London, 23 June 2026 – HM Treasury and HMRC have officially confirmed Peppol as the core interoperability network for the UK’s mandatory e-invoicing programme. The mandate takes effect on 1 April 2029 and applies to all VAT-registered businesses in the United Kingdom. With this announcement, the UK e-invoicing mandate Peppol 2029 framework is set: the four-corner model based on Peppol BIS Billing 3.0 and the European invoice standard EN 16931.
What was announced on 23 June?
HMRC published the results of Tax Administration and Maintenance Day 2026 on 23 June 2026. The confirmed key points:
- Peppol is the designated core interoperability network for UK e-invoicing.
- The mandatory go-live date is 1 April 2029, covering B2B and B2G VAT invoices.
- The technical standard is Peppol BIS Billing 3.0, combined with EN 16931 and the AS4 transport protocol.
- There will be no real-time reporting at the 2029 launch. Digital VAT reporting in real time may be added in a later phase.
- A full implementation roadmap and transition rules are expected at Autumn Budget 2026 in November.
- OpenPeppol has established a dedicated UK Working Group with an 18-month mandate to develop UK Peppol specifications.
Context: from consultation to confirmation
The UK first announced plans for mandatory e-invoicing as part of its Making Tax Digital programme. After several rounds of public consultation, Peppol has now been formally selected as the network. For international companies already using Peppol to reach European customers, the UK’s choice aligns with a familiar technical infrastructure.
Peppol.nu published an in-depth guide on the UK e-invoicing mandate covering the background and initial plans. The 23 June announcement replaces uncertainty with concrete technical parameters.
What this means for your business
Peppol-ready is largely UK-ready. If you already work with a Peppol Service Provider for the European market, you are largely on the right technical foundation. Peppol BIS Billing 3.0 is the same profile used across Europe. Verify that your Service Provider will support the UK-specific specifications once the UK Working Group finalises them, expected during 2027.
Plan ahead, implement on time. With a go-live date of 1 April 2029, the timeline may seem comfortable, but ERP adjustments, onboarding, testing, and supply chain agreements take time. Use our comparison tool to find a Peppol Service Provider with UK coverage.
The full roadmap including transition periods and any exemptions follows at Autumn Budget in November 2026. Peppol.nu will keep you updated.
