e-Invoicing News, May 2026
20 e-invoicing mandate updates across 19 countries recorded in May 2026, each cited to its official source.
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May 2026
Argentina
Timeline Update
CAE generalisation postponed to 1 August 2026
General Resolution 5852/2026 moves the start of General Resolutions 5782 and 5785 from 1 June 2026 to 1 August 2026. From 1 June 2026 no adhesion request is needed to use the CAEA as a contingency method.
Romania
Status Change
B2B
Law 88/2026 makes RO e-Factura optional for CNP-identified individuals
Law No. 88/2026, approving Government Emergency Ordinance No. 128/2024, was published in Monitorul Oficial No. 459 of 29 May 2026 and applies from 1 June 2026. It removes the mandatory RO e-Factura obligation for suppliers identified by personal identification number, for natural persons farming under the special regime of article 315^1 of the Fiscal Code, and for foreign cultural institutes working in Romania under intergovernmental agreements. Those categories may still use the system by enrolling in the optional RO e-Factura register, and suppliers already entered in the mandatory or optional register may ask to be taken out with effect from the first day of the following month, per Law No. 88/2026 .
29 MayView Romania e-Invoicing mandate
El Salvador
Technical Update
DTE System Update Mandatory from December 2026
The Ministerio de Hacienda and DGII published a DTE system update with new fiscal events, revised validations, and extended invalidation deadlines, mandatory from 1 December 2026.
Finland
Timeline Update
B2B
State Treasury proposes an EN 16931 rule for e-invoices
The State Treasury published the summary of responses to its consultation of 2 February to 13 March 2026 on an assessment memorandum on electronic business documents. The memorandum set out three options for e-invoicing: making EN 16931 e-invoices mandatory between organisations, requiring an e-invoice to follow EN 16931 whenever one is used, or leaving the market to lead. The State Treasury's starting point for the next government's legislative programme is the narrower option, so e-invoicing would stay optional but any e-invoice would have to follow EN 16931. No legislative project is under way.
27 MayView Finland e-Invoicing mandate
Denmark
Technical Update
OIOUBL to Peppol Consultation Concluded
Erhvervsstyrelsen published its consultation note after 12 responses. The move away from OIOUBL is confirmed, starting with the invoice, and the format is now referred to as Nemhandel Faktura because the agency will not use naming controlled by private parties. The 18-month migration window stands, with its split between test, phase-in and phase-out still to be agreed with stakeholders. A working group kicked off on 4 June 2026.
Laos
Timeline Update
Tax Department links E-Tax Invoice to fixed-rate VAT deduction
26 MayView Laos e-Invoicing mandate
Sri Lanka
Technical Update
B2B
IRD circular sets out revised tax invoice rules and Web API concession
Circular SEC/2026/E/03 explains the revised tax invoice format under Gazette Extraordinary No. 2481/22. VAT-registered persons approved before 1 July 2026 to integrate their ERP systems with RAMIS through the Web API may omit the YYMMM_QQQQ_ prefix from invoice numbers, provided integration is completed by 31 December 2026.
Hungary
Technical Update
eÁFA (eVAT) M2M interface specification 2.0 published
19 MayView Hungary e-Invoicing mandate
Iran
Penalty Update
Iran keeps 100% forgiveness of e-invoicing penalties for 1405
12 MayView Iran e-Invoicing mandate
Eswatini
New Mandate
ERS launches TaxCore Electronic Invoicing Programme
The Eswatini Revenue Service officially launched the TaxCore Electronic Invoicing Programme, a continuous transaction control regime that transmits digitally signed invoice data to the ERS in real time or near real time, with full go-live targeted for January 2028, as announced by the Eswatini Revenue Service .
11 MayView Eswatini e-Invoicing mandate
United Arab Emirates
Timeline Update
ASP appointment deadline for large taxpayers moved to 30 October 2026
The Ministry of Finance announced targeted amendments to the eInvoicing decisions on 10 May 2026 . Ministerial Decision No. 66 of 2026 , issued 14 May 2026, replaced Article 5(1)(a) of Ministerial Decision No. 244 of 2025, so a Person with revenue of AED 50,000,000 or more appoints an Accredited Service Provider by 30 October 2026 instead of 31 July 2026, while the 1 January 2027 implementation date stands. Separately Ministerial Decision No. 56 of 2026 , issued 29 April 2026 and effective 1 May 2026, amended the accreditation criteria in Ministerial Decision No. 64 of 2025 to permit third-party PSP Products and to require a two-year operating history.
