Deadline information checked on 24 October 2026. UAE Corporate Tax returns and any tax due are generally due within nine months after the end of the relevant Tax Period. For a period ending on 31 December 2025, the deadline was 30 September 2026 and has already passed. If that return or payment is outstanding, address it promptly. The deadline for a period ending on 31 December 2026 is generally 30 September 2027. Confirm your own Tax Period before applying either date.
Key Filing Requirements at a Glance
- Deadline: Generally nine months after the end of the relevant Tax Period, for both filing and payment.
- Calendar-year examples: Period ending 31 December 2025 → 30 September 2026; period ending 31 December 2026 → 30 September 2027.
- Applies to: Taxable Persons within the scope of UAE Corporate Tax, including relevant free zone entities. Certain Exempt Persons required to register submit an annual declaration instead.
- Registration required: Tax Registration Number (TRN) with Federal Tax Authority (FTA)
- Late filing penalty: AED 500 per month of delay for first 12 months, then AED 1,000/month
Understanding the Filing Timeline
Standard Filing Deadline
The general filing and payment deadline is nine months after the relevant Tax Period ends. The FTA’s September 2026 reminder specifically confirmed 30 September 2026 for periods ending on 31 December 2025, including taxpayers claiming Small Business Relief. This is not a universal date for every company. See also the FTA Corporate Tax General Guide.
Alternative Financial Year-Ends
Companies with different financial year-ends follow the same 9-month rule:
- Tax Period ending 31 May 2026 → General filing and payment deadline: 28 February 2027.
- Tax Period ending 31 March 2026 → General filing and payment deadline: 31 December 2026.
The Federal Tax Authority may approve requests to extend or shorten the financial year in specific circumstances.
Who Must File Corporate Tax Returns?
Mandatory Filers Include:
- UAE Mainland Companies – All entities registered in UAE mainland jurisdictions
- Free Zone Companies – Including both Qualified Free Zone Persons (QFZP) and non-qualified entities
- Individual Entrepreneurs — Natural persons whose business activities fall within UAE Corporate Tax, subject to the applicable turnover threshold and exclusions.
- Permanent Establishments – Of non-resident companies operating in the UAE
- Other Specified Entities – As defined by UAE tax law
Registration Prerequisite
All entities subject to corporate tax must register with the Federal Tax Authority (FTA) and obtain a Tax Registration Number (TRN). This unique identifier is essential for filing returns and managing tax obligations.
Corporate Tax Return Components
Core Information Required
Taxpayer Details:
- Legal status (individual/entity, resident/non-resident)
- Free zone qualification status
- Tax group membership
Financial Information:
- Revenue and expenditure details
- Pre-tax profit/loss calculations
- Accounting profit reconciliation
- Tax adjustments and corrections
Tax Calculation:
- Taxable income determination
- Applicable exemptions and deductions
- Final tax liability
Special Schedules and Attachments
Free Zone Companies (QFZP):
- Qualified vs. non-qualified income breakdown
- De minimis requirement compliance
- Economic substance documentation
Foreign Tax Credit Claims:
- Foreign-sourced income details
- Foreign tax payments
- Credit calculation methodology
Supporting Documentation
Prepare the financial statements and supporting records relevant to your return. Upload the attachments required by EmaraTax for your circumstances and retain the remaining evidence. An audit is not compulsory for every Corporate Tax filer.
- Financial statements and audit requirements: For Tax Periods starting on or after 1 January 2025, Ministerial Decision No. 84 of 2025 requires audited statements for non-Tax-Group Taxable Persons with Revenue exceeding AED 50 million and for Qualifying Free Zone Persons. Tax Groups must prepare audited special-purpose financial statements. Other legal or licensing rules may also require an audit.
- Supporting documentation for claimed deductions
- Evidence of exemption eligibility where applicable
UAE Corporate Tax Rates and Thresholds
Current Tax Structure
The UAE corporate tax system features a progressive structure:
| Taxable Income Range | Tax Rate |
| Up to AED 375,000 (~USD 102,000) | 0% |
| Above AED 375,000 | 9% |
Available Relief Measures
Small Business Relief: Eligibility and Filing
- Small Business Relief eligibility includes a Revenue limit of AED 3 million or less in the current and all previous Tax Periods, subject to the scheme’s other conditions and applicable Tax Periods.
