UAE Corporate Tax Filing Season 2026: Your 30 September Deadline Checklist
If your company's financial year ended on 31 December 2025, mark 30 September 2026 in red. That is the day your corporate tax return is due, and it is also the day any tax you owe has to be paid. Both happen on the same date, which is the part that catches people out.
This is not a guide to what corporate tax is or how the rates work. We cover all of that on our corporate tax in UAE page. This is the practical countdown: who the September deadline applies to, what to have ready, the mistakes that cost businesses money every filing season, and a checklist you can actually work through before the FTA portal closes on you.
First, is 30 September actually your deadline?
The corporate tax return is due nine months after the end of your tax period. The date everyone talks about, 30 September 2026, is the deadline for businesses whose financial year runs from January to December and ended on 31 December 2025. That covers most companies in the UAE, which is why this date matters to so many.
If your year-end is different, your deadline shifts:
| Financial Year End | Filing & Payment Deadline | Status |
|---|---|---|
| 31 December 2025 | 30 September 2026 | 🔴 Upcoming |
| 31 March 2026 | 31 December 2026 | 🟡 Later 2026 |
| 30 June 2025 | 31 March 2026 | ✓ Already Passed |
Check your trade licence and your accounts to confirm which period you are filing for. If you genuinely are not sure, that uncertainty is itself a reason to get help early rather than in the last week.
One thing you must sort before anything else: registration
You cannot file a return without a Corporate Tax Registration Number.
If you have not yet registered with the FTA, that is the first job — not the last. Registration and filing are two separate steps, and late registration carries its own fixed penalty of AED 10,000, entirely separate from filing penalties. Most businesses reading this will already be registered, since registration deadlines were staggered through 2024 and 2025. But if a new entity, a dormant company, or a branch has slipped through, deal with it now. Our team handles corporate tax registration end-to-end if you need it done quickly.
The pre-filing checklist
Work through these in order. The earlier items take the most time, which is exactly why people underestimate them.
Close and reconcile your books
Your return is built on your financial statements, and those are only as good as your bookkeeping. If your accounts for the year are not yet finalised, reconciled, and free of unexplained entries, start here. Backlogs are common and are the single biggest reason filings run late. If yours is behind, updating your backlog accounts is the first thing to fix.
Prepare financial statements under IFRS
UAE corporate tax is calculated from financial statements prepared to IFRS. Many companies also need these statements audited, depending on their size and structure. Getting a clean set of audited financial statements ready takes time and coordination with your auditor, so do not leave it to September.
Decide on your reliefs and elections early
This is where good advice pays for itself. Several decisions are made at the point of filing and often cannot be reversed for that period:
- Small Business Relief — if your revenue is AED 3 million or below. For eligible businesses this can mean a 0% liability, but it is available only for tax periods ending on or before 31 December 2026, and you have to elect for it.
- Qualifying Free Zone Person status — if you operate in a free zone and meet the conditions for 0% on qualifying income.
- Tax grouping — if you have multiple related entities and want to file as one.
Each of these has conditions and trade-offs. Decide before you start the return, not halfway through it.
Compute your taxable income
Accounting profit is not the same as taxable income. You start from your financial statements and make the adjustments the law requires: adding back disallowed expenses, applying exemptions, factoring in any available reliefs. This is the technical heart of the return and the part most worth having reviewed by someone who does it regularly.
Gather transfer pricing and related-party records
If you transact with related parties or connected persons, you may need transfer pricing disclosures and supporting documentation. Pulling this together late — especially across group entities — is a familiar bottleneck. Identify now whether it applies to you.
Line up the cash to pay
Payment is due on the same day as the return — 30 September. Filing on time but paying late still triggers interest. The late payment charge runs at 14% per annum on the unpaid amount, accruing monthly with no cap. If you expect a liability, plan the cash for it the same way you would plan for any large supplier payment.
File on EmaraTax and keep your records
The return is submitted through the EmaraTax portal. Once filed and paid, keep everything. UAE corporate tax law requires you to retain accounting records and supporting documents for seven years, and the FTA can ask to see them.
The mistakes that cost businesses every September
A few errors come up again and again. None of them are complicated to avoid once you know to look for them.
Assuming a nil return means no filing
If you owe nothing, you still have to file. A late nil return attracts AED 500 a month just like any other — "we made no profit" is not a reason to skip it.
Forgetting that payment is due the same day
Plenty of businesses file comfortably and then get hit with interest because the money went out a fortnight later. File and pay together.
Treating accounting profit as the tax figure
Without the required adjustments, your computation will be wrong, and an incorrect return carries its own penalty.
Missing the Small Business Relief window
Eligible companies sometimes pay tax they did not owe simply because nobody elected for the relief in time.
Leaving registration or records to the end
You cannot file without a TRN, and you cannot prepare a defensible return on messy books.
What happens if you miss the deadline
The penalties stack, which is why the deadline is worth respecting.
The reassuring part is that none of this is hard to avoid. The deadline is fixed and known months in advance. What separates a smooth filing from a stressful one is starting early enough that closing the books, preparing statements, and making your elections are calm decisions rather than last-minute scrambles.
A simple timeline to work back from
If your year ended 31 December 2025, a sensible rhythm looks like this:
Finalise and reconcile accounts
Close your books for the year, resolve any outstanding reconciliation items, and ensure all records are clean and supported.
Prepare financial statements & elections
Get your financial statements prepared and audited where required. Settle your relief elections — Small Business Relief, QFZP status, tax grouping — before starting the return.
Complete taxable income computation
Build the taxable income calculation from your IFRS financials and have it reviewed. Confirm the payment amount and arrange funds.
File and pay — well before the day itself
Submit on EmaraTax and make payment. Do not wait until 30 September — portals get busy and banks take time to clear payments.
Don't spend your September on this. Let us handle it.
A&A Associate handles corporate tax registration, accounting and bookkeeping, financial statement audits, and the return itself — so the whole filing sits with one team. If you would rather not spend your September on this, talk to us and we will take it off your desk.
