UAE Corporate Tax Deadline 30 September 2026: Filing, Audit Requirements and Late Penalties

Businesses with a financial year ending on 31 December 2025 must file their UAE Corporate Tax return and pay any Corporate Tax due by 30 September 2026.

The Federal Tax Authority (FTA) applies a nine-month deadline from the end of the relevant Tax Period. The FTA has specifically confirmed that a Taxable Person whose financial year ends on 31 December 2025 must file and pay on or before 30 September 2026.

UAE Corporate Tax Filing Deadlines by Financial Year

The standard nine-month rule produces the following deadlines:

Businesses should confirm the Tax Period registered with the FTA rather than relying only on an assumed calendar-year accounting period. The Corporate Tax deadline is generally calculated from the end of the Tax Period not from the Corporate Tax registration date, TRN issue date or trade-license renewal date.

UAE Corporate Tax Deadline 2026: Key Facts

The filing deadline and payment deadline normally fall on the same date, but filing the return and paying the tax are separate obligations.

How Do I Calculate My UAE Corporate Tax Due Date?

Take the final date of the relevant Tax Period and apply the general nine-month filing period.

Financial year ends 31 December 2025 → Corporate Tax deadline 30 September 2026.

The Corporate Tax Law treats a Taxable Person’s Financial Year as the Gregorian calendar year or the 12-month period for which it prepares financial statements. In certain first-year cases, the Tax Period can also be shorter or longer than 12 months.

Who Must File a UAE Corporate Tax Return?

Taxable Persons generally must file a Corporate Tax return for each relevant Tax Period.

That can include:

• UAE mainland companies;
• Free Zone Persons;
• Qualifying Free Zone Persons;
• Tax Groups, through the Parent Company;
• Non-Resident Persons that fall within the Corporate Tax rules; and
• Natural Persons conducting Business or Business Activities where the applicable Corporate Tax threshold is exceeded.

Exempt Persons required to register generally submit an Annual Declaration rather than an ordinary Corporate Tax return, also within nine months from the end of the relevant Financial Year.

Do UAE branches file separate Corporate Tax returns?

A UAE branch of a domestic juridical person is not generally required to register or file separately from its head office.

The FTA treats such branches as extensions of the domestic parent rather than separate juridical persons.

That distinction is useful for businesses operating multiple UAE branches under one legal entity.

What Is the UAE Corporate Tax Filing Deadline for 2026?

For a UAE business whose financial year ended on 31 December 2025, the Corporate Tax filing deadline is 30 September 2026.

Article 53 of the UAE Corporate Tax Law requires a Taxable Person to file its Corporate Tax return no later than nine months from the end of the relevant Tax Period, unless another date is specified by the Authority.

Corporate Tax payable is also generally required to be settled within nine months from the end of the relevant Tax Period.

This creates an important distinction:

The Corporate Tax deadline is calculated from the end of the Tax Period. It is not calculated from the trade licence renewal date, Corporate Tax registration date or the date the TRN was issued.

For most companies using a January to December financial year:

31 December 2025 financial year-end + nine months = 30 September 2026 deadline.

Businesses should not assume that 30 September applies automatically to every UAE company. A different financial year produces a different filing date.

Who Has a 30 September 2026 Corporate Tax Deadline?

30 September 2026 applies to a Taxable Person whose relevant Tax Period ends on 31 December 2025. A business using another financial year will have another Corporate Tax filing deadline under the general nine-month rule.

Your Corporate Tax registration date or trade licence issue or renewal date does not normally determine the return deadline. Two companies that registered for Corporate Tax on different dates can still have the same 30 September 2026 filing deadline if both Tax Periods ended on 31 December 2025.

This is particularly relevant for non-calendar financial years, subsidiaries following a parent company’s reporting year, Free Zone companies, newly established entities, businesses that changed their financial year and Tax Groups.

If the FTA has approved a change to a company’s Tax Period, the filing deadline follows the approved Tax Period end, not the previous financial year-end.

Companies in an approved UAE Tax Group do not each file a separate return. The Parent Company files one Corporate Tax return for the Tax Group within nine months of the relevant Tax Period.

The first step is therefore to confirm the company’s actual Tax Period.

Small Business Relief: Important 2026 Update

Small Business Relief has been extended to eligible Tax Periods ending on or before 31 December 2029.

On 7 August 2026, the Ministry of Finance announced Ministerial Decision No. 131 extending the relief beyond its previous end date. The AED 3 million Revenue threshold remains unchanged, subject to the eligibility conditions.

