TITLE: UAE Tax Compliance Update: September 2026 Deadlines and Key Changes
September brings several important compliance dates for UAE companies, free zone businesses, digital businesses and international sellers.
The Federal Tax Authority (FTA) has reminded businesses with financial years ending on 31 December 2025 to file their Corporate Tax returns and pay any tax due by 30 September 2026. VAT documentation rules have also been clarified, new supplier verification requirements are approaching, and e-invoicing preparation is becoming more urgent.
This edition explains what you need to do now and how to structure your UAE business for compliant growth.
File your 2025 Corporate Tax return by 30 September
The FTA issued a public reminder on 2 September 2026. Taxable persons whose financial year ended on 31 December 2025 must submit their Corporate Tax return and settle any Corporate Tax due by 30 September 2026 through EmaraTax.
This deadline applies even if your business expects no tax liability.
You must:
- Confirm that your Corporate Tax registration is active.
- Reconcile your accounting records for the 2025 tax period.
- Prepare transaction, asset, liability and ownership records.
- Calculate taxable income under the Corporate Tax rules.
- Submit the return through EmaraTax.
- Pay any amount due before the deadline.
Eligible businesses using Small Business Relief must still register, file a simplified Corporate Tax return and retain supporting records. Small Business Relief does not remove the filing obligation.
The FTA states that eligibility depends on revenue not exceeding AED 3 million in the relevant tax period and all previous tax periods, subject to the applicable conditions. Keep evidence of revenue, transactions and ownership so you can support the election if requested.
Read the FTA Corporate Tax filing reminder before submitting.
Track the September VAT and Excise deadlines
The FTA’s current announcements show two further September deadlines:
- 15 September 2026: Excise Tax return filing deadline.
- 28 September 2026: VAT return filing deadline.
Review your filing calendar now. Waiting until the final week can create problems if sales platform reports, customs records, bank statements or supplier invoices do not reconcile.
For VAT, check:
- Taxable sales and exempt or zero-rated supplies.
- Imports and customs declarations.
- Output VAT and recoverable input VAT.
- Credit notes and refunds.
- Marketplace settlement reports.
- Currency conversion records.
- Transactions involving related parties or overseas customers.
The UAE standard VAT rate remains 5%. Mandatory VAT registration generally applies when taxable supplies and imports exceed AED 375,000. Voluntary registration is available from AED 187,500, subject to the relevant conditions.
Apply VATP045 correctly to pre-2026 concerned goods
The FTA issued VAT Public Clarification VATP045 on 26 August 2026. It addresses “concerned goods” imported on or before 31 December 2025.
The clarification is particularly relevant to importers, e-commerce businesses, distributors and cross-border supply chains.
For affected historic imports, review whether you have:
- Accounted for the required output VAT.
- Retained the overseas supplier invoice.
- Retained the UAE customs declaration.
- Issued a self-tax invoice where required.
- Preserved sufficient evidence to support input tax recovery.
From 1 January 2026, the self-invoicing requirement for these imports ended under the amended VAT rules. However, the transitional treatment for goods imported on or before 31 December 2025 still requires careful review.
Read the official VATP045 clarification and reconcile historic import records before finalising your VAT return.
Prepare for supplier verification from 1 October
FTA Decision No. 13 of 2026 introduces measures for verifying the validity and integrity of supplies before input VAT is deducted. The rules take effect on 1 October 2026.
This is a significant operational change for:
- E-commerce businesses.
- Marketplaces and distributors.
- Importers.
- Digital businesses buying substantial services.
- Companies with large or changing supplier networks.
- Businesses claiming input VAT across cross-border supply chains.
Do not treat supplier onboarding as a purely commercial exercise. Build a documented process that confirms the supplier’s legal identity, business activity, contact details and transaction records.
Your September preparation checklist should include:
- Create a supplier verification checklist.
- Review existing high-value suppliers.
- Match supplier details to invoices and contracts.
- Check that goods or services match the supplier’s licensed activity.
- Record payment evidence and delivery documentation.
- Flag unusual changes in address, management or transaction volume.
- Schedule periodic supplier re-verification.
The official FTA Decision No. 13 of 2026 should be reviewed before your October VAT processes begin.
Start e-invoicing preparation before the deadline arrives
The UAE e-invoicing voluntary and pilot phase has been live since 1 July 2026. Businesses should use this period to test systems rather than wait for mandatory implementation.
The current timeline is:
- Businesses with revenue of AED 50 million or more: appoint an Accredited Service Provider by 30 October 2026 and go live on 1 January 2027.
- Businesses below AED 50 million: appoint an Accredited Service Provider by 31 March 2027 and go live on 1 July 2027.
The Ministry of Finance has confirmed that the extension of the large-business appointment deadline does not change the 1 January 2027 go-live date.
Start by mapping:
- Your invoicing and accounting systems.
- Sales channels and marketplaces.
- Customer and supplier master data.
- Credit note and refund processes.
- Intercompany transactions.
- Cross-border invoices.
- Tax codes and reporting fields.
- Data retention and approval controls.
Use the Ministry of Finance’s Accredited Service Provider list to identify approved providers.
Build your free zone structure around qualifying activity
The UAE’s free zone regime can provide a 0% Corporate Tax rate on Qualifying Income for a Qualifying Free Zone Person (QFZP). However, a free zone licence alone does not guarantee eligibility for the 0% rate. The structure must be built around the specific qualifying activity definitions, and you must maintain adequate substance and arm’s length records to support the position. Review your activity descriptions, revenue streams and supporting documentation to ensure your free zone entity is positioned appropriately before the year-end compliance cycle begins.
