How to file your first UAE Corporate Tax return in 2026 (December year-end guide)

If your UAE company had a December fiscal year end, your first Corporate Tax return is due 30 September 2026. That is 9 months after year end — and it is closer than most founders realise.

This guide walks through what to file, when, how, and the three decisions that will affect what you actually owe.

Who has to file

Every UAE-resident company must file a Corporate Tax (CT) return, regardless of revenue or profit. There is no minimum threshold below which the return is optional. If you have a trade licence, you file.

That includes:

• Mainland LLCs and free-zone companies (DMCC, DIFC, ADGM, IFZA, JAFZA, RAKEZ, etc.)
• Sole proprietorships if incorporated as an entity
• Branches of foreign companies
• Family offices structured as companies

Individuals earning employment income only do not file CT. Freelancers with an active freelance permit are usually exempt if their business income falls below AED 1 million per year — but they should confirm with the FTA if unsure.

The four dates that matter

There are four deadlines every founder should have in a calendar before the filing window opens:

FTA registration. If you haven't registered your entity with the Federal Tax Authority for Corporate Tax yet, do it first. Registration is separate from filing, has its own deadline, and unregistered companies cannot file. See our guide to registering for UAE Corporate Tax for the process.

Fiscal year end. Most UAE companies use 31 December. Some use 31 March or 30 June. The return deadline is measured from this date, not from the calendar year.

Return filing deadline. 9 months after fiscal year end. For a December year-end, that is 30 September 2026. For a March year-end, 30 December 2026.

Tax payment deadline. Same day as the return. There is no split between "file now, pay later" — the amount you compute in the return must be paid on the same day.

Miss the return deadline and you accrue AED 500 per day for the first 12 months, then AED 1,000 per day after that. There is no automatic extension.

Three decisions that shape what you owe

Before you touch the numbers, three decisions determine your final tax bill. Get them wrong and you either overpay or lose access to reliefs.

Decision 1: Small Business Relief election

If your revenue was under AED 3 million in the tax period and every prior tax period since UAE CT started (1 June 2023), you can elect Small Business Relief. Elect it and you pay 0% CT on the entire period, regardless of profit.

Two things to know:

1. It is not automatic. You must actively tick the box on the return. Miss it and you pay 9% on profits above AED 375,000 like everyone else. No do-overs on the first return.
2. It sunsets on 31 December 2026 under Ministerial Decision 73/2023 unless the FTA extends. If your fiscal year ends December 2026, this is the last cycle it applies to unless an extension is announced. Plan accordingly.

If you're unsure whether you qualify, run the numbers against every prior tax period since June 2023 — Small Business Relief is a cumulative test, not just a snapshot of the current year.

Decision 2: Tax group vs. standalone entities

If you run more than one UAE company under common ownership, you can elect to file as a tax group — one consolidated return, one tax computation, losses in one entity offsetting profits in another.

Requirements to form a tax group:

• All entities must be UAE resident
• Parent must own at least 95% of each subsidiary
• All entities must share the same fiscal year end
• No entity is a free-zone qualifying person taxed at 0%

Filing as a group can save real money if one entity is loss-making and another is profitable — but the election is per tax period, cannot be reversed mid-year, and locks all group members into common accounting standards. Most first-time filers stay standalone. Think carefully before grouping.

Decision 3: Free-zone status (0% vs 9%)

If your company sits in a free zone (DMCC, DIFC, ADGM, JAFZA, etc.), you may qualify for the 0% Qualifying Free Zone Person rate on your "qualifying income" — but only if you meet strict conditions:

• Adequate substance in the free zone (staff, premises, expenditure)
• Qualifying activities (a specific FTA list — mostly trading in goods to non-UAE buyers, holding shares, treasury services, certain intellectual property)
• Transfer pricing compliance (arm's length pricing with related parties)
• No election out to 9%
• De minimis test: non-qualifying income under 5% of total revenue OR AED 5 million (whichever is lower)

Fail any of these and your entire free-zone income falls to 9%. There is no partial application — it's binary. Most first-time free-zone filers get this wrong because they assume the 0% is automatic. It is not.

The filing checklist

Once the three decisions above are made, you can file. Here is the practical checklist:

1. Log into EmaraTax (tax.gov.ae) with your FTA credentials
2. Confirm your tax period and TRN — these are pre-filled but always verify
3. Enter revenue — total revenue for the period, including any exempt or free-zone income (you separate qualifying vs non-qualifying inside the return)
4. Enter deductible expenses — payroll, rent, utilities, professional fees, depreciation (per the FTA rules)
5. Apply reliefs — Small Business Relief election, tax group election, free-zone qualifying income
6. Review computed tax — the return calculates 9% on profits above AED 375,000 after reliefs
7. Pay — same day. GIBAN transfer or credit card
8. Save the receipt — you'll need it if the FTA queries the return

Do not submit the return until every field is correct. There is no "save draft and come back tomorrow" grace period once submitted — corrections require a voluntary disclosure filing, which adds penalties.

What most first-time filers get wrong

From what we see across the UAE SME market, five mistakes account for most CT issues in the first year:

• Missing the FTA registration deadline — you cannot file if you're not registered. Registration alone can trigger AED 10,000 in late-registration fines.
• Forgetting the Small Business Relief tick box — no do-overs. If you qualified and didn't elect, you pay 9%.
• Assuming free-zone = 0% automatically — it's a strict elective status with substance and activity tests
• Not reconciling books before filing — your CT return must match your audited financial statements. Reconcile first, file second.
• Late payment on the same day as filing — the tax bill must clear the FTA account by the deadline, not the day after. Time zone matters if you're paying from an overseas bank.

What OpeAre does

If you're building a UAE company from scratch, most of the above lives on paper or in someone's inbox until it goes wrong. OpeAre pre-loads every UAE compliance deadline for your entity — CT return, VAT if you're registered, UBO refresh, ESR notification, MOHRE payroll, trade licence renewal — into one shared calendar with alerts at 60, 30 and 14 days out. You never have to remember which portal cares about which filing.

For CT return season specifically, we track the deadline against your entity's fiscal year end, prompt you to reconcile books ahead of time, and flag Small Business Relief eligibility based on the revenue you've logged. Whether or not the filing itself needs an accountant, at least the calendar and the reliefs are handled.

Try OpeAre free for 7 days and get every UAE compliance deadline in one place.