UK confirms Peppol as core network for 2029 e-invoicing mandate
The UK Government officially confirmed on 23 June 2026 that Peppol will be the core interoperability network for mandatory e-invoicing starting April 2029, removing uncertainty for software vendors and businesses planning their rollout.
The UK Government announced on 23 June 2026 that Peppol will be the core interoperability network for the mandatory e-invoicing mandate launching on 1 April 2029. The confirmation gives software developers and service providers clear technical direction to begin product development and rollout planning. A full implementation roadmap is expected in November 2026.
The UK Government officially confirmed on 23 June 2026 that Peppol will be the core interoperability network for the upcoming e-invoicing mandate. The announcement came as part of the “Tax Update 2026: Simplification, Modernisation and Fairness” package delivered by the Exchequer Secretary to the Treasury, Dan Tomlinson, in a Written Ministerial Statement to the House of Commons.
The confirmation removes a major area of uncertainty for ERP vendors, Access Point operators, and multinational companies planning their UK rollout. Until this announcement, Peppol was only the strongly implied technical foundation based on the November 2025 consultation response and OpenPeppol’s establishment of a dedicated UK Working Group in late 2025.
What the mandate covers
The e-invoicing requirement applies to all VAT invoices in B2B and B2G transactions. B2C invoices remain out of scope. The mandate goes live on 1 April 2029.
The UK will use a decentralised 4-corner Peppol model based on EN 16931 and Peppol BIS Billing 3.0 specifications. AS4 will serve as the secure transmission protocol. This approach means no centralised clearance system and no real-time reporting in phase 1.
What happens next
OpenPeppol’s dedicated UK Working Group has an 18-month mandate to develop UK-appropriate Peppol BIS invoice specifications aligned with the 2029 deadline.
The Government will publish a full implementation roadmap at Budget 2026 in November 2026. This roadmap will cover phasing, syntaxes, supported networks, enforcement, and grace periods. The Government has also flagged that the role of legacy systems that cannot interoperate with Peppol remains under discussion with stakeholders.
What this means for businesses
Peppol now becomes a non-negotiable building block for UK operations. Companies already connected to Peppol for Belgium, France, Germany, Poland, Romania, the Nordics, or NHS supply should leverage their existing Access Points.
Legacy EDI and proprietary networks will need to interoperate via certified Peppol Access Points. This includes bilateral VANs and native platforms from vendors such as Tradeshift, Basware, Coupa, and SAP Ariba.
The UK is now firmly aligned with the ViDA architecture direction, which uses EN 16931 and 4-corner exchange. This alignment simplifies pan-European e-invoicing programme design for multinationals.
Businesses should now begin budget approval, software and Access Point selection, master data clean-up, and engagement with the HMRC and Department for Business, Trade and Industry co-design phase.