The UK Government has announced that Peppol will serve as the core interoperability network for eInvoicing in the United Kingdom.
The announcement was made as part of HMRC’s Tax Update 2026: Simplification, Modernisation and Fairness policy paper under the theme of “Strengthening fairness and helping customers get their tax and customs right”. The wider programme sets out the Government’s ambition to modernise tax administration, reduce administrative burdens, improve compliance and make it easier for businesses and individuals to interact with tax and customs systems.
Within this broader context, eInvoicing is seen as an important component of UK’s digital transformation agenda. The increased use of structured electronic invoices has the potential to improve the quality and accuracy of business data, streamline invoicing processes and support more efficient tax reporting and compliance. The Government’s decision to identify Peppol as the core interoperability network provides an early indication of the technical foundations being considered as the UK prepares for a planned eInvoicing mandate in 2029.
The announcement enables stakeholders to begin planning product development and implementation activities in preparation for future requirements.
The Peppol Interoperability Framework enables the secure and standardised exchange of electronic business documents between organisations. Used by governments and businesses around the world, the framework supports cross-platform and cross-border document exchange through a common set of technical specifications and governance arrangements.
According to the UK Government, the adoption of Peppol as the core interoperability network is intended to support the future development of the UK’s eInvoicing ecosystem while providing greater certainty to market participants. The Government has also confirmed that it will continue to engage with stakeholders regarding the role of existing legacy systems that may not be able to interoperate within the future framework.
The announcement represents an important milestone in the UK’s eInvoicing journey and reflects the growing recognition of interoperable digital infrastructure as an enabler of business-to-business and business-to-government document exchange. By establishing a common framework, the UK joins a growing number of countries that are leveraging interoperable standards to support digitalisation across the economy.
OpenPeppol notes the announcement and looks forward to continuing engagement with UK authorities, service providers, software developers, and other stakeholders as implementation plans develop and the transition towards broader eInvoicing adoption progresses.