UAE Corporate Tax Filing Deadline 2026: What to File Before September 30

The UAE corporate tax filing deadline 2026 for companies with a financial year ending 31 December 2025 is 30 September 2026. By that date you must file your corporate tax return and pay any tax due through the Federal Tax Authority's EmaraTax portal. The deadline falls nine months after your tax period ends, and it applies even if your business owes zero tax.

This is the corporate tax return deadline UAE owners need on their calendar right now. If you are a company owner who already registered for corporate tax, this is the guide that picks up where registration left off. You have your Tax Registration Number. Now the return itself is coming due. Below you will find the exact deadline for your financial year, what you have to prepare, the penalty ladder for filing late, and the one trap that catches profitable and loss-making companies alike: you still have to file, even at zero.

When is the UAE corporate tax filing deadline in 2026?

Your deadline is nine months after the end of your tax period. That single rule, set out in Federal Decree-Law No. 47 of 2022 and confirmed in the Federal Tax Authority's corporate tax returns guidance, decides your date. It is not a fixed calendar day for everyone. It moves with your financial year-end.

For the large majority of UAE companies, the financial year runs 1 January to 31 December. If your year ended on 31 December 2025, count nine months forward: your return and payment are both due by 30 September 2026. For calendar-year companies, this is effectively the second corporate tax return. The first return, for the year ending 31 December 2024, was already due by 30 September 2025 and has passed. So 30 September 2026 is the live deadline this season, not the first-ever filing.

The table below translates the nine-month rule into a date for the most common year-ends. Find your financial year-end in the left column and read across.

The filing date and the payment date are the same day. There is no separate, later window to pay, and there are no advance instalments during the year. You calculate the tax, submit the return, and settle the balance in one deadline.

Newly incorporated companies have their own clock

If you set up your company recently, your first tax period may be shorter or longer than a standard 12 months. The rule stays the same: nine months after your tax period ends. Only the start point differs.

A worked example. Say your company was incorporated on 1 June 2024 and you chose a 31 December year-end. Your first tax period runs from incorporation to the end of your first full financial year, so 1 June 2024 to 31 December 2025, a period of about 19 months. Nine months after 31 December 2025 gives you the same 30 September 2026 deadline. A company incorporated on 1 August 2025 with a 31 July 2026 year-end would instead face a first-return deadline of 30 April 2027. Check your incorporation date and your chosen year-end, then count nine months. If registration is still on your to-do list rather than filing, start with our step-by-step on how to register for UAE corporate tax first, because you cannot file a return without a Tax Registration Number.

Do I have to file if I owe zero tax?

Yes. This is the trap that catches the most owners, so it is worth stating plainly: filing a return and paying tax are two separate obligations. You may owe nothing and still be legally required to file.

The UAE corporate tax rate is 0% on taxable income up to AED 375.000 and 9% on the portion above that. Many small companies land entirely in the 0% band and reasonably assume there is nothing to do. There is. Every taxable person registered for corporate tax must submit a return for each tax period, whatever the result. The Federal Tax Authority urges taxable persons to file and settle within the deadline regardless of whether tax is owed.

The point matters most for the two groups who legitimately expect a zero bill:

• Small Business Relief claimants. If your revenue is at or below AED 3 million and you elect Small Business Relief, you are treated as having no taxable income for the period. You still file the return, and you make the election inside that return. Skip the filing and you both miss the relief and start the penalty clock.
• Qualifying Free Zone Persons. A free zone company holding Qualifying Free Zone Person status keeps a 0% rate on its qualifying income, but the return is how it demonstrates that status. No return, no proof, and the penalty applies regardless of the 0% outcome.

A loss-making year is the same story. Losses do not remove the duty to file; in fact, filing is how you register the loss so you can carry it forward against future profit. So the honest summary is short. If you are registered for corporate tax, you file. Zero income, a loss, Small Business Relief, a 0% free zone rate: none of them is an exemption from filing.

What do I need to prepare to file your corporate tax return?