The AED 3 million Small Business Relief threshold is based on Revenue, not profit or Taxable Income.

Relief is also not automatic. An eligible business must elect for Small Business Relief for each Tax Period when filing its Corporate Tax return. A business with Revenue below AED 3 million in the current period may still be ineligible if it exceeded the threshold in a previous Tax Period.

Does Small Business Relief remove the filing requirement?

No. Small Business Relief can reduce Corporate Tax compliance, but it does not remove the requirement to file a Corporate Tax return.

The FTA requires eligible businesses claiming the relief to submit a simplified Corporate Tax return within the applicable filing deadline.

Can a Qualifying Free Zone Person claim Small Business Relief?

No. A Qualifying Free Zone Person cannot elect for Small Business Relief, even if its Revenue is AED 3 million or less.

However, not every Free Zone company is excluded from Small Business Relief. A Free Zone Person that is not a Qualifying Free Zone Person may be eligible if it is a Resident Person and meets the Revenue and other conditions.

Do Free Zone Companies Have to File Corporate Tax Returns?

Yes. Free Zone companies must generally register for Corporate Tax and file a Corporate Tax return whether or not they qualify for the 0% Free Zone Corporate Tax regime.

A Qualifying Free Zone Person may benefit from 0% Corporate Tax on Qualifying Income, but it remains a Taxable Person with Corporate Tax compliance obligations.

0% Corporate Tax on Qualifying Income does not mean no Corporate Tax return.

The Corporate Tax return includes specific sections for Qualifying Free Zone Persons, including information used to confirm eligibility for the Free Zone regime and determine Qualifying Income.

What Documents Are Required for UAE Corporate Tax Filing?

Financial statements are generally a mandatory attachment to the Corporate Tax return unless the Taxable Person has elected for Small Business Relief.

This is one of the most useful practical points in the FTA’s Corporate Tax Return Guide.

The FTA’s additional-attachments schedule states that financial statements are mandatory for Taxable Persons, except where a Small Business Relief election has been made. Other supporting documents may become relevant depending on the taxpayer’s circumstances and claims made in the return.

Businesses should normally have the following ready before filing:

• final financial statements;
• accounting records and trial balance;
• Revenue and expense reconciliations;
• asset and liability records;
• details of tax adjustments;
• related-party and Connected Person transaction information;
• relief and election calculations;
• Tax Loss schedules where relevant;
• Free Zone income analysis where relevant;
• foreign tax evidence where a Foreign Tax Credit is claimed; and
• audited financial statements where audit is mandatory.

The FTA also requires records supporting the information reported in the return to be retained.

Do Related-Party Transactions Affect the Corporate Tax Return?

Yes. Certain high-value Related Party and Connected Person transactions trigger additional disclosure schedules in the Corporate Tax return.

The Related Party schedule generally applies where the aggregate value of transactions with Related Parties exceeds AED 40 million. Once this threshold is exceeded, transaction categories exceeding AED 4 million must be disclosed.

However, AED 40 million is a Corporate Tax return disclosure threshold, not an exemption from UAE transfer pricing rules. Related Party transactions below AED 40 million can still be subject to the arm’s length principle and other transfer pricing requirements. Dividends declared between Related Parties are also excluded when calculating the AED 40 million and AED 4 million disclosure thresholds.

For Connected Persons, a separate threshold applies. The relevant schedule is triggered where aggregate transactions with Connected Persons exceed AED 500,000 under the applicable FTA rules. The AED 500,000 Connected Person threshold is separate from the AED 40 million Related Party threshold.

This is why Corporate Tax filing should begin with reconciled accounting records and a review of Related Party and Connected Person transactions rather than waiting until the return is opened in EmaraTax.

How Long Must Corporate Tax Records Be Kept?

Corporate Tax records and supporting documents generally need to be retained for at least seven years after the end of the relevant Tax Period.

The seven-year period runs from the end of the Tax Period to which the records relate, not simply from the date a document was created.

Businesses should retain sufficient documentation to support the amounts reported in the Corporate Tax return, including records relating to transactions, assets, liabilities and shareholdings.

Failure to maintain the required records can result in an administrative penalty of AED 10,000 for each violation, increasing to AED 20,000 for a repeated violation within 24 months.

What Is the UAE Corporate Tax Late-Filing Penalty?

