UAE E-Invoicing Guidelines Version 1.1: What Changed and What Businesses Need to Know

On June 1, 2026, the UAE Ministry of Finance released Version 1.1 of the UAE Electronic Invoicing Guidelines. While the overall framework remains unchanged, the new version provides additional clarification on invoice storage, advance payments, and retention payments. These updates give businesses a clearer understanding of their obligations before Electronic Invoicing becomes mandatory in January 2027. This blog explains the UAE e-invoicing framework, implementation timelines, invoice categories, and the key changes introduced in Version 1.1. 

How the UAE Electronic Invoicing System Works

The UAE has adopted a Peppol-based 5-corner model for Electronic Invoicing, where invoices do not travel directly between the supplier and the buyer. Every invoice passes through Accredited Service Providers on both sides and is reported to the Federal Tax Authority in near real time. All Electronic Invoices are issued, transmitted, and received in structured XML format, and no QR codes, barcodes, or PDF invoices are valid under this system.

The five corners of the model are:

• Corner 1 (Supplier): The business or entity issuing the invoice, responsible for initiating the invoice and transmitting the data to their ASP in an agreed format.

• Corner 2 (Supplier's ASP): Validates the invoice data received from the supplier, converts it into UAE standard XML format if needed, transmits it to the buyer's ASP, and reports Tax Data to the FTA simultaneously.

• Corner 3 (Buyer's ASP): Receives and validates the invoice from Corner 2, delivers it to the buyer in an agreed format, and reports Tax Data to the FTA upon successful validation. If validation fails, Corner 3 notifies both Corner 2 and Corner 5, and no Tax Data is reported.

• Corner 4 (Buyer): Receives the validated Electronic Invoice from their ASP and processes it within their own accounting or ERP system.

• Corner 5 (FTA): Receives Tax Data from both the supplier's ASP and the buyer's ASP, validates it, and sends electronic confirmation back to each access point upon successful reporting.

Who Is Required to Comply

Electronic invoicing is mandatory for Business-to-Business (B2B) and Business-to-Government (B2G) transactions conducted in the UAE, regardless of VAT registration status, unless specifically excluded under Article 4 of Ministerial Decision No. 243 of 2025. 

Transactions in scope:

• B2B (Business to Business): All commercial transactions between two businesses operating in the UAE, regardless of whether either party is registered for VAT.

• B2G (Business to Government): Supplies made by businesses to government entities, including contracts tendered through UAE government procurement portals.

• G2B (Government to Business): Supplies made by government entities to businesses operating in the UAE.

• G2G (Government to Government): Transactions carried out between two government entities, whether federal or local.

• Non-resident businesses: Where a business without a UAE place of residence is required to issue Tax Invoices under the UAE VAT Decree-Law, those invoices must be issued as Electronic Invoices.

Transactions out of scope:

• B2C (Business to Consumer): Supplies made to individual consumers fall outside the scope, and there is no obligation for the supplier or a billing agent to issue an Electronic Invoice for a consumer transaction. 

• Sovereign government activities: Government Entity transactions conducted in a sovereign capacity and not in competition with the private sector are excluded from Electronic Invoicing.

• Airline passenger services: International passenger flights that issue electronic tickets, along with related airline services that issue Electronic Miscellaneous Documents (EMDs), are exempt from Electronic Invoicing requirements. 

• Exempt financial services: Financial services that are exempt from VAT, including qualifying services provided to non-resident customers as zero-rated exports, are excluded from Electronic Invoicing requirements.

Key Changes in UAE E-Invoicing Guidelines Version 1.1

1. Advance Payments

When a business receives an advance payment, a Tax Invoice must be issued immediately at the time of receipt. The final invoice must then cover only the remaining balance, not the full contract value, because a Tax Invoice was already issued for the advance portion. A reference to the original advance invoice can be included in the invoice reference fields so both parties can track the transaction. The PrepaidAmount field in the final invoice can be left blank, since the final invoice reflects only the outstanding amount.

Example: A contract is worth AED 10,000 plus 5% VAT, an advance of AED 1,000 is received and a Tax Invoice for AED 1,050 is issued at that point. The final invoice covers only AED 9,000 plus VAT, not the full contract value.

2. Retention Payments

For contracts with retention arrangements, businesses can continue using their existing commercial and accounting practices as long as they comply with VAT and Electronic Invoicing requirements. The process typically involves the following two invoices: 

• First invoice: Issued for the amount payable after deducting the retention amount, at the time the milestone or delivery is completed by the supplier.

• Second invoice: Issued separately for the retained amount, at the point in time when the buyer becomes liable to release and settle the retention.

3. Invoice Storage Obligations

Version 1.1 adds Appendix 4, providing detailed clarification on storage and retention obligations under Article 11 of Ministerial Decision No. 243 of 2025.

For businesses:

• Legal responsibility stays with the business: Even where storage is delegated to an ASP through a contractual arrangement, the obligation and liability for retaining Electronic Invoices, Electronic Credit Notes, and associated data under Article 11 remain with the business itself. 