Filing on EmaraTax is quick when your numbers are ready and slow when they are not. Prepare these before you open the return:

• Finalised financial statements for the tax period, prepared under IFRS (or IFRS for SMEs where eligible). Your taxable income starts from your accounting profit, then adjusts. If your revenue exceeds AED 50 million, or you are a Qualifying Free Zone Person, your accounts must be audited.
• Your Tax Registration Number and EmaraTax login. You register and file in the same portal, so if you got your TRN you already have the account.
• The tax adjustments that turn accounting profit into taxable income: disallowed expenses, exempt income, related-party (transfer pricing) figures, and any relief elections.
• Records to support every figure. The UAE requires you to keep corporate tax records for seven years after the end of the tax period. The return draws on them, and the FTA can ask to see them.

Sound bookkeeping through the year is what makes this painless. If your records need work, read our guide to the bookkeeping and audit rules UAE companies must meet before the deadline crowds you.

How to file your return, step by step

1. Log in to EmaraTax at the Federal Tax Authority portal with your credentials or UAE Pass.
2. Open the corporate tax return for the correct tax period from your taxable person dashboard.
3. Enter your financial data, starting from the accounting profit in your finalised statements.
4. Apply your adjustments and elections (Small Business Relief, exempt income, transfer pricing, loss carry-forward).
5. Review the calculated tax. The portal computes 0% up to AED 375.000 and 9% above.
6. Submit the return, then pay any balance via GIBAN bank transfer or card before the deadline.

The registration and TRN steps are covered separately, since you need that number in hand before step one. If you want the wider picture of rates, thresholds and exemptions first, our overview of how UAE corporate tax works sets the context.

What is the penalty for filing your corporate tax return late?

The late-filing penalty in the UAE is an administrative penalty of AED 500 for each month, or part of a month, for the first twelve months, rising to AED 1.000 for each month thereafter. It is set by Cabinet Decision No. 75 of 2023 on administrative penalties, it is automatic, and it applies even to a nil return. A one-day delay counts as a full month.

Because it stacks month on month, the late corporate tax filing penalty in the UAE climbs fast. The table shows how the penalty ladder builds for a return filed late.

That is the penalty for filing late. A separate charge applies if you file but do not pay on time.

Late payment: 14% a year on what you owe

If tax is due and you miss the payment deadline, the FTA applies a monthly late-payment penalty of 14% per annum on the unpaid amount, under the same Cabinet Decision No. 75 of 2023. It accrues from the day after the deadline until the tax is settled in full. On AED 100.000 of unpaid tax left for a year, that is roughly AED 14.000 in addition to any filing penalty.

The two penalties are independent. A Small Business Relief claimant with zero tax can still be hit with the AED 500-a-month filing penalty for a late nil return. A profitable company that files on time but pays late escapes the filing penalty and takes the 14% interest instead. Meet both dates and you avoid both.

Is there an extension to the 30 September 2026 deadline?

No routine or blanket extension exists for the 30 September 2026 deadline. The Federal Tax Authority has not announced one, and the nine-month rule stands. Do not plan around a last-minute reprieve.

There is a common point of confusion worth clearing up. The FTA did grant a one-off concession for first returns covering short "stub" tax periods that ended on or before a set date, and a separate late-registration penalty waiver ran for a limited window. Both were specific, time-limited measures that have expired. Neither is a standing extension, and neither changes your 30 September 2026 date. The safe assumption is simple: the deadline is real, it will not move, and the only reliable protection is filing early.

The bottom line before September 30

For a company with a 31 December 2025 year-end, the UAE corporate tax filing deadline 2026 is 30 September 2026, nine months after the year closed. File the return and pay whatever is due by that day, through EmaraTax. File even if you owe nothing, because Small Business Relief and the free zone 0% rate are claimed and proven in the return, not by skipping it. Missing the date starts an AED 500-a-month clock that becomes AED 1.000 a month after a year, plus 14% annual interest on any unpaid tax. None of that is worth the risk when the fix is to prepare your accounts and file with time to spare.

If you are unsure which financial year-end applies to you, what your first-return date is, or whether your accounts need auditing, contact START for a free consultation and we will map your exact deadline and filing steps.