What UAE Businesses Need to Know About the Corporate Tax Return Deadline

Ahmad Alagbari Chartered Accountants | Corporate Tax Advisory

If your business follows a January to December financial year, 30 September 2026 is a date you need to have circled on your compliance calendar. This is the deadline by which your Corporate Tax return must be filed and any tax due must be paid to the Federal Tax Authority.

Corporate Tax was introduced in the UAE under Federal Decree-Law No. 47 of 2022 and has applied to financial periods starting on or after 1 June 2023. For most businesses operating on a calendar year, the financial year ending 31 December 2025 represents their second taxable period. The filing deadline for that period is 30 September 2026.

This is not a soft deadline. The FTA does not offer general extensions, and penalties begin accruing from the day after the due date, regardless of whether your business owes any tax at all.

The 9-Month Rule: How Your Deadline Is Calculated

Under UAE Corporate Tax law, every registered taxable person must file their return and pay any liability within nine months of the end of their relevant tax period. The filing date and payment date are treated as a single obligation. Submitting your return without settling the tax, or paying without filing, both count as non-compliance.

For businesses that process payments via bank transfer, note that the FTA counts payment as received when funds land in their account, not when the transfer is initiated. If you are paying close to the deadline, factor in processing time.

Who Must File?

The obligation to file is broad. It applies to:

• All UAE-incorporated mainland companies, regardless of size or profit level.
• Free zone entities, including those that qualify for the 0% rate as a Qualifying Free Zone Person (QFZP). The 0% rate on qualifying income does not remove the filing requirement.
• Natural persons (freelancers, sole proprietors, self-employed professionals operating under a UAE trade license) whose total business income exceeds AED 1 million in a Gregorian calendar year.

Many free zone businesses assume that because their tax liability is zero, they do not need to file. This is not correct. A missed filing deadline triggers a penalty even when no tax is owed. For QFZP businesses specifically, failing to file on time also puts their preferential tax status at risk.

Even a business reporting a loss or operating below the taxable threshold must still submit a return. The return is how the FTA confirms eligibility for any reliefs or exemptions you have claimed.

The Corporate Tax Rates

The UAE applies a straightforward two-tier rate structure under Federal Decree-Law No. 47 of 2022:

• 0% on net taxable income up to AED 375,000
• 9% on net taxable income above AED 375,000

These rates apply to taxable income after allowable deductions. This means a business with AED 500,000 in net taxable income pays 9% only on the AED 125,000 above the threshold, not on the full amount.

Small Business Relief: A Window That Closes at the End of 2026

For businesses with annual revenue at or below AED 3 million, Small Business Relief (SBR) is available under Article 21 of Federal Decree-Law No. 47 of 2022. It allows qualifying businesses to be treated as having zero taxable income for the relevant tax period, effectively reducing their Corporate Tax liability to zero regardless of actual profit.

There are a few things to understand clearly about this relief before assuming it applies to you.

It is not automatic. SBR must be actively elected in your Corporate Tax return on EmaraTax. If you submit your return without making the election, the relief does not apply, and it cannot be added after the fact.

The AED 3 million threshold is cumulative. If your revenue exceeded AED 3 million in any prior tax period since Corporate Tax began, you are no longer eligible, even if your current year revenue is below the threshold.

It expires on 31 December 2026. SBR applies only to tax periods ending on or before 31 December 2026. For periods after that date, the standard 0% and 9% rates apply to everyone.

It comes with trade-offs. Electing SBR means you cannot carry forward tax losses or disallowed interest from that period. If your business is loss-making or carries significant interest costs, it may be worth calculating whether electing SBR or opting into the standard regime better serves your longer-term tax position.

Qualifying Free Zone Persons (QFZPs) are excluded. Businesses that hold QFZP status cannot elect for Small Business Relief.

Penalties for Non-Compliance

Under Cabinet Decision No. 129 of 2025, effective 14 April 2026, the UAE has aligned its Corporate Tax penalty framework with the wider tax penalty regime. The penalties are structured to compound over time and apply regardless of whether any tax is actually owed.

On the late payment penalty specifically: at 14% per annum calculated monthly, this is a meaningful ongoing cost. On an unpaid tax liability of AED 200,000, penalties alone would reach AED 28,000 within 12 months. The incentive to file and pay on time is a financial one, not just a regulatory one.

Late Registration? There Is Still a Waiver Window

The FTA has offered a one-time relief for businesses that registered for Corporate Tax late and incurred the AED 10,000 penalty. If your business is filing its first Corporate Tax return and you file within seven months of the end of your first tax period, the late registration penalty is waived automatically. For businesses whose first tax period ended on 31 December 2025, that seven-month window closed on 31 July 2026.

If you missed this window, the penalty remains. However, speaking with a registered tax advisor about your options is still worthwhile, particularly if there are grounds for a voluntary disclosure or penalty reconsideration.

How to Prepare Before 30 September 2026

The most common reason businesses miss filing deadlines or submit inaccurate returns is leaving preparation too late. Below is a practical checklist to work through now.

• Confirm your Corporate Tax registration. Make sure your TRN is active on EmaraTax and that your business details, including trade license information, are current.
• Close your books for the period ending 31 December 2025. Your return draws directly from your financial statements. These must be finalised and reconciled before you begin the return.
• Determine if an audit is required. Audited financial statements are required for businesses with revenue at or above AED 50 million and for all Qualifying Free Zone Persons, regardless of revenue level. If this applies to you, engage your auditor early.
• Decide your tax regime before filing. If you are considering Small Business Relief, a tax group election, or QFZP status, make that decision before you open the return. Some elections are irreversible once submitted.
• Reconcile your taxable income. Not all accounting income is taxable income. Certain items require adjustment under the Corporate Tax Law, including non-deductible expenses and related-party transaction adjustments.
• Allow time for payment processing. Do not initiate payment on the deadline day itself. Bank transfers require processing time, and the FTA treats payment as received when funds arrive, not when they leave your account.

We Can Handle This For You

At Ahmad Alagbari Chartered Accountants, we work with businesses across Dubai, Sharjah, Abu Dhabi, and ADGM on Corporate Tax registration, return preparation, and ongoing compliance advisory. Our team handles the full filing process, from reviewing your financial statements to submitting your return on EmaraTax, so you can focus on running your business.

We are also offering a free Corporate Tax consultation for businesses that are unsure of their filing position, want to understand their Small Business Relief eligibility, or need help getting organised before the September deadline.

Disclaimer: This article is intended for general informational purposes only and does not constitute legal or tax advice. Deadlines, rates, and penalty structures are based on information available as of the date of publication. Individual circumstances vary. We recommend consulting a qualified tax professional for advice specific to your business.