If your company’s financial year ended on 31 December 2025, your corporate tax return is due by 30 September 2026 — and for most UAE businesses, this is the first corporate tax return they have ever filed. Miss it, and the penalties start stacking up quickly. File it correctly and on time, and you may even qualify to have an earlier penalty waived or refunded.

With the deadline weeks away, here is exactly what you need to know: who must file, what happens if you’re late, and how the FTA’s penalty-waiver relief works.

The key date: 30 September 2026

UAE Corporate Tax must be filed within nine months of the end of your tax period. For the very common 31 December year-end, that means:

• Tax period: 1 January 2025 – 31 December 2025
• Filing and payment deadline: 30 September 2026

The same nine-month rule applies to other year-ends — a company with a 31 March 2026 year-end, for example, would file by 31 December 2026. Both filing the return and paying any tax due fall on the same deadline. There is no separate, later payment date.

Snapshot: 9% corporate tax applies to taxable profits above AED 375,000; profits up to that threshold are taxed at 0%. But even businesses that owe nothing must still register and file.

Who has to file a corporate tax return?

Almost every business does. Corporate tax filing is required for:

• Mainland companies and most free zone companies (including Qualifying Free Zone Persons, who still file even when taxed at 0%).
• Branches of foreign companies operating in the UAE.
• Natural persons (individuals) conducting business with turnover above the registration threshold.

A frequent and costly misunderstanding: being taxed at 0% does not exempt you from filing. If you are registered for corporate tax — and you should be — you must submit a return, even if your tax liability is zero.

The penalties for missing the deadline

Non-compliance is enforced through the FTA’s administrative penalty regime. The main ones to know:

The FTA has also signalled a firm enforcement stance — publicly reporting tens of thousands of inspection visits and significant penalties collected. In other words, “no one will notice” is not a strategy.

The relief most businesses don’t know about: the penalty waiver

Here is the good news, and the reason to act now rather than give up if you’re behind.

The FTA introduced a penalty-waiver initiative for the late-registration penalty. The core condition is straightforward:

File your first corporate tax return (or annual declaration) within seven (7) months of the end of your first tax period, and the AED 10,000 late-registration penalty can be waived — and refunded if you have already paid it.

For a 31 December 2025 first period, that seven-month window is even tighter than the nine-month filing deadline — which is a strong incentive to file early, not at the last minute. The waiver covers several scenarios, including businesses that:

• Have an unpaid penalty and then file on time (penalty waived).
• Have already paid the penalty and then file on time (penalty refunded).
• Haven’t registered yet — the penalty is waived if they register and file within the window.

Applications and returns go through the EmaraTax platform. The takeaway: even if you’re late registering, filing promptly can still wipe out the AED 10,000 fine.

“I haven’t filed yet” — what to do right now

If the deadline is looming and you haven’t started, work through this quickly:

1. Confirm you’re registered for corporate tax on EmaraTax. If not, register immediately.
2. Close your 2025 accounts and calculate taxable income (with the right adjustments — this is where errors happen).
3. Check your reliefs — Small Business Relief, the AED 375,000 threshold, or Qualifying Free Zone Person status.
4. File and pay through EmaraTax before 30 September 2026.
5. Check waiver eligibility if you registered late — filing within seven months may still save you AED 10,000.

The single biggest risk isn’t the deadline itself — it’s an incorrect first return, which can trigger further penalties and FTA queries.

How HM Corporate Services can help — before 30 September

HM Corporate Services files corporate tax returns for UAE businesses accurately and on time. We can:

• Assess your position — registration status, tax period, reliefs and liability.
• Prepare and file your return correctly through EmaraTax.
• Check waiver eligibility so you don’t pay a penalty you could avoid.
• Set you up for a smoother second filing cycle.

The deadline won’t move. Your penalties will only grow. Book a corporate tax filing consultation with HM Corporate Services today → and file with confidence before 30 September.

Frequently asked questions

What is the UAE corporate tax filing deadline for 2026? For companies with a 31 December 2025 year-end, the deadline to file and pay is 30 September 2026 — nine months after the tax period ends.

Do I have to file if my company made no profit or owes no tax? Yes. If you are registered for corporate tax, you must file a return even if your taxable income is below AED 375,000 and your liability is zero.

What is the penalty for filing corporate tax late in the UAE? Late filing attracts AED 500 per month for the first 12 months and AED 1,000 per month thereafter, plus a AED 10,000 penalty for late registration and further penalties on unpaid tax.

Can the AED 10,000 corporate tax penalty be waived? Yes — under the FTA waiver initiative, filing your first return (or annual declaration) within seven months of the end of your first tax period can waive the late-registration penalty and refund it if already paid.

How do I file my UAE corporate tax return? Returns are filed through the EmaraTax portal. Given this is a first filing for most businesses, many use a tax adviser to ensure the taxable-income calculation and reliefs are correct.