The UAE Ministry of Finance (MoF) issued Version 1.1 of its Electronic Invoicing Guidelines on 1 June 2026. This marks the first substantive update to the technical rulebook since the framework launched in 2025. The update comes just weeks before the national e-invoicing system opened its voluntary pilot phase on 1 July 2026.
Version 1.1 keeps the core framework unchanged. It does not modify the implementation timeline, transaction scope, Peppol five-corner exchange model, PINT AE technical specification, or the requirement to use an Accredited Service Provider (ASP). Businesses that have started implementation planning can therefore continue with their existing scoping assessments and high-level roadmaps. Instead, the update provides practical guidance through two new appendices. These cover record storage and the treatment of advance payments and retention billing, addressing key questions raised by businesses in construction, real estate, retail, and services.
Read official Update from here Ministry of Finance UAE – Electronic Invoicing Guidelines Version 1.1, 1 June 2026 Document
Appendix 4: Clarifying Storage Obligations
The first substantive addition, Appendix 4, expands on the record-keeping obligations under Article 11 of Ministerial Decision No. 243 of 2025. Businesses subject to the e-invoicing mandate remain legally responsible for retaining electronic invoices, credit notes, and related tax data for the statutory retention period. They must also provide these records to the Federal Tax Authority (FTA) when requested. This responsibility remains with the business even when an Accredited Service Provider (ASP) or another third party manages the storage function.
This clarification matters for businesses considering fully outsourced e-invoicing solutions. Outsourcing data storage does not transfer legal responsibility to the service provider. If an ASP cannot provide complete and accessible records during an FTA request, the business remains responsible for the resulting compliance risk. However, businesses may use cloud-based or international hosting solutions, provided their records remain complete, secure, accessible, and reproducible on demand. ASPs must also maintain separate transactional logs and promptly confirm to businesses when they successfully transmit invoices or tax data to the Authority.
Appendix 5: Advance Payments and Retention Billing
The second addition, Appendix 5, addresses two areas that have created uncertainty for businesses in contracting-heavy sectors: advance payments and retention amounts. These issues are particularly relevant to construction and real estate development businesses.
For advance payments, the guidelines confirm that businesses must issue an electronic tax invoice when VAT becomes due on the advance amount received. Businesses cannot defer the invoice until they issue the final invoice.
The final invoice should cover only the remaining balance and must reference the earlier advance invoice through the “Preceding Invoice Reference” field in the e-invoice data structure.
For example, consider a contract worth AED 10,000 plus 5% VAT. If the supplier receives an advance payment of AED 1,000 plus VAT, the supplier must issue a separate structured e-invoice for the advance. The final invoice should then cover the outstanding AED 9,000 and link back to the advance invoice.
For retention billing, businesses may continue following their existing commercial and accounting practices, provided they comply with VAT and e-invoicing requirements. Each e-invoice should reflect the net amount payable at the relevant billing stage, with VAT calculated on that amount. The retained amount should then be invoiced separately when the buyer becomes liable to release and settle it.
Free Zone Scope and the Intra-Group Grace Period Confirmed
Version 1.1 also clarifies the free zone applicability of the UAE e-invoicing mandate. Businesses operating in free zones, including DMCC, JAFZA, IFZA, RAKEZ, ADGM, and DIFC, fall within the scope of the mandate. The guidelines provide no general exemption for free zone businesses.
The guidelines also introduce a 24-month grace period, starting on 1 January 2027, for intra-group transactions within registered UAE VAT groups. These transactions remain within the technical scope of the e-invoicing mandate. However, the grace period gives VAT-grouped businesses additional time to align their internal invoicing processes before full enforcement applies to group-level transactions.
What Stayed the Same
Businesses reviewing Version 1.1 should also understand what remains unchanged. The voluntary pilot phase continues from 1 July 2026 and remains open to businesses that choose to participate.
The phased mandatory implementation dates also remain unchanged, beginning with businesses that have annual revenue exceeding AED 50 million. The five-corner operating model, based on the Peppol network and PINT AE invoice specification, also remains in place. In-scope businesses must continue to issue and receive structured XML invoices through an appointed Accredited Service Provider (ASP).
Businesses that have already completed their e-invoicing scoping and roadmap work do not need to restart their planning. Instead, they should use Version 1.1 to refine their systems, contracts, data-retention arrangements, and ASP requirements. This approach allows businesses to incorporate the new guidance while maintaining progress toward the existing implementation deadlines.
What Businesses Should Do Now
For finance and tax teams, Version 1.1 calls for action in three key areas.
First, businesses that use advance payment structures should review their billing workflows. This is particularly important for professional services, contracting, and project-based businesses. Systems should generate advance invoices correctly and link them to final invoices through the Preceding Invoice Reference field. Businesses should not treat advance invoices as informal pro-forma documents.
Second, construction and real estate businesses that use retention billing should review their existing processes against the new guidance. They should ensure their ERP or billing systems correctly calculate the net amount payable and generate a separate electronic invoice for the retained amount when it becomes due.
Third, businesses outsourcing e-invoicing or data storage should review their technology provider contracts. Agreements should clearly address record retention, data accessibility, security, and audit readiness. Outsourcing these functions does not transfer the underlying legal responsibility from the business.
With the pilot phase now open and the first mandatory deadline for large taxpayers approaching in January 2027, Version 1.1 provides a clearer technical foundation for implementation. Businesses that configure these requirements now can reduce the risk of delays and compliance issues during testing and the transition to mandatory e-invoicing.
Frequently Asked Questions
Does Version 1.1 change the UAE e-invoicing implementation timeline?
No. The pilot phase remains scheduled for 1 July 2026, and the phased mandatory deadlines remain unchanged. The first mandatory phase applies to businesses with annual revenue exceeding AED 50 million. Version 1.1 only clarifies the treatment of record storage, advance payments, and retention billing.
Who is legally responsible for retaining e-invoice records - my business or my ASP?
The business remains legally responsible for retaining records, even when it outsources storage to an ASP or another provider. Cloud-based and international hosting are permitted, provided the records remain complete, secure, accessible, and reproducible for the FTA.
How should advance payments be invoiced under Version 1.1?
Businesses must issue a structured electronic tax invoice as soon as VAT becomes due on the advance amount received. The final invoice then covers only the remaining balance and must cross-reference the earlier advance invoice.
Is there any relief for intra-group transactions within a UAE VAT group?
Yes. VAT groups benefit from a 24-month grace period starting on 1 January 2027 for intra-group transactions. However, these transactions remain within the technical scope of the e-invoicing mandate.
NR Doshi & Partners helps UAE businesses assess their e-invoicing readiness against the latest Ministry of Finance guidelines. Our support covers advance payment workflows, retention billing configuration, and ASP contract reviews. Speak to our advisory team to prepare your business for the July 2026 pilot phase and beyond.
Author:
Written by the Digital Tax Advisory team at NR Doshi & Partners, an accounting firm in Dubai helping construction, contracting, and services businesses align billing workflows with the UAE’s evolving e-invoicing requirements, including advance payments, retention invoicing, and record storage.
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