Corporate Tax Deadline: 30 September 2026 | Mirhaa
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Corporate Tax Deadline: Why 30 September 2026 Matters for Your Business

The single most important tax date of the year for most UAE businesses — what must be done before it, what it costs to miss, and a week-by-week plan.

Corporate Tax

One date, most of the UAE

If your financial year ended on 31 December 2025 — as it does for the vast majority of UAE companies — your Corporate Tax return and payment are due by 30 September 2026, exactly 9 months after year end. This applies to mainland companies, free zone entities, and many licensed individuals alike. Here is why 30 September 2026 matters for your business — and the plan to meet it comfortably.

Filing is the last step, not the first

A return can only be filed once the work behind it is done: books closed and reconciled, bank statements matched, taxable income computed with all adjustments — exempt income, non-deductible expenses, related-party pricing — and reliefs applied. For a business whose 2025 bookkeeping is incomplete, the real deadline is weeks earlier than September 30.

What missing it actually costs

Late filing draws an automatic AED 500 per month (or part month) for the first 12 months, rising to AED 1,000 per month after that. Late payment adds percentage-based penalties on the unpaid tax itself. None of this requires an FTA officer to notice you — the system applies it automatically.

Small Business Relief still means filing

Revenue of AED 3 million or less lets you elect Small Business Relief and pay nothing — but the relief exists only inside a filed return. An unfiled return means penalties even for a business that owed zero tax.

Free zone companies: extra homework

Qualifying Free Zone Persons claiming 0% must file with audited financial statements and transfer pricing compliance in place. If your free zone company has never been audited, that audit needs to start now, not in September.

A realistic timeline from today

July: finalise 2025 books and start the audit if you need one. August: compute taxable income, resolve related-party questions, decide on reliefs. Early September: review and file — leaving buffer for EmaraTax queries. Businesses that file in September’s last week are gambling with portal congestion and their own missing documents.

Where we come in

We take the whole chain — backlog bookkeeping, computation, audit coordination, and filing on EmaraTax with proof of submission. One team, one accountable timeline, fixed fee agreed upfront.

💡 Quick tip: Rule of thumb: if your 2025 books aren’t closed by the end of July, you are already behind schedule — start this week.

References & Official Sources

  1. Federal Decree-Law No. 47 of 2022 on the Taxation of Corporations and Businesses — official link
  2. Federal Tax Authority — Corporate Tax portal — official link
  3. Cabinet Decision No. 75 of 2023 — Administrative Penalties for Corporate Tax — official link

This article is general information, not formal tax advice. Regulations change — always confirm your position with a qualified advisor.

FAQs

Frequently Asked Questions

When exactly is the Corporate Tax deadline for FY 2025?
30 September 2026 for financial years ending 31 December 2025 — returns are due within 9 months of year end.
What is the penalty for filing late?
AED 500 per month for the first 12 months, then AED 1,000 per month, plus late-payment penalties on any unpaid tax.
Do I file if my company made a loss?
Yes. Filing is mandatory regardless of profit or loss — and filing properly protects your right to carry losses forward.
Can Mirhaa handle everything if my books are behind?
Yes — backlog accounting, computation and filing are handled as one engagement with a fixed quote.

Stay ahead of every deadline

Corporate Tax, VAT, bookkeeping — handled by one accountable team, fixed fees.

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