Corporate Tax Filing Guide UAE: Deadlines and Penalties

This corporate tax filing guide covers everything UAE businesses need to know before submitting their annual return — deadlines, required documentation, penalty exposure, and common mistakes that lead to FTA adjustments. Corporate tax is no longer an administrative formality. With penalties now applying to late filing, late payment, incorrect returns, and insufficient records

Who Must File a Corporate Tax Return in the UAE?

Every business registered for corporate tax in the UAE must file an annual return, including those that qualify for exemptions or the 0% rate. Registration and filing are mandatory regardless of whether tax is ultimately payable Only registered tax agents authorized by the FTA can legally submit returns and represent businesses in corporate tax matters general accountants do not hold this authority.

Corporate tax applies at 9% on taxable income above AED 375,000. Income below this threshold is subject to 0%. Free zone entities may qualify for the 0% Qualifying Free Zone Person rate on qualifying income, subject to strict substance and documentation requirements.

Corporate Tax Filing Deadlines: FY 2025 and FY 2026

Returns must be filed within nine months from the end of the financial year. This corporate tax filing guide table covers the most critical upcoming and recently passed deadlines:

Businesses with non-calendar financial year-ends frequently miss their deadlines because they miscalculate the nine-month window. The table above removes that ambiguity.

Documents Required for Corporate Tax Filing

Incomplete documentation is one of the most common reasons for penalties and FTA adjustments. Every item below must be prepared and retained before the return is filed.

Financial statements and accounting records

• IFRS-compliant financial statements covering the full tax period
• Ledgers, trial balances, and reconciliations that directly support the figures in the return
• Schedules for provisions, accruals, and allocations — not just the final statements

Tax adjustments and supporting schedules

• Non-deductible expenses with clear categorization
• Exempt income analysis and unrealized gains or losses treatment
• Entertainment and interest deductibility calculations
• Arm’s length pricing evidence for all related-party transactions

Transfer pricing documentation

• Businesses with intercompany transactions must prepare a Transfer Pricing Disclosure Form
• Where thresholds are met, a Master File and Local File are also required
• Transfer pricing benchmarking must demonstrate that related-party pricing matches market rates FTA challenges in this area result in income adjustments and penalties on the corrected difference

Free zone qualifying income evidence

• Substance and staffing documentation confirming activities are performed in the UAE
• Evidence of Core Income-Generating Activities (CIGAs) within the free zone
• Clear segregation between qualifying and non-qualifying income streams

Corporate Tax Penalties: What This Filing Guide Covers

The penalty framework was updated under Cabinet Decision No. 129 of 2025, effective April 2026. The across corporate tax VAT creates a unified, stricter enforcement model that businesses must plan against.

Late filing penalty: A fixed penalty applies for every return filed after the nine-month deadline, regardless of whether tax is owed.

Late payment penalty: 14% per annum applied monthly on any unpaid corporate tax balance after the due date.

Incorrect return penalties: Fixed and recurring penalties apply where taxable income is understated or incorrect information is submitted.

Record-keeping violations: AED 1,000 per violation, rising to AED 20,000 for repeated violations within 24 months — each missing document during an FTA review is a separate violation.

Voluntary disclosure penalties: Where errors are not corrected proactively, 1% per month applies on the tax difference from the filing due date.

Three Case Studies That Show Where Businesses Go Wrong

• Filing without proper working papers: A consulting firm submits its return based on final financial statements but cannot produce schedules for provisions, allocations, or accruals during an FTA review. Several deductions are disallowed, increasing taxable income and triggering penalties.
• Missing a filing deadline: A business with a 31 March financial year-end delays its audit and tax computations. By the time working papers are ready, the December deadline has passed. The business faces both late filing and late payment penalties simultaneously.
• Incorrect related-party pricing: A free zone business prices transactions with related entities below market rates without benchmarking. The FTA challenges the pricing, adjusts taxable income upward, and imposes penalties for the incorrect filing position.

How IAS Supports Corporate Tax Filing?

IAS is an FTA-registered tax agency (TAAN 30004089) providing complete corporate tax  Dubai, including:

• Full corporate tax computation and return filing within statutory deadlines
• IFRS-compliant financial statement preparation and reconciliation
• Corporate tax health checks to identify documentation gaps before filing
• Transfer pricing disclosure forms, benchmarking studies, and Master and Local File preparation
• Free zone qualifying income analysis and QFZP substance documentation
• Voluntary disclosure planning and penalty reconsideration submissions

Contact our team to review your filing position, confirm your deadline, and prepare a complete, accurate corporate tax return before the FTA comes to you.