On June 1, 2026, the UAE Ministry of Finance published Version 1.1 of the Electronic Invoicing Guidelines. This is not a cosmetic revision — it introduces two new appendices that directly affect day-to-day invoicing and document archiving processes for every business operating in the UAE.
The update signals that the UAE e-invoicing system is taking concrete operational shape. The pilot launches on July 1, 2026 — less than a month from the publication of these guidelines. Businesses that have been treating UAE e-invoicing as a future concern must recognize that implementation is now imminent.
What's New in Version 1.1
Appendix 5: Advance Payments and Retention Invoicing
The most significant addition is Appendix 5, which addresses two scenarios that have generated the most practical questions from businesses:
Advance Payments: When a customer pays before delivery of goods or services, businesses must issue an advance payment invoice. Version 1.1 clarifies how to technically link this advance invoice to the final invoice within the Peppol PINT-AE model.
The final invoice can reference the advance payment invoice through the appropriate data fields (IBT-25/IBT-26 or a description in IBT-022). Importantly, the cbc:PrepaidAmount field may be left empty in such a scenario, provided the reference to the advance invoice is clearly identified.
Retention Amounts: In construction and long-term service contracts, buyers often withhold a percentage of payment until final acceptance of works or services. Version 1.1 identifies two permissible approaches for handling retention within the e-invoicing framework:
- Issue a credit note for the retention amount when it is released
- Include the retention as a separate line item on the final invoice
The guidance provides specific field mappings for both approaches, ensuring compliance while maintaining flexibility for different contract structures.
VAT Group Grace Period Clarification
Version 1.1 expands the section on VAT groups. Transactions between members of the same VAT group benefit from a 24-month grace period commencing January 1, 2027.
The Ministry is explicit: this is a deferral of the obligation, not an exemption from the e-invoicing system. Businesses within VAT groups should begin implementation planning now, bearing in mind that the grace period will expire faster than expected.
Enhanced Archiving Requirements
The updated guidelines strengthen data retention requirements. Invoices must be retained for 5-7 years with strict accessibility requirements. For businesses operating global cloud infrastructure, Version 1.1 clarifies that:
- Servers located outside the UAE must guarantee FTA access on demand
- Data integrity must be maintained throughout the retention period
- ASP agreements must explicitly address these archiving requirements
This has direct implications for ASP selection — businesses must verify that their chosen provider can meet these accessibility and integrity guarantees.
Timeline Reminders
Version 1.1 reinforces the phased rollout timeline:
- July 1, 2026: Pilot phase launches (voluntary participation)
- January 1, 2027: Mandatory for businesses with revenue ≥ AED 50 million
- July 1, 2027: Mandatory for all remaining businesses
- October 1, 2027: Full implementation including government entities
What Businesses Should Do Now
1. Review ASP Agreements
Review your ASP agreement for compliance with the archiving requirements introduced in Version 1.1 — particularly regarding FTA access guarantees and data integrity when servers are located outside the UAE.
2. Update Advance Payment Processes
Verify that your current ERP configuration correctly handles the Peppol PINT-AE reference fields required to link advance and final invoices. Test this process during the voluntary pilot phase.
3. Assess Retention Invoicing
If your business uses retention in contracts, determine which of the two permissible approaches (credit note or line item) aligns with your current processes and update your workflows accordingly.
4. Plan for VAT Group Compliance
If your business is part of a VAT group, use the 24-month grace period strategically — but begin implementation planning now. The grace period expires faster than it appears.
5. Participate in the Pilot
The voluntary pilot phase beginning July 1, 2026 is an opportunity to test your systems, train your team, and identify operational gaps before mandatory implementation. Use this time wisely.
The Bottom Line
Version 1.1 of the UAE Electronic Invoicing Guidelines is an operational document, not a declarative one. It answers the specific questions that arise in practice — how to store invoices when operating a global cloud infrastructure, how to correctly invoice advance payments within the Peppol model, and how to handle retention.
The pilot begins in weeks. Mandatory implementation begins in months. The time for planning is now.
Start free with 50 invoices — test your e-invoicing setup during the voluntary pilot phase, no card required.