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Miss your UAE Corporate Tax deadlines in 2026 and the penalties stack up fast: AED 10,000 for late registration, AED 500 per month for a late return, and 14% per annum on unpaid tax. Yet one of the biggest misunderstandings among UAE business owners is still the difference between a calendar year and a financial year. Under the Corporate Tax regime, your tax period is generally your Gregorian calendar year or the 12-month period for which you prepare financial statements.
That means there is no single UAE-wide filing date for every company. Your filing and payment deadline depends on your own tax period end date, not on a universal 31 December deadline.
Choosing the right financial year is therefore more than an accounting preference. It affects reporting timing, internal close processes, and when your tax cash outflow becomes due. Sarmat, a registered typing centre in Deira, Dubai, handles this paperwork for clients every week — so this guide reflects how those deadlines play out in practice.
Official UAE guidance states that a Tax Return must be filed, and any Corporate Tax due must be paid, within nine months from the end of the relevant tax period.
Don’t want to figure this out alone? Sarmat is a KHDA-certified training provider and registered typing centre in Deira, Dubai. Message us on WhatsApp — we answer questions like this every day.
| Your Financial Year End | Your Filing and Payment Deadline |
|---|---|
| 31 December 2025 | 30 September 2026 |
| 31 March 2026 | 31 December 2026 |
| 30 June 2026 | 31 March 2027 |
Important: for some newly incorporated UAE companies, the first tax period may be shorter or longer than 12 months. Official FTA guidance also confirms that, in certain cases, a first tax period can be between 6 and 18 months.
This is the most familiar structure for many businesses. It is easy to explain internally, commonly aligns with management reporting habits, and keeps year-end communication straightforward for stakeholders.
This can be useful if your business is seasonal or if you want your reporting cycle to reflect the way revenue is actually generated across the year. A different year-end can also shift when your Corporate Tax payment becomes due, which may help with internal cash-flow planning.
This is a business-planning choice, not a shortcut around compliance. The key is to select a financial year that your accounting team can close accurately and consistently.
The FTA has also announced a waiver initiative for certain late Corporate Tax registrations where the first return or annual declaration is submitted within seven months from the end of the first tax period, subject to official eligibility conditions. Businesses should still plan around the standard deadlines rather than assume waiver availability.
If you are starting a business, it is cheaper to choose the right reporting structure at setup than to correct accounting, filing, and deadline mistakes later. Your tax calendar should be aligned with bookkeeping discipline, VAT tracking, bank reconciliation, and management reporting from the beginning.
That is exactly why Sarmat built the Advanced Accounting & Financial Management course. It is designed to help founders and finance teams set up a practical financial framework early, including chart of accounts structure, documentation flow, and compliance readiness before the first filing deadline arrives.
Every deadline on this page is only dangerous when nobody in your company owns it. Sarmat's finance-documentation team in Deira handles Corporate Tax registration, VAT registration, and quarterly filing paperwork for Dubai companies — which means keeping client registrations and filing dates straight is part of the day job.
Send us your licence issue date and financial year-end on WhatsApp, and we will confirm which registration and filing dates apply to your company — before a missed date turns into a penalty.
The deadline is 30 September of the following year. UAE Corporate Tax requires the return to be filed and any tax due to be paid within nine months from the end of the relevant tax period — so a 31 December 2025 year-end lands on 30 September 2026.
Yes. The Federal Tax Authority allows the tax period to follow whichever 12-month financial year a business actually uses to prepare audited statements. A 1 April – 31 March year, for example, shifts the filing deadline to 31 December and can suit seasonal businesses or those aligning with parent-company cycles abroad.
AED 10,000. The FTA imposes this administrative penalty for failing to register within the timeframe set out under Cabinet Decision No. 75 of 2023 on tax-procedure penalties.
Late filing is AED 500 per month for the first 12 months after the deadline, then AED 1,000 per month from month 13 onwards. Late payment carries a separate 14% per annum penalty, calculated monthly on the unpaid Corporate Tax balance until settled.
Yes. The Federal Tax Authority confirms a first tax period can run between 6 and 18 months for newly incorporated UAE companies, depending on incorporation date and the financial year-end the business chooses to adopt going forward.
The FTA has announced a waiver initiative under which the AED 10,000 late-registration penalty can be reversed if the first Corporate Tax return or annual declaration is submitted within seven months from the end of the first tax period — subject to the FTA's published eligibility conditions. Plan around the standard deadlines rather than rely on the waiver.
No — the filing deadline is unchanged. Small Business Relief, elected under Ministerial Decision No. 73 of 2023, treats taxable income as zero for businesses with revenue below AED 3 million, but you must still register, maintain records, and submit a tax return within nine months of the tax period end. The relief currently applies to tax periods ending on or before 31 December 2026.
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