- Eligible Resident Persons must elect for relief for each relevant Tax Period. Qualifying Free Zone Persons and certain large multinational-group members cannot elect for it.
- Important: Claiming Small Business Relief does not remove the obligation to file a Corporate Tax return.
Free Zone Benefits:
- Qualified Free Zone Persons (QFZP) may qualify for 0% tax rate
- Must meet specific qualifying conditions and substance requirements
Penalties for Non-Compliance
Understanding the penalty structure is crucial for compliance:
| Violation Type | Penalty Amount |
| Late filing | AED 500 for each month or part-month in the first 12 months; AED 1,000 per month or part-month from month 13 |
| Incorrect return submission | Generally AED 500 unless corrected before the filing deadline; voluntary-disclosure or tax-difference penalties may also apply |
| Late tax payment | 14% per annum on unpaid Corporate Tax, charged monthly for each month or part-month after the payment due date |
Filing and payment penalties are separate. The table summarises selected provisions of Cabinet Decision No. 75 of 2023, as amended; other penalties, exceptions and relief conditions may apply.
Step-by-Step Filing Process
1. Pre-Filing Preparation
Verify Tax Registration:
- Confirm valid TRN for corporate tax purposes
- Update registration details if necessary
Document Preparation:
- Prepare financial statements and arrange an audit where required for your Tax Period and circumstances.
- Compile supporting documentation
- Calculate preliminary tax position
2. Online Filing
Access Requirements:
- Valid FTA portal account
- UAEPass access and the appropriate EmaraTax authorisation for the person submitting the return.
- Authorized signatory access
Filing Process:
- Complete online tax return form
- Upload required attachments
- Review and submit before deadline
3. Post-Filing Obligations
- Maintain records for statutory period
- Respond to any FTA queries
- Process payment if tax is due
Why Professional Assistance Matters
Complex Calculation Requirements
Corporate tax computation involves intricate adjustments to accounting profit, requiring deep understanding of:
- Permissible deductions and restrictions
- Timing differences and provisions
- Free zone qualification criteria
- International tax implications
Common Filing Challenges
- Transfer pricing considerations for related party transactions
- Substance requirements for free zone entities
- Loss utilization and carry-forward rules
- Foreign tax credit optimization
Risk Mitigation
Professional tax advisors help companies:
- Maximize legitimate tax benefits
- Ensure accurate compliance
- Minimize audit risk
- Navigate complex regulations
How Helvetios.eu Can Support Your Compliance
At Helvetios.eu, we understand the complexities of UAE corporate tax compliance. Our experienced team provides comprehensive support for:
Corporate Tax Services
- Tax return preparation and filing
- Tax planning and optimization strategies
- Compliance review and risk assessment
- Representation before tax authorities
Specialized Expertise
- Free zone qualification analysis
- Cross-border tax structuring
- Transfer pricing documentation
- Tax-efficient corporate restructuring
Why Choose Helvetios.eu?
- Deep UAE tax expertise with international perspective
- Proven track record in complex tax matters
- Personalized service tailored to your business needs
- Comprehensive support from planning to compliance
Take Action Now
Confirm the end of your Tax Period and record both the filing and payment deadlines. If your period ended on 31 December 2025 and you have not completed the obligations due on 30 September 2026, take action now rather than waiting for the next annual cycle. If your next deadline is still ahead, prepare the accounts, supporting records and any required audit early.
Contact Helvetios.eu today to ensure your corporate tax compliance is handled professionally and efficiently. Our team is ready to guide you through every aspect of the filing process while identifying opportunities to optimize your tax position.
The UAE corporate tax landscape continues to evolve. This article provides general guidance based on current regulations. For specific advice tailored to your situation, consult with qualified tax professionals.