10 MayView United Arab Emirates e-Invoicing mandate
Turkey
Technical Update
e-Documents can be issued from new-generation payment devices
VUK General Communiqué No. 593 lets taxpayers issue the e-documents under Communiqué No. 509 that GİB names in its guides from new-generation payment recording devices. Device makers authorised for this take on the same duties as private integrators. It applied from publication on 8 May 2026.
North Macedonia
Timeline Update
North Macedonia e-Faktura enters second testing phase
The Public Revenue Office (UJP) opened a second voluntary test phase, widening testing to API services for downloading, accepting, rejecting and cancelling e-invoices and to the tax indicators that determine the tax treatment of a supply. In the first phase 390 companies registered and authorised 781 users, of which 89 integrated successfully over an API connection. The e-invoicing law was still a draft and no exact mandatory start date was confirmed; UJP continued to expect mandatory application in the third quarter of 2026.
Paraguay
Timeline Update
B2B
General Resolution DNIT No. 52/2026 designates new mandatory e-invoice issuer groups
General Resolution DNIT No. 52/2026 of 6 May 2026 designates further groups of taxpayers as mandatory electronic invoice issuers within SIFEN: group 19 from 1 June 2026, group 20 from 1 September 2026, group 21 from 1 December 2026, group 22 from 2 March 2027, group 23 from 1 June 2027 and group 24 from 1 September 2027. From each group's start date, the authorisation and stamping of pre-printed or self-printed documents lapses the following day.
6 MayView Paraguay e-Invoicing mandate
Dominican Republic
Timeline Update
DGII grants six-month extension for small, micro and unclassified taxpayers
The Directorate General of Internal Taxes (DGII) granted an automatic six-month extension for taxpayers classified as small, micro and unclassified to implement mandatory electronic invoicing (e-CF). The deadline moves from 15 May 2026 to 15 November 2026, and the extension applies automatically without any request from the taxpayer.
6 MayView Dominican Republic e-Invoicing mandate
Qatar
Status Change
Qatar Cabinet Approves Draft E-Invoicing Law
The Council of Ministers, chaired by Prime Minister Sheikh Mohammed bin Abdulrahman bin Jassim Al-Thani, approved on 6 May 2026 a draft law on electronic invoicing and its executive regulations. The draft law, prepared by the Ministry of Finance in coordination with the General Tax Authority (GTA), aims to establish the legal framework governing the issuance of e-invoices and notices, enhance transparency, and keep pace with digital transformation. Implementation timeline, technical specifications, and clearance architecture to be defined upon legislative enactment of the executive regulations.
Slovakia
Timeline Update
Slovakia E-Faktúra Ecosystem Expands Ahead of 2027 Mandate
The Slovak Financial Administration (Finančná správa SR) has published successive updates to the e-Faktúra technical framework and the list of certified Digital Postmen (digitálni poštári) ahead of the 1 January 2027 mandatory deadline. Key publications include the Slovak Solution Architecture v1.2 (30 March 2026), Peppol BIS transposition rules v1.8 (23 April 2026), and updated lists of certified and accrediting providers (6 May 2026). Voluntary use of the e-Faktúra system opened in Q2 2026 following the 11 December 2025 implementation launch press release. The mandate remains scheduled for 1 January 2027 under Law 385/2025 Z.z., implementing ViDA Directive (EU) 2025/516.
Sri Lanka
Status Change
B2B
Sri Lanka begins phased e-invoicing rollout via RAMIS Web API
The Inland Revenue Department issued Notice SEC/PN/VAT/2026-03, confirming that the National e-Invoicing System, which began with a pilot for a selected group of VAT-registered persons, is being rolled out in phases. Selected garment export, tea export and tea manufacturing entities transmit VAT invoice and schedule data (Schedules 01, 04 and 07) from their ERP systems to RAMIS in real time through a secure Web API, and tea brokers' Colombo Tea Auction records are transmitted from 1 May 2026. Phase 1 covers export-oriented enterprises and Phase 2 all VAT-registered persons, with full Web API integration expected by the end of 2026. This moves Sri Lanka's B2B status from planned to phased.
Countries with news in May 2026
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