A late Corporate Tax return attracts AED 500 for each month or part of a month during the first 12 months of delay. From the thirteenth month onwards, the penalty increases to AED 1,000 for each month or part of a month.

The penalty begins after the return-filing deadline expires. Even part of a month can count as a month for penalty purposes.

A business can also face a late-filing penalty even where its Corporate Tax return shows no Corporate Tax payable, because the filing obligation and the tax payment obligation are separate.

What Is the Penalty for Paying Corporate Tax Late?

Unpaid Corporate Tax is subject to a monthly penalty calculated at a rate equivalent to 14% per annum on the unsettled Payable Tax.

The 14% figure is an annual rate applied monthly – it does not mean a 14% penalty is charged every month.

The late-payment penalty applies from the day following the payment due date and is separate from the penalty for submitting a Corporate Tax return late.

This means filing the return late and paying Corporate Tax late are two separate violations, and both penalties can apply to the same Tax Period.

What Other Corporate Tax Penalties Can Apply?

In addition to late-filing and late-payment penalties, businesses may face an AED 10,000 late-registration penalty. An incorrect Corporate Tax return can attract an AED 500 penalty in the circumstances prescribed by the Corporate Tax penalty rules, while failure to keep required records can result in AED 10,000 per violation and AED 20,000 for a repeated violation within 24 months.

These penalties form part of the UAE Corporate Tax administrative penalty framework under Cabinet Decision No. 75 of 2023 and its amendments.

Can the AED 10,000 Late-Registration Penalty Be Waived?

Yes. Eligible persons may benefit from the FTA’s Corporate Tax Late Registration Penalty Waiver Initiative.

For a Taxable Person, an important condition is that the first Corporate Tax return must be submitted within seven months from the end of the first Tax Period. Where the AED 10,000 late-registration penalty has already been paid, the amount may be credited back to the Corporate Tax account when the applicable waiver conditions are satisfied.

The seven-month period can easily be confused with the standard return deadline, but they serve different purposes.

The seven-month rule applies to the late-registration penalty waiver, not to Corporate Tax returns generally. The normal Corporate Tax filing deadline remains generally nine months from the end of the relevant Tax Period.

Where Is the UAE Corporate Tax Return Filed?

The UAE Corporate Tax return is filed electronically through the FTA’s EmaraTax platform.

Corporate Tax registration, return filing and payment are available through EmaraTax, but they are separate Corporate Tax compliance actions. Completing Corporate Tax registration does not mean the return has been filed, and filing the return does not by itself mean any Corporate Tax payable has been settled.

Before submission, the business should confirm that the correct Taxable Person and Tax Period are selected, registration details are current, financial statements are final, applicable disclosure schedules have been completed and any Corporate Tax payable can be settled before the deadline.

What Should Be Completed Before the Corporate Tax Filing Deadline?

Businesses should not wait until the Corporate Tax return is opened in EmaraTax to start preparing. Before the deadline, the relevant Tax Period should be confirmed, accounting records reconciled, financial statements completed and any Corporate Tax adjustments, reliefs, exemptions and Related Party disclosures reviewed.

Financial statements and audited financial statements are not the same requirement. Not every UAE business needs an audit simply because it has to file a Corporate Tax return.

For Tax Periods beginning on or after 1 January 2025, a Taxable Person with Revenue exceeding AED 50 million must prepare and maintain audited financial statements. A Qualifying Free Zone Person must have audited financial statements regardless of its Revenue, while Tax Groups are subject to separate audited special-purpose financial statement requirements.

This makes the pre-filing review particularly important for businesses relying on Qualifying Free Zone Person status, companies approaching the AED 50 million Revenue threshold and groups filing on a consolidated Tax Group basis.

How to File a Corporate Tax Return in the UAE?

A UAE Corporate Tax return is filed electronically through the FTA’s EmaraTax platform. The return is not the same for every business – EmaraTax changes the questions and schedules shown according to the Taxable Person’s registered information and answers entered during filing. The FTA specifically confirms that taxpayers may not see every field contained in its Corporate Tax Return Guide.

1. Log in to EmaraTax and Select the Taxable Person

Access the FTA’s EmaraTax platform and select the business for which the Corporate Tax return is being filed. The FTA’s current 2026 website states that FTA services are available through UAE PASS.

A Corporate Tax return may also be filed on behalf of a Taxable Person by an authorised Tax Agent or Legal Representative.

2. Check the Pre-Populated Corporate Tax Details

Before entering financial figures, check the information already shown in the return. EmaraTax pre-populates details including the Corporate Tax TRN, Tax Period, business information and type of Taxable Person from the company’s Corporate Tax registration.

