls under a narrow carve-out and the beneficial recipient test is met.
5. Run the de minimis test. Calculate non-qualifying revenue as a percentage of total revenue. If it exceeds the lower of AED 5 million or 5%, prepare to file at 9% on all taxable income for 2025.
6. Prepare transfer pricing documentation. Master file and local file thresholds apply where MNE consolidated revenue is AED 3.15 billion or the UAE entity revenue is AED 200 million. Below those thresholds, the disclosure form within the return is still mandatory if there are related-party transactions or connected-person payments.
7. Reconcile to audited financials. The return must tie to audited IFRS financial statements. Free zone authorities including IFZA, Meydan and DMCC now request the corporate tax acknowledgement at license renewal — a discrepancy here triggers questions at both FTA and free zone level.
8. File and pay by 30 September 2026. The filing and payment deadline is 9 months after financial year-end. For 31 December 2025 year-ends, that is 30 September 2026. Voluntary disclosures to correct cycle 1 errors should be submitted before cycle 2 — penalty reductions apply.

If you want the full DBS workflow with a copy of the QFZP eligibility flowchart and the EmaraTax screen-by-screen guide, our UAE corporate tax services page lists every document we collect and the timeline we follow with retainer clients. For new free zone entities still being formed, our Dubai free zone setup service includes corporate tax registration as part of the package.

Where free zone founders lose money in cycle 2

Across the cycle 2 prep work we have completed for Dubai clients between January and May 2026, the same five mistakes appear over and over.

One — claiming QFZP without audited IFRS financials. The FTA position is unambiguous: no audit, no 0%. DBS now schedules the audit engagement letter at the same time we file the corporate tax registration.

Two — invoicing a UAE mainland client and treating it as qualifying. Unless the activity is specifically carved in (designated zone distribution, certain ancillary services), mainland B2B revenue is non-qualifying. One AED 80,000 invoice from a Dubai mainland customer can blow the 5% de minimis on a small consultancy.

Three — assuming Small Business Relief is automatic. It is an election made in the return. If you forget to elect it, the entity defaults to standard regime and the AED 375,000 threshold applies — with full filing obligations on EmaraTax including supporting schedules.

Four — ignoring transfer pricing on owner remuneration. An owner taking director fees, salary, and management charges from the free zone entity must price them at arm's length. We see this missed in roughly half of cycle 1 returns.

Five — leaving cycle 1 errors unresolved. Voluntary disclosure under Federal Decree-Law No. 28 of 2022 attracts lower penalties when submitted before discovery by FTA. Fixing cycle 1 before filing cycle 2 is materially cheaper than fixing both after an audit notification.

What DMTT means if you are part of a global group

If your UAE entity is part of a multinational group with consolidated revenue of EUR 750 million or more, cycle 2 introduces a 15% Domestic Minimum Top-up Tax under Cabinet Decision No. 142 of 2024. The UAE entity may still apply the standard 9% rate or QFZP 0% rate at the entity level, but the group-level GloBE calculation tops up the effective rate to 15% in any jurisdiction where it falls below.

For most DBS founder clients this does not apply — the EUR 750 million threshold sits well above the SME bracket. But for finance directors of UAE subsidiaries within larger groups, the cycle 2 filing should be coordinated with the parent's Pillar Two reporting. Our VAT and corporate tax compliance team works alongside the group tax function in these scenarios — it is not a return you want to file in isolation.

Timeline: working backwards from 30 September 2026

Treat the deadline as the end of a 90-day project, not a 30-day scramble. The DBS recommended sequence is to lock the audit engagement and provide the auditor with full 2025 records by end of June 2026, sign off audited financials by end of August 2026, complete the EmaraTax draft return in the first half of September, and file with at least seven working days of slack before the deadline. Filing on the final day is a common pattern but a poor one — EmaraTax server load increases sharply in the last 72 hours.

FAQ — UAE corporate tax cycle 2 filing

When is the UAE corporate tax filing deadline for the 2025 financial year?

For companies with a financial year ending 31 December 2025, the corporate tax return and payment are due by 30 September 2026 — 9 months after financial year-end. The filing window opens on EmaraTax after the financial year closes and audited financials are available.

Can a Dubai free zone company still pay 0% corporate tax in 2026?

Yes, provided it meets all four Qualifying Free Zone Person conditions under Cabinet Decision No. 100 of 2023: adequate substance in the free zone, qualifying income, no election to be taxed at standard rates, and full transfer pricing compliance. Audited IFRS financial statements are mandatory regardless of revenue size.

What is the AED 375,000 corporate tax threshold?

Under Federal Decree-Law No. 47 of 2022, taxable income up to AED 375,000 is taxed at 0% and the portion above AED 375,000 at 9%. It is a graduated rate inside the same return, not a personal-style tax-free allowance.

What is Small Business Relief and who qualifies?

Small Business Relief, under Ministerial Decision No. 73 of 2023, treats the entity as having no taxable income for the period if revenue is AED 3,000,000 or less in the current and all prior tax periods. The relief applies for financial years ending on or before 31 December 2026 and must be elected in the return.

What happens if a free zone company breaches the de minimis rule?

If non-qualifying revenue exceeds the lower of AED 5 million or 5% of total revenue, the company loses QFZP status for that tax period and the entire taxable income — qualifying and non-qualifying — is taxed at the standard 9% rate. The status is also lost for the four subsequent tax periods.

Does the UAE corporate tax apply to free zone companies with only foreign clients?

The company is in scope and must register and file, but income from qualifying activities with non-UAE persons is typically qualifying income taxed at 0% for a QFZP, provided substance, audit, and transfer pricing conditions are met.

What is the UAE DMTT and which businesses are affected?

The Domestic Minimum Top-up Tax, under Cabinet Decision No. 142 of 2024, applies a 15% top-up rate to UAE entities that are part of multinational enterprise groups with consolidated annual revenue of EUR 750 million or more, for financial years starting on or after 1 January 2025. It does not affect SMEs or standalone UAE companies below that threshold.

Can DBS Documents Clearing LLC handle the cycle 2 return on our behalf?

Yes — DBS supports UAE corporate tax registration, QFZP eligibility review, audited financial coordination, EmaraTax filing, and post-filing correspondence with the FTA. We work with both Dubai mainland and free zone clients across IFZA, Meydan, DMCC, and other jurisdictions.

Next step: book a 30-minute cycle 2 readiness call

If your financial year ends 31 December 2025 and you have not yet started the cycle 2 process, the window is shorter than it looks. The DBS cycle 2 readiness call covers QFZP eligibility, Small Business Relief modelling, audit coordination, and a deadline plan tailored to your free zone and activity list. Message us on WhatsApp at +971 54 332 2846 or email info@dubaibusinessservices.com — quote "Cycle 2 readiness" and we will respond within one working day.

By Salem Basheer, DBS Documents Clearing LLC. This article reflects UAE federal tax law and Federal Tax Authority guidance available as of May 2026. It is general information for Dubai mainland and free zone businesses and is not a substitute for personalised tax advice. DBS Documents Clearing LLC is a Dubai-based business setup and tax compliance consultancy.