UK publishes the roadmap to its 2029 e-invoicing mandate
The UK details its e-invoicing roadmap, clarifying the mandate’s scope and timeline, while key technical requirements remain pending.
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E-Invoicing in the United Kingdom:
Upcoming 2029 Mandate & Peppol
Last update: 2026, October 30
Summary
The UK plans to introduce mandatory e-invoicing in 2029, relying on a four-corner model using Peppol. E-invoicing is also accepted by UK public entities since 2020.
B2G Transactions
E-invoicing accepted, will become mandatory in 2029
Since 2020, UK public entities have accepted electronic invoices compliant with the EN 16931, with some entities in the healthcare sector even requiring suppliers to use Peppol.
From April 2029, e-invoicing via Peppol will become mandatory for domestic B2G VAT invoices.
B2B Transactions
E-invoicing will become mandatory in 2029
The upcoming e-invoicing obligation will apply to B2B VAT transactions from April 2029 via the Peppol network.
B2C Transactions
No e-invoicing obligation
No e-invoicing or e-reporting obligation applies to business-to-consumer transactions in the United Kingdom.
Table of Contents
What the Law Says
B2G E-Invoicing
The United Kingdom already requires public entities to accept compliant electronic invoices and will introduce mandatory e-invoicing from April 2029 for domestic VAT invoices.
Since 2020, public administrations have been required to accept and process electronic invoices compliant with the European Norm (EN) 16931 for covered public contracts, as currently set out in Section 67 of the Procurement Act 2023 [↗︎]. This e-invoicing acceptance requirement is in line with EU Directive 2014/55/EU.
Separately, some public bodies in the healthcare sector, including NHS England, require suppliers to submit invoices through the Peppol network.
From April 1, 2029, a countrywide mandate [↗︎], led by HM Revenue & Customs (HMRC), the UK tax authority, will take effect. It will apply to domestic VAT invoices, including relevant B2G invoice flows.
The mandate will rely on the Peppol network, following a four-corner model. Detailed rules on scope, exemptions, formats and service providers will be released progressively, following the official HMRC roadmap [↗︎].
Invoices must generally be archived for six years, or for ten years for businesses using the VAT One Stop Shop or Mini One Stop Shop schemes.
B2B E-Invoicing
E-invoicing is currently voluntary, and it will become mandatory through the Peppol network from April 2029 for domestic VAT invoices.
The upcoming nationwide mandate is led by HM Revenue & Customs (HMRC), the UK tax authority. It was announced at Budget 2025 and detailed in the government’s e-invoicing policy paper [↗︎].
From April 1, 2029, domestic VAT invoices, including relevant B2G invoice flows, will have to be issued and exchanged electronically. The mandate will rely on the Peppol network, following a four-corner model.
Detailed rules on scope, exemptions, formats and service providers requirements will be released progressively, following the official HMRC roadmap [↗︎].
In the meantime, businesses can still transmit B2B invoices in the following ways:
- Paper-based invoices
- PDF invoices supported by an e-signature or a complete audit trail
- Electronic invoices, exchanged for example via EDI or Peppol
Invoices must generally be archived for six years, or for ten years for businesses using the VAT One Stop Shop or Mini One Stop Shop schemes.
B2C E-Invoicing
The United Kingdom does not have a B2C e-invoicing or e-reporting mandate.
Companies may continue to issue business-to-consumer invoices and receipts through their usual channels, including paper invoices, PDF invoices sent by email and printed receipts.
Timeline
B2G e-invoicing mandatory for the NHS
Suppliers covered by the National Health Services (NHS) Standard Contract start submitting their invoices electronically to their public customers through Peppol.
B2G e-invoicing acceptance
Public administrations in the UK must be able to receive and process EN16931 e-invoices from their suppliers.
E-invoicing enabling legislation
Finance Bill 2026-27 is expected to receive Royal Assent, giving HMRC the legal powers to implement the 2029 mandate
Key requirements & guidance publication
Publication of main requirements & guidance, including scope, exemptions, technical standards, and software provider requirements.
Start of the e-invoicing mandate
E-invoicing becomes mandatory via Peppol for all VAT transactions
Latest E-Invoicing News in the United Kingdom
Peppol model confirmed for 2029 mandatory e-invoicing in UK
The UK Government's Tax Update 2026 has officially named Peppol as the core network for the upcoming 2029 e-invoicing mandate.
