Corporate Tax Filing in Dubai: The Complete 2026 Guide
If your company's financial year ended on 31 December 2025, your corporate tax return and payment are due by 30 September 2026. The Federal Tax Authority (FTA) does not grant routine extensions, and penalties apply even if you owe zero tax. This guide covers who must file, exact deadlines, how filing works on EmaraTax, what it costs to get it wrong, and how to use Small Business Relief before it expires on 31 December 2026.
Who must file a corporate tax return in Dubai
Every juridical person incorporated in the UAE must file a corporate tax return annually. This includes:
- Mainland companies of every size, even with profits below AED 375,000 (taxed at 0%)
- Free zone companies, including those qualifying for the 0% rate as a Qualifying Free Zone Person (QFZP)
- Natural persons earning more than AED 1 million per year from business activity
- Foreign entities with a permanent establishment in the UAE
Filing is mandatory regardless of profit. A company that made a loss, broke even, or elected Small Business Relief must still submit a return on time. Free zone companies that miss their filing deadline risk losing their preferential 0% treatment.
Corporate tax filing deadlines for 2026
The rule under Federal Decree-Law No. 47 of 2022 is simple: your return must be filed and any tax paid within nine months of your financial year end. Filing and payment share the same deadline; there is no separate payment window.
Deadlines by financial year end:
- Year ended 30 September 2025: file by 30 June 2026 (passed)
- Year ended 31 December 2025: file by 30 September 2026
- Year ended 31 March 2026: file by 31 December 2026
Most Dubai companies follow the calendar year, so 30 September 2026 is the deadline that applies to the majority of businesses.
Time-sensitive: the AED 10,000 penalty waiver. If your first corporate tax period ended on 31 December 2025 and you were charged the AED 10,000 late registration penalty, filing your first return by 31 July 2026 qualifies you for a full waiver of that penalty. Returns filed after 31 July 2026 do not qualify. If you already paid the penalty, the FTA credits it back to your EmaraTax account automatically.
UAE corporate tax rates in 2026
The UAE applies a two-tier system:
- 0% on taxable income up to AED 375,000
- 9% on taxable income above AED 375,000
Qualifying Free Zone Persons can apply 0% on qualifying income, provided they meet the FTA's substance, de minimis, and other conditions. Non-qualifying income (such as revenue from mainland customers outside permitted activities) is taxed at 9%.
Small Business Relief: use it before 31 December 2026
Businesses with revenue of AED 3 million or less in the relevant tax period (and all prior periods) can elect Small Business Relief and treat their taxable income as zero. Two things business owners often miss:
- The election is made inside the tax return itself. It is not applied automatically. If you file without electing it, you lose it for that period.
- This is a transitional relief that ends for tax periods ending on or before 31 December 2026. For most businesses, the FY2025 and FY2026 returns are the last chances to use it.
Claiming the relief when revenue exceeds AED 3 million triggers penalties on reassessment, so confirm eligibility before electing.
How to file your corporate tax return on EmaraTax (step by step)
- Confirm registration. You need a Corporate Tax Registration Number before you can file. Log in to EmaraTax and check your status.
- Close and reconcile your books. The return draws directly from your financial statements. Bank reconciliations, revenue recognition, and expense categorisation must be complete.
- Prepare financial statements. Audited financial statements are required if revenue is AED 50 million or more, or if you are claiming QFZP status.
- Calculate taxable income. Start with accounting profit, then add back disallowable items such as fines, non-qualifying donations, and personal expenses, and apply any reliefs.
- Decide your regime before starting the return. Small Business Relief, QFZP, or standard. Some elections are irreversible once submitted.
- Complete and submit the return in EmaraTax, declaring income, deductions, and reliefs claimed.
- Pay any tax due by the same deadline. Bank transfers can take time to process, so pay several days early. A payment received after the deadline is late even if you initiated it before.
- Save your acknowledgment receipt and payment confirmation. Records must be kept for seven years.
For businesses that would rather hand this to a UAE-based team, our corporate tax services cover the entire process end to end.
Penalties for late filing and late payment
Under Cabinet Decision No. 129 of 2025 (effective 14 April 2026), corporate tax penalties now follow the same structure as VAT penalties:
- Late filing: AED 500 per month for the first 12 months, rising to AED 1,000 per month thereafter
- Late payment: annual interest of 14% (around 1% per month) on the unpaid amount
- Late registration: AED 10,000 (see the waiver above)
These penalties run in parallel. A business that registered late, filed late, and paid late accumulates all three at once. The FTA has also been running risk-based audits since early 2026 and cross-references corporate tax returns against VAT returns and financial statements, so mismatched figures can trigger a review.
Common filing mistakes to avoid
- Waiting until September. Preparation (bookkeeping, reconciliation, financial statements) is the slow part, not the EmaraTax form.
- Assuming free zone status means no filing. QFZPs must register and file annually.
- Not electing Small Business Relief inside the return when eligible.
- Claiming QFZP status without meeting the de minimis and substance conditions.
- Missing related party disclosures for transfer pricing.
- Forgetting that a nil return is still a mandatory return.
FAQ
What is the corporate tax filing deadline in Dubai for 2026?
Nine months after your financial year end. For companies with a year ending 31 December 2025, the deadline is 30 September 2026 for both filing and payment.
Do I need to file if my business made no profit?
Yes. Every taxable person must file, including businesses with losses, nil income, or profits below AED 375,000.
Do free zone companies in Dubai have to file corporate tax returns?
Yes. Free zone companies must register and file annually even if they qualify for the 0% rate as a Qualifying Free Zone Person.
Can I get an extension from the FTA?
Routine extensions are not granted. Exceptional extension requests must be submitted through EmaraTax before the original deadline with supporting evidence, and approval is not guaranteed.
What is Small Business Relief and when does it end?
Businesses with revenue of AED 3 million or less can elect to treat taxable income as zero. The relief applies to tax periods ending on or before 31 December 2026 and must be elected inside the return.
What documents do I need to file?
Financial statements for the period, trial balance and reconciliations, details of related party transactions, and your Corporate Tax Registration Number. Audited statements are required if revenue is AED 50 million or more or you are claiming QFZP status.
Get your FY2025 return filed before the rush
The businesses that file smoothly are the ones whose books are closed by mid-year. TaxBox handles corporate tax services for Dubai SMEs on fixed monthly pricing: bookkeeping, return preparation, Small Business Relief assessment, and EmaraTax submission, all handled by UAE-based chartered accountants. If your year ended 31 December 2025, the deadline is 30 September 2026 and the penalty waiver window closes 31 July 2026.
Founder & CEO of TaxBox. Fellow Chartered Accountant with deep experience in UAE corporate tax, VAT, and accounting for SMEs.
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