This matters because the registered information determines which parts of the Corporate Tax return appear.

If a Corporate Tax field you expect to see is missing, the issue may be the information registered in EmaraTax rather than the return itself. The FTA specifically advises taxpayers to check their registered Taxable Person details when an expected field does not appear.

3. Finalise the Financial Figures and Calculate Taxable Income

Reconcile the accounting records and prepare the financial information for the relevant Tax Period. Accounting Income is then adjusted for applicable exemptions, reliefs, Tax Losses, non-deductible expenses and other Corporate Tax adjustments to determine Taxable Income.

Corporate Tax is not calculated simply by applying 9% to the company’s accounting profit. Accounting profit is the starting point, after which the adjustments required by the Corporate Tax Law are applied.

4. Complete Only the Corporate Tax Schedules That Apply

EmaraTax may open additional schedules for matters such as Free Zone status, Related Parties, Connected Persons, Tax Losses, Small Business Relief, interest deductions or other elections and reliefs.

There is no single identical Corporate Tax return form for every UAE company. The information entered at the beginning of the return determines which additional questions and schedules EmaraTax displays.

Documents are also not automatically the same for every filer. The FTA states that upload requirements depend on factors such as the category of Taxable Person and the reliefs claimed.

5. Review and Submit the Corporate Tax Return

Review the Tax Period, financial information, Corporate Tax adjustments and applicable schedules before making the declaration and submitting the return electronically.

If pre-populated registration information is incorrect, it should be updated in EmaraTax. An account-detail amendment awaiting FTA approval does not necessarily prevent the Taxable Person from continuing and submitting the Corporate Tax return.

6. Pay Any Corporate Tax Due

If the return shows Corporate Tax payable, the amount must also be settled within the applicable deadline.

Submitting the Corporate Tax return does not automatically pay the Corporate Tax liability. Filing and payment are separate compliance requirements, even though both are handled digitally through EmaraTax.

Missed the Corporate Tax Deadline? What Should You Do?

If a UAE Corporate Tax filing deadline has passed, the return can still be submitted through EmaraTax. The business should file as soon as possible because waiting for another monthly penalty date can increase the late-filing penalty even if the additional delay is only part of a month.

The business should:

1. Confirm the overdue Tax Period and filing deadline.
2. Finalise the accounting records and financial statements.
3. Complete the Corporate Tax calculation and required disclosures.
4. Submit the overdue Corporate Tax return through EmaraTax.
5. Pay any outstanding Corporate Tax and review penalties in the tax account.
6. Check whether any other Tax Periods or compliance requirements are outstanding.

Paying the Corporate Tax does not remove the requirement to file the overdue return, and filing the return does not remove late-payment penalties on unpaid tax.

A missed deadline can also indicate incomplete accounting records or delayed financial reporting, so the underlying issue should be corrected before the next Corporate Tax filing period.

Prepare for the 30 September 2026 Corporate Tax Deadline

If your business’s Tax Period ended on 31 December 2025, 30 September 2026 is generally the deadline to file the Corporate Tax return and pay any Corporate Tax due.

For businesses that require audited financial statements, preparation needs to begin well before the filing date. 30 September 2026 is the Corporate Tax deadline, not the deadline to start or complete the audit.

Before the return can be finalised, the accounting records should be closed, financial statements prepared, audit requirements confirmed, Corporate Tax adjustments reviewed and any outstanding accounting issues resolved. Free Zone businesses should also confirm whether they meet the conditions for Qualifying Free Zone Person status.

Not every Corporate Tax filer requires audited financial statements. For Tax Periods beginning on or after 1 January 2025, a Taxable Person with Revenue above AED 50 million and a Qualifying Free Zone Person regardless of Revenue must prepare and maintain audited financial statements.

Athos Auditors assists UAE businesses with financial statement audits, Free Zone audit requirements and Corporate Tax readiness, helping identify outstanding work before the Corporate Tax filing deadline.

Prepare Your Financial Statements Before the Corporate Tax Deadline

Athos Auditors assists UAE businesses with financial statement audits, Free Zone audit requirements and Corporate Tax readiness, helping identify outstanding work before the Corporate Tax filing deadline.

If your business requires an audit for a UAE Free Zone, you can also review our DMCC audit services, DAFZA audit services, RAKEZ audit services, HFZA audit services or JAFZA audit services.