United Kingdom Publishes Roadmap for Mandatory E-Invoicing from April 2029

On October 28, 2026, HM Revenue & Customs (HMRC) and the Department for Business and Trade released the Roadmap for E-Invoicing Implementation together with the Autumn Budget. The document sets out the decisions, publications and readiness steps leading to mandatory e-invoicing for VAT invoices, which will take effect on April 1, 2029.

The roadmap builds on a sequence of earlier announcements. At Budget 2025, the government confirmed that VAT invoices would have to be issued as e-invoices from 2029. In January 2026, HMRC and the Department for Business and Trade began co-creating the regime with businesses, software providers and industry bodies. Peppol was then confirmed as the UK’s core interoperability framework at Tax Update 2026 in June, and HMRC’s Transformation Roadmap update in July set the start date at April 2029.

The government links the reform to the cost of late payments, which it estimates at £11 billion a year for the UK economy, with small businesses spending an average of 86 hours annually chasing overdue invoices. Exchanging structured invoice data is expected to support automation, improve data quality, reduce manual errors and make fraudulent invoices harder to create.

Scope of the Mandate

From April 1, 2029, VAT-registered persons, including public sector bodies, will need to be able to issue and receive VAT invoices as e-invoices unless a specific exemption applies. The UK has opted against phasing the requirement by company size, so large enterprises, SMEs, sole traders, partnerships, charities and other VAT-registered entities will all become subject to it on the same date.

The obligation follows existing VAT invoicing rules: an e-invoice will be required wherever a VAT invoice is required today, meaning taxable supplies between VAT-registered persons within the UK. The rules on when a VAT invoice must be issued and what it must contain will remain unchanged.

The following fall outside the mandate:

• sales to consumers, as no VAT invoice is required;
• cross-border transactions, although businesses may issue e-invoices by agreement with their overseas customers, and existing place of supply rules continue to apply;
• invoices for transactions not subject to VAT and invoices issued by businesses that are not VAT-registered, which may still be sent as e-invoices on a voluntary basis.

Non-established taxable persons (NETPs) registered for UK VAT will be subject to the same e-invoicing rules as UK-based entities.

Only invoices exchanged as structured data will qualify. PDFs, word-processed documents, image files such as JPEG, HTML invoices displayed on a web page or in an email, and images sent by fax will not be treated as e-invoices.

Exemptions

Exemptions will be narrowly defined. HMRC is developing an exemption for digitally excluded VAT-registered persons, based on criteria already used for Making Tax Digital (MTD) for VAT, such as age, health conditions, disability, location, religious objections to using computers, or lack of internet access. Other grounds may be considered by HMRC upon application. Details on how to apply, how to communicate exempt status to trading partners, and how to interact with exempt suppliers and customers will be published by April 2028, while guidance for specific groups is due by the end of 2027.

Peppol-Based Model

The UK will rely on a decentralized model built on Peppol. Businesses will connect to the network through certified Access Points, usually provided by their existing software provider, and will not need to become Access Points themselves.

The Peppol network is governed internationally by OpenPeppol. In the UK, the Peppol Authority function currently sits within NHS Supply Chain, reflecting the NHS’s long-standing use of Peppol. A decision on its long-term location is expected in Spring 2027. The roadmap confirms that the Peppol Authority will not receive copies of VAT invoices.

The UK may also introduce Peppol Authority Specific Requirements (PASRs) for software providers, covering areas such as business identifiers, security, reporting and transaction information, service levels, local interoperability and software provider accreditation.

All e-invoicing users will need to register a business identifier as part of their Peppol participant identity. As the UK has no single identifier covering all organization types, a decision on accepted identifiers will be published between October 2027 and April 2028.

Businesses that use Electronic Data Interchange (EDI) or other legacy systems will be able to keep them, provided they can also exchange e-invoices through the new framework. Further guidance is expected in Autumn 2027.

Currently, public sector bodies covered by the Procurement Act 2023 must be able to accept e-invoices, and Peppol is already widely used in the NHS under the NHS eProcurement Strategy.

Implementation Timeline

The government has committed to confirming the full requirements at least 12 months before the go-live date. Any changes made after April 2028 are to be kept to a minimum and introduced only where necessary based on stakeholder feedback.

• Spring 2027: public technical consultation on UK e-invoicing standards and Access Point certification requirements; decision on the Peppol Authority’s long-term location; primary legislation, to be introduced as part of Finance Bill 2026, is expected to become law, subject to Parliamentary approval
• Autumn 2027: guidance on EDI and legacy systems
• End of 2027: guidance for specific groups within the VAT-registered population
• October 2027–April 2028: publication of the full requirements, including scope, exemptions, standards, business identifiers and software provider requirements
• By April 2028: exemption application process, details of taxpayer obligations and updated VAT guidance
• Spring 2028: publication of software provider management requirements
• Summer 2028: readiness testing with software providers
• Autumn 2028 or early 2029: possible completion of secondary legislation
• Winter 2028: infrastructure and governance arrangements become operational
• April 1, 2029: e-invoicing becomes mandatory; all software providers in the regime are expected to have completed any required accreditation with the UK Peppol Authority

On penalties, HMRC intends to build on the existing VAT invoicing penalties framework while keeping enforcement proportionate.

Impact on Businesses

For many smaller businesses already using accounting software, the transition is expected to involve limited changes. Several software providers have committed to including e-invoicing in their core packages at no additional cost, often within the software already used for MTD, and free or low-cost digital invoicing products are available for those without suitable software.

Larger organizations, or those with more complex systems, may opt for solutions integrated with their ERP, supply chain and accounting systems. The roadmap acknowledges that such implementations can be costly and complex and will require coordination across tax, finance, procurement and digital teams, while also delivering significant efficiency savings.

Businesses do not need to start implementing e-invoicing before the detailed requirements are published, but they may begin reviewing current invoicing processes, informing relevant teams, consulting advisers and researching software providers.

Digital Reporting Consultation

Alongside the roadmap, HMRC has opened a separate 12-week consultation, “Extending the benefits of e-invoicing: digital reporting.” Digital reporting is distinct from the 2029 mandate: while e-invoicing governs how invoices are exchanged between businesses, the consultation explores whether selected structured data could be accessed or shared in the future to streamline tax administration. It is not an obligation at this stage. The government has stressed that no decisions have been taken and no preferred model or reporting framework has been proposed. Any future system would have to offer clear reciprocal benefits for businesses and ensure robust data protection, privacy safeguards and commercial confidentiality.

There’s more you should know about e-invoicing in the United Kingdom – learn more about the new and upcoming regulations.