E-invoicing mandate

E-invoicing in United Kingdom

A sourced summary of the structured e-invoicing program in United Kingdom. It is a starting point, not a compliance certificate or proof of delivery.

At a glance

Scope: Government and business
Status: Upcoming
Network or channel: Peppol as the announced core interoperability network; the role of legacy systems remains under review

What this means for you

The UK has announced mandatory VAT e-invoicing for B2B and B2G transactions from April 2029, with Peppol as the core interoperability network. Final legislation, detailed transaction scope, standards, technical specifications and the exact start day remain pending, and the role of legacy systems is still under review.

What FreeBillGen can verify

For eligible saved invoices, FreeBillGen can prepare generic OASIS UBL and UN/CEFACT CII mappings and run its named internal checks. These mappings are not EN 16931, Factur-X, Peppol, national-CIUS or clearance-platform validation. FreeBillGen does not transmit them through a provider network.

Check this route in Invoice Passport

Official sources used

HMRC - Transformation Roadmap Progress Update 2026, e-invoicing (opens in a new tab) Source reviewed 2026-08-30
HMRC - Tax Update 2026: Peppol core interoperability network (opens in a new tab) Source reviewed 2026-08-30

General information only; not legal, tax, accounting, conformance, or delivery-provider advice. Confirm the current scope, technical profile, and channel with the official source or a qualified adviser.