UAE Corporate Tax in 2026: What Every Business Owner Should Know

Since financial years beginning on 1 January 2025, the UAE has implemented the Domestic Minimum Top-up Tax (DMTT) under Cabinet Decision No. 142 of 2024. The DMTT applies only to multinational enterprise (MNE) groups with consolidated annual global revenue exceeding €750 million. In August 2026, the OECD recognized the UAE's DMTT as a Qualified Domestic Minimum Top-up Tax under the Pillar Two framework, reducing the risk of the same profits being taxed in multiple jurisdictions. Most SMEs will not fall within the scope of these rules. However, businesses that are subsidiaries, branches, or part of larger multinational groups should confirm whether the group is subject to the DMTT, as Free Zone incentives alone may not determine the group's overall tax position.

From 14 April 2026, Cabinet Decision No. 129 of 2025 introduced a unified penalty framework across Corporate Tax, VAT, and Excise Tax. The updated regime includes:

• Late payment interest at 14% per annum

• A fixed AED 10,000 penalty for late Corporate Tax registration

The Federal Tax Authority will waive the late registration penalty if the business files its first Corporate Tax return within seven months of the end of its first tax period. Businesses that have already paid the penalty may also be eligible for a refund if they meet the prescribed conditions.

Under Federal Decree-Law No. 17 of 2025, businesses now have five years to claim tax refunds or use tax credit balances across Corporate Tax, VAT, and Excise Tax. Any unclaimed credits or overpayments that fall outside this period may no longer be recoverable. For older balances relating to 2021, transitional provisions provide a one-year window beginning in January 2026 to submit claims before those amounts expire. Businesses should review outstanding tax credits rather than allowing them to lapse.

Businesses with annual revenue of AED 3 million or less can continue to claim Small Business Relief only for tax periods ending on or before 31 December 2026.

Businesses currently relying on this relief should begin preparing for the period after the concession expires.

For businesses following the calendar year, the 2025 Corporate Tax return and payment are due by 30 September 2026. Your filing obligations are determined by your financial year and registration, so businesses should verify their own deadlines rather than relying on general filing dates.

Review VAT and Corporate Tax credit balances to ensure refunds or credits are claimed before the new five-year limitation period expires.

Businesses with related-party transactions should ensure their transfer pricing documentation is complete and up to date, as regulatory scrutiny continues to increase.

If your company forms part of a multinational group, determine whether the parent group falls within the OECD Pillar Two framework and whether the UAE's Domestic Minimum Top-up Tax has any impact on your reporting obligations.

Whether your Corporate Tax rate is 0% or 9%, businesses must continue to:

• Register for Corporate Tax

• File returns within the prescribed deadlines

• Maintain accounting records

• Retain supporting documentation

Corporate Tax compliance is no longer just about calculating tax. Businesses must register on time, maintain proper records, meet filing deadlines, monitor tax credits, and keep pace with evolving regulations.

Kitaab helps UAE businesses manage Corporate Tax compliance from end to end. Our team supports businesses with:

• Corporate Tax registration

• Corporate Tax return preparation and filing

• Tax record maintenance and compliance reviews

• Transfer pricing documentation support

• Corporate Tax advisory for Free Zone and mainland businesses

• Ongoing compliance to help reduce the risk of penalties

Whether you're filing your first return or managing annual compliance, Kitaab helps ensure your business remains

aligned with the UAE Corporate Tax framework while allowing you to focus on growth.

The Corporate Tax rates remain unchanged at 0% on taxable income up to AED 375,000 and 9% on taxable income above AED 375,000. The major changes in 2026 relate to enforcement, penalties, tax credit deadlines, and compliance requirements.

For businesses following the calendar year, the Corporate Tax return and any tax due for the 2025 financial year must be submitted by 30 September 2026.

Yes. A 0% Corporate Tax rate does not remove compliance obligations. Eligible businesses must still register, maintain accounting records, and submit Corporate Tax returns within the prescribed deadlines.

The standard penalty is AED 10,000. However, the Federal Tax Authority may waive or refund the penalty if the business files its first Corporate Tax return within the required timeframe and meets the applicable conditions.

Businesses now have five years to claim eligible tax refunds or utilize tax credit balances. Credits that remain unclaimed beyond this period may expire, making periodic reviews of tax accounts essential.

In most cases, no. The Domestic Minimum Top-up Tax (DMTT) applies only to multinational enterprise groups with consolidated global revenue exceeding €750 million. Most SMEs are outside its scope.

Yes, but only for eligible tax periods ending on or before 31 December 2026. Businesses currently relying on the relief should prepare for the transition once it expires.

Kitaab provides end-to-end Corporate Tax services, including registration, return filing, compliance reviews, tax advisory, transfer pricing support, and ongoing compliance management to help businesses meet their obligations and reduce the risk of penalties.