Webinar – What the 2029 UK mandate means for your business
Storecove's webinar will cover UK's e-invoicing requirements, how it will impact your organization, and how one API can simplify compliance.
Technical Details (2029 E-Invoicing Mandate)
E-invoicing will become mandatory from April 2029 for domestic VAT transactions. The framework will rely on the Peppol network in a four-corner model, with no transmission of invoice data to HMRC at this stage.
Invoice delivery
The UK government has confirmed that the 2029 mandate will rely on the Peppol network. In practice, suppliers and buyers will connect through Peppol Access Points, either directly or through their accounting, ERP or e-invoicing software provider.
HM Revenue & Customs (HMRC), the UK tax authority, is expected to become the UK Peppol Authority before the mandate takes effect.
Existing bilateral EDI and other legacy arrangements are also likely to remain in use alongside Peppol. The official roadmap recognises their importance for many businesses. However, organisations using these arrangements will still need to be capable of exchanging e-invoices through Peppol which will act as the default solution.
Further guidance on the treatment of existing EDI arrangements is expected in Autumn 2027. Detailed rules on delivery, interoperability and technical requirements will be confirmed between October 2027 and April 2028.
Invoice content & format
UK authorities have hinted, without formally confirming it, that a UK-specific Peppol International specification (PINT-UK) may be developed.
According to the official implementation roadmap, the government will consult on technical standards in Spring 2027. It will then publish the final technical requirements regarding invoice standards between October 2027 and April 2028.
The roadmap also confirms that the government will define the business identifiers accepted within the future Peppol framework during the same period. This is particularly important in the UK, where no single company identifier covers every type of organisation.
Certified service providers
The UK 2029 e-invoicing mandate will primarily rely on Peppol Access Points, which must already meet OpenPeppol’s certification requirements to operate on the network.
However, the official roadmap also refers to broader service-provider requirements. At this stage, it remains unclear whether these will be limited to the existing requirements for Peppol Access Points, or whether the UK will introduce a more extensive national accreditation framework.
The government plans to publish its software-provider management requirements in Spring 2028. These should clarify the respective obligations for Access Points, software providers and other service providers, as well as any UK-specific accreditation requirement.
Roadmap to the 2029 mandate
To support a smooth and effective implementation of the mandate, the government will work closely with businesses and software providers, providing guidance and sufficient time to prepare for the new requirements.
The official roadmap [↗︎] identifies the following key milestones:
- October 28, 2026: launch of a public consultation [↗︎] on the potential future use of e-invoice data for digital reporting, open until January 20, 2027.
- Finance Bill 2026–27: introduction of enabling legislation, expected to receive Royal Assent in spring 2027, subject to parliamentary approval.
- Spring 2027: public technical consultation on e-invoicing standards and announcement of the government’s decision on the long-term location of the UK Peppol Authority.
- By the end of 2027: publication of guidance on exemptions, including for digitally excluded persons.
- Autumn 2027: publication of guidance on the interaction between existing EDI arrangements, legacy systems and the future e-invoicing framework.
- October 2027 to April 2028: publication of the main requirements and guidance, covering scope, exemptions, technical standards, updated VAT guidance, business identifiers and software-provider requirements.
- Spring 2028: publication of software-provider management requirements.
- Summer 2028: readiness testing with software providers.
- Winter 2028: infrastructure and governance arrangements expected to become operational.
- April 2028 to April 2029: implementation preparations and government awareness campaign.
- Autumn 2028 to early 2029: secondary legislation may be finalised, depending on policy decisions and parliamentary time.
- April 1, 2029: mandatory e-invoicing takes effect.
Technical Details (B2G)
Public administrations in the United Kingdom have been required to accept electronic invoices since 2020. Some healthcare-sector entities and Scottish public administrations follow specific arrangements, while domestic B2G VAT e-invoicing will become mandatory from April 2029.
B2G e-invoicing
E-invoicing is possible for B2G transactions in the United Kingdom, as public entities must accept and process compliant electronic invoices submitted by suppliers for covered public contracts.
