Corporate Tax Filing Deadline UAE 2026: Every Date You Need to Know

The single most important fact about the Corporate Tax filing deadline in the UAE is that it is not one fixed date for everyone — it depends on your financial year-end. Under the nine-month rule, your return and payment fall due nine months after your year-end closes. For the many companies on a calendar year, that means 30 September 2026. This guide sets out every 2026 deadline, what to prepare, the penalties for missing it, and how to file through our UAE Corporate Tax filing service from AED 249.

How do UAE Corporate Tax deadlines work? The nine-month rule

Under Federal Decree-Law No. 47 of 2022 (Article 53), every taxable person must file a Corporate Tax return and pay any tax due within nine months from the end of the relevant tax period — which for most businesses is their financial year. This is a hard deadline enforced by the FTA with automatic penalties, not a target.

Two points catch people out. First, the filing deadline and the payment deadline are the same date — you cannot submit the return on time and settle the tax later. Both the return and the payment must be completed by the nine-month mark. Second, the obligation applies to every registered entity: mainland companies, free zone entities, branches, and natural persons within Corporate Tax scope (broadly, resident individuals carrying on business with turnover above AED 1 million). Even zero taxable income, Small Business Relief, or a 0% QFZP position does not remove the duty to file.

What are the 2026 Corporate Tax filing deadlines?

Your exact deadline is simply your financial year-end plus nine months. The table below maps common year-ends to their filing-and-payment deadline.

The next major deadline is 30 September 2026, covering the large population of companies with a 31 December 2025 financial year-end. If that is you, treat the sections below as your action list. You can sanity-check any tax due with our UAE Corporate Tax calculator.

When is the first deadline for a newly incorporated company?

If your company was incorporated after Corporate Tax began, your first tax period starts from the date of incorporation. The FTA allows a first tax period of up to 18 months so you can align to your preferred year-end, and the deadline is still nine months from the end of that chosen first period. The examples below all assume a 31 December year-end.

What do you need to prepare before filing?

Start preparing at least two to three months before your deadline. Rushing a return in the final week is how errors — and later penalties — happen. Here is the full checklist.

Three of these are worth handling early with support: audit, transfer pricing and registration. We provide audit services for free zone entities, transfer pricing documentation where related-party dealings exist, and Corporate Tax registration if you do not yet hold a TRN — you cannot file without one. Ongoing bookkeeping keeps the first two tasks from becoming a year-end scramble.

How do you file a Corporate Tax return on EmaraTax?

Filing is done entirely online through the FTA’s EmaraTax portal. The sequence is straightforward once your financial statements are finalised.

1. Log in to EmaraTax at eservices.tax.gov.ae using your Corporate Tax registration credentials.
2. Open the Corporate Tax return — go to Corporate Tax and select File Return for the relevant tax period.
3. Enter your figures — revenue, expenses, adjustments and taxable income, taken from your finalised financial statements.
4. Apply reliefs — elect Small Business Relief if eligible (revenue at or below AED 3M), or reflect QFZP treatment where it applies.
5. Review against your financials — check every figure against your income statement and balance sheet.
6. Submit and pay any tax due through the same portal, then download the filing acknowledgment for your records.

What are the penalties for missing the deadline?

The FTA applies separate penalties for late filing and late payment, and they can run in parallel. The figures below reflect the CT penalty schedule under Cabinet Decision No. 75 of 2023 (as amended); treat them as indicative and confirm the current rates.

To make the numbers concrete: on the figures above, a return filed six months late with AED 50,000 of unpaid tax would attract roughly AED 3,000 in late-filing penalties plus around AED 3,500 in late-payment penalties — about AED 6,500 in total, and still climbing. Professional filing on time costs from AED 249. The economics of filing on time are not close. For a fuller treatment of the penalty framework, see our UAE Corporate Tax guide.

Do free zone companies have to file?

Yes — and this is one of the most expensive misconceptions in UAE tax. “My free zone company has 0% tax, so I don’t need to file” is wrong. All free zone entities must file an annual Corporate Tax return. Filing is the mechanism by which the FTA verifies your Qualifying Free Zone Person (QFZP) status — if you do not file, the FTA cannot confirm your 0% eligibility, and you risk losing it, with income taxed at the standard 9% rate.

QFZP status also depends on the de minimis rule: if non-qualifying revenue exceeds the lower of 5% of total revenue or AED 5 million, the entity loses QFZP status. That is exactly the kind of threshold a proper return and supporting financials are designed to monitor. A 0% rate is a status you maintain through compliance, not a reason to skip it.

Does Small Business Relief remove the need to file?

No. If your revenue is under AED 3 million, you may qualify for Small Business Relief (SBR) under Ministerial Decision No. 73 of 2023, which treats your taxable income as nil — effectively 0% tax. But you must still file a return and actively elect SBR on it. The relief is not automatic; if you do not file and elect, you do not have it.

Two limits matter. SBR is available only for tax periods ending on or before 31 December 2026, and it is not available to QFZPs or to members of multinational enterprise groups. If either applies to you, SBR is off the table and you file on the normal basis. Our Small Business Relief guide covers eligibility in full.

What does a month-by-month filing timeline look like?

For a company with a 31 December 2025 year-end and a 30 September 2026 deadline, spreading the work across the year keeps the final month calm.

Can you get an extension on the deadline?

Not as a matter of routine. Unlike some jurisdictions, the FTA has not provided a general extension mechanism for the nine-month Corporate Tax deadline — there is no standard form to request extra time. In rare, documented force majeure circumstances the FTA may consider relief, but that is not guaranteed and requires a formal application.

The practical takeaway is simple: plan to file on time, because there is no safety net. If your deadline is close and your accounts are not ready, the answer is to accelerate the preparation — not to assume an extension will be available. That is precisely where getting an FTA-registered agent involved early pays for itself.