• Retention periods: Records must be retained for 5 years for Taxable Persons, 5 years for all other Persons, and 7 years for real estate records. An additional 4 years applies in the event of an FTA dispute or ongoing tax audit.

For ASPs:

• Transactional logs: ASPs must maintain their own separate logs for every invoice covering the full end-to-end cycle, including unique transaction identifiers, transmission statuses, and routing information. These logs are distinct from invoice content and form part of the ASP's own compliance obligations under the Peppol Service Provider Agreement and the UAE Peppol Authority Specific Requirements.

• Transmission confirmation: ASPs must inform businesses without delay whenever an Electronic Invoice or Tax Data has been successfully submitted to the FTA.

On storage location:

• No restriction on system layer or geography: There is no requirement to store invoices at any specific system layer, including C1 or C4, and storage inside or outside the UAE is equally permissible under the guidelines.

 

The only requirement: Records must be kept complete, secure, and accessible throughout the retention period and made available to the FTA when requested. 

Phased Implementation Timeline

The Ministry of Finance will roll out e-invoicing in stages based on defined implementation timelines:

Entity	Annual Revenue	ASP Appointment Deadline	Mandatory Go-Live Date
Business	AED 50 million or more	30 October 2026	1 January 2027
Business	Below AED 50 million	31 March 2027	1 July 2027
Government Entity	N/A	31 March 2027	1 October 2027

Electronic Invoice Categories

The following categories outline the types of electronic invoices and credit notes recognised under the UAE e-invoicing framework, including both standard billing and self-billing transactions:

Type	Standard Billing	Self-Billing
Tax Invoice	Electronic Tax Invoice	Self-billed Electronic Tax Invoice
Tax Credit Note	Electronic Tax Credit Note	Self-billed Electronic Tax Credit Note
Invoice	Commercial Invoice	Not applicable
Credit Note	Electronic Credit Note	Not applicable

Tax Categories

Tax category is a mandatory field on every Electronic Invoice, applied at the supply level and applicable to both Electronic Tax Invoices and Commercial Invoices.

No.	Tax Category	When It Applies
1	Standard Rate	Taxable supply subject to 5% VAT
2	Exempt from VAT	Supplies exempt under Article 46 of the VAT Decree-Law
3	Outside Scope of VAT	Place of supply is outside the UAE or excluded from being a supply
4	Reverse Charge	Domestic supply of specific goods between two VAT registrants
5	Zero Rated	Qualifying exports, certain healthcare, education, and real estate
6	Margin Scheme	Qualifying second-hand goods subject to profit margin VAT

Invoice Scenarios and Key Rules

The guidelines define eight scenarios that carry specific mandatory field requirements. A single Electronic Invoice can cover multiple scenarios simultaneously.

No.	Scenario	Key Rule
1	Free Zone	Beneficiary details required in addition to customer details
2	Deemed Supply	Buyer electronic address must always be 0235:9900000097
3	Margin Scheme	VAT amount on the invoice must show as zero
4	Summary Invoice	Negative total payable amount must be issued as a Credit Note
5	Continuous Supply	Retention calculations go in a separate commercial document, not on the Electronic Invoice
6	Agent Billing	Compliance responsibility stays with the supplier, not the agent
7	E-Commerce	Compliance responsibility stays with the supplier, not the platform
8	Exports	Use predefined endpoint 0235:9900000099 if the buyer has no Peppol ID

Conclusion

Version 1.1 provides additional clarity on advance payments, retention arrangements, and invoice storage obligations, helping businesses better understand their Electronic Invoicing requirements. Businesses with annual revenue above AED 50 million must appoint an ASP by 30 October 2026 and be ready for the mandatory go-live date of 1 January 2027. To support a smooth transition, contact Flick Network at sales@flick.network for guidance on onboarding and compliance preparation. 

FAQs

1. Is Electronic Invoicing mandatory for all businesses in the UAE?

Yes. Electronic Invoicing is mandatory for every business conducting operations in the UAE, regardless of VAT registration status, unless specifically excluded under Article 4 of Ministerial Decision No. 243 of 2025.

2. What is the mandatory go-live date for large businesses?

Businesses with annual revenue of AED 50 million or more must go live with Electronic Invoicing by 1 January 2027, with the ASP appointment deadline set at 30 October 2026.

3. What format are Electronic Invoices issued in under the UAE system? 

All Electronic Invoices in the UAE are issued, transmitted, and received in structured XML format. PDF invoices, paper invoices, and QR code-based formats are not valid under this system.

4. Do businesses need to issue a Tax Invoice when they receive an advance payment?

Yes. A Tax Invoice must be issued at the time the advance payment is received. The final invoice then covers only the remaining balance, since a Tax Invoice was already issued for the advance portion.

5. What happens if a business delegates invoice storage to their ASP?

Delegation of storage to an ASP through a contractual arrangement is permissible, but the legal obligation under Article 11 of Ministerial Decision No. 243 of 2025 remains with the business. The ASP holds records on behalf of the business, but compliance responsibility does not transfer.