Electronic invoices following this framework must comply with the European Norm (EN) 16931. However, the government has not prescribed a single invoice format, usually giving suppliers the flexibility to choose the EN 16931 syntax that best suits their needs when invoicing public entities.
From 2029, the nationwide mandate will require domestic VAT invoices, including relevant B2G invoice flows, to be issued and exchanged electronically through the Peppol network.
For more information, refer to the section above: “Technical Details (2029 E-invoicing Mandate)”.
National Health Services - E-Invoicing via Peppol
The National Health Service (NHS) was an early adopter of the Peppol network. Its 2014 e-procurement strategy [↗︎] recommended Peppol as the standard for automated purchase orders and invoices.
Since April 1, 2019, suppliers covered by the NHS Standard Contract have been required to submit invoices electronically, either through the NHS e-invoicing platform or an alternative Peppol-compliant system.
NHS Supply Chain also uses Peppol to exchange purchase orders, despatch advices and invoices with its suppliers.
Suppliers using Peppol must submit invoices in the Peppol BIS 3.0 format.
B2G in Scotland - PECOS P2P Platform
The B2G e-invoicing regulations in Scotland are consistent with those in the rest of the UK: public entities must accept EN 16931-compliant invoices for covered public contracts, but no specific invoice format has been mandated.
To facilitate adoption and increase productivity, Scotland provides a shared e-invoicing solution called PECOS P2P [↗︎]. It is available to central and local government bodies, NHS Boards, universities and colleges, but is not a mandatory national delivery route.
Suppliers send invoices to a pre-agreed email address, usually as PDFs. The solution then extracts and validates the invoice data, creates an XML file and makes it available to the receiving public body.
Further details are available in the Scottish Government’s e-invoicing guide [↗︎].
The Invoicing Hub Word
United Kingdom
E-invoicing in the UK initially made significant progress through the NHS’s adoption of the Peppol network and the mandatory acceptance of EN 16931-compliant invoices by public contracting authorities.
More recently, following a national consultation, the UK government confirmed the introduction of a national e-invoicing mandate for domestic VAT invoices from April 2029. The framework will rely on a decentralised model based on Peppol, bringing the UK closer to the approach adopted by many European countries.
So far, the government has taken a methodical and transparent approach. Its implementation roadmap sets out a detailed sequence of consultations, legislation, technical standards and guidance publication before the mandate enters into force.
The announced milestones have, to date, been published on schedule, giving businesses and service providers greater visibility and confidence than is often the case with new e-invoicing mandates.
The alignment with European developments should facilitate cross-border invoicing for UK businesses, and simplify exchanges with their European trading partners. The decision to use Peppol also gives companies a familiar and interoperable route to comply with the future requirement.
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Powered by the world’s most sophisticated invoice-centric AI – trained on over 2 billion invoices – Basware's Intelligent Automation drives ROI by transforming finance operations. We serve 6,500+ customers globally and are trusted by industry leaders including DHL, Heineken and Sony. Fueled by 40 years of specialized expertise with $10+ trillion in total spend handled, we are pioneering the next era of finance.
With Basware, now it all just happens.
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ClearTax is an AI-native technology company helping enterprises automate compliance, invoicing, and finance operations across 50+ countries with intelligent, scalable, enterprise-grade solutions.
Quadient helps organisations prepare for e-invoicing by connecting invoice creation, delivery and collections. Finance teams gain greater visibility and control while improving efficiency, compliance and the overall invoicing experience.
Official Resources [↗︎]
UK tax authority, in charge of e-invoicing in the country, and future Peppol Authority
Public entity mandating the use of e-invoicing for its suppliers in the UK
Official roadmap to the 2029 e-invoicing mandate applying to VAT invoices
Overview of the government’s plans and objectives for the 2029 mandate
B2G e-invoicing platform available to Scottish public entities
Related Resources
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A strategic and technical guide to Belgium's e-invoicing reform for software editors: Peppol rules, identity checks, and archiving.
Every layer of e-invoicing validation checks that an invoice is well-formed. None checks whether the tax on it is correct.
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Basware is how the best finance teams gain complete control of every invoice, every time. Our Intelligent Invoice Lifecycle Management Platform ensures efficiency, compliance and control for all invoice transactions.
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