E-invoicing UK: what the 2029 mandate means for your ERP
According to the government’s roadmap, businesses and public bodies in the UK that are registered for VAT will have to issue and receive VAT invoices as e-invoices in a specified electronic format from 1 April 2029, unless an exemption applies.
The implementation roadmap was published on 28 October 2026, and Peppol will be the core network. We connect your ERP system to Peppol, through Lobster’s certified access point or the one you already use, with every invoice validated before it goes out.
This page sets out what the roadmap says, what it means for businesses with enterprise resource planning (ERP) systems and EDI flows, and how we build the e-invoicing flow. It summarises the official sources on GOV.UK and is not tax advice.
The UK e-invoicing mandate from April 2029
The requirement was announced at Budget 2025. According to the government’s roadmap, businesses and public bodies registered for VAT will have to issue and receive VAT invoices as e-invoices in a specified electronic format from 1 April 2029, unless an exemption applies.
The legislation has not been passed yet: the government expects the primary legislation to become law in spring 2027, subject to Parliament’s approval.
According to the government’s consultation response on GOV.UK, the requirement covers VAT invoices, which are typically issued in business-to-business and business-to-government transactions, not in sales to consumers.
Today there is no single mandated e-invoicing standard in the UK; businesses choose what to use. The technical standards for 2029 will be the subject of a public consultation in spring 2027.
E-invoicing implementation: the roadmap to April 2029
The roadmap for e-invoicing implementation sets out the milestones:
| When | What happens |
|---|---|
| 28 October 2026 | Roadmap for e-invoicing implementation published |
| Until 20 January 2027 | Consultation on possible future digital reporting of invoice data |
| Spring 2027 | Public consultation on the technical standards |
| Until October 2027 | Detailed design of the regime and consultation on technical standards |
| Autumn 2027 | Further guidance on legacy and EDI arrangements |
| October 2027 to April 2028 | Key requirements published |
| April 2028 to April 2029 | Communications campaign |
| 1 April 2029 | VAT invoices to be issued and received as e-invoices |
Any future digital reporting of invoice data to HMRC would be separate from the April 2029 requirement, and no decision has been taken.
E-invoicing networks in the UK: Peppol as the core
The government has announced that Peppol will be the core interoperability network for e-invoicing in the UK. Peppol is the electronic procurement system the government has named for that role.
Some buyers already use it: NHS Supply Chain requires its suppliers to send e-invoices over Peppol. Separately, public bodies are already required to accept e-invoices that comply with BS EN 16931.
Can you keep using EDI?
According to the roadmap, the government’s intention is that businesses can keep using their existing EDI and other legacy arrangements alongside the new e-invoicing framework, but they will also need to be able to exchange e-invoices through it. Further work will determine how this operates in practice, and the government will publish further guidance in autumn 2027.
If you invoice retailers and wholesalers via EDIFACT today, plan for both: the EDI flows your trading partners expect, and e-invoices over Peppol. Both can run in the same integration layer, which is how we build EDI integration for our customers.
E-invoicing compliance: what the mandate means for your ERP
A compliant format is only part of the job. The e-invoice also has to be produced from data in your ERP system, and incoming e-invoices have to reach your ledger. Automating both means nobody has to key invoices in by hand.
If you want to prepare, check whether your ERP or finance system can issue and receive structured e-invoices over Peppol, and which of your invoicing processes run as EDI today.
How we get e-invoices in and out of your ERP
We build the e-invoicing flow in Lobster Data Platform, so you only deliver invoice data in one place and invoices follow the same route as the rest of your integrations.
- Out of your ERP. Lobster takes the invoice data from your ERP system and maps it to the format the recipient requires: Peppol BIS Billing 3.0 on the Peppol network, which is Lobster’s default document type, or OIOUBL 2.1 for recipients in Denmark. National Peppol formats can also be supported by agreement with Lobster. The technical standards the UK will require are still to be consulted on in spring 2027.
- Validation. Each invoice is validated against EN 16931 and the Peppol rules before it is sent: mandatory fields, totals and codes. Invoice errors come back with an error code and an explanation, so they can be fixed before your customer sees the invoice.
- Delivery. Over Peppol, we send through Lobster’s own certified access point or through the access point you already use.
- Confirmations and errors. Lobster monitors confirmations and errors for every invoice, and the status can be passed on to your own systems. If an invoice goes through Lobster’s access point and the customer cannot be reached over Peppol, it is sent by email instead.
- Incoming invoices. E-invoices from your suppliers are delivered unchanged, exactly as they were sent, and are then mapped into your ERP system.
That keeps mapping, validation and monitoring on one platform. After go-live, you can run the flow yourselves or let us do it as managed integration services, so that confirmations, rejected invoices and new customers are followed up.
Does your ERP need to send and receive e-invoices? We start with a review of your invoice flows.
Talk to us about e-invoicingFrequently asked questions about e-invoicing in the UK
Is e-invoicing mandatory in the UK?
Yes. The government has announced mandatory e-invoicing from 1 April 2029: businesses and public bodies registered for VAT will have to issue and receive VAT invoices as e-invoices in a specified electronic format, unless an exemption applies. Public bodies already have to accept e-invoices that comply with BS EN 16931.
Which business transactions does the mandate cover?
The requirement covers VAT invoices, which are typically issued in business-to-business and business-to-government transactions, not in sales to consumers.
Who has to issue e-invoices?
According to the roadmap, businesses and public bodies registered for VAT, unless an exemption applies. The requirement covers VAT invoices issued and received from 1 April 2029.
Which network will the UK use?
The government has announced that Peppol will be the core interoperability network for e-invoicing in the UK.
Is Peppol used in the UK?
Yes, by some buyers already: NHS Supply Chain requires its suppliers to send e-invoices over Peppol. The government has also announced that Peppol will be the core interoperability network for e-invoicing in the UK.
Can we keep using EDI after April 2029?
According to the roadmap, the government’s intention is that businesses can keep using their existing EDI and other legacy arrangements alongside the new e-invoicing framework, but they will also need to be able to exchange e-invoices through it. Further work will determine how this operates in practice, and the government will publish further guidance in autumn 2027.
Will invoices have to be reported to HMRC in real time?
The government has said it will not introduce real-time reporting to HMRC alongside the e-invoicing mandate in 2029. Whether any digital reporting follows has not been decided: a consultation on possible future digital reporting of invoice data runs until 20 January 2027, and any reporting would be separate from the April 2029 requirement.
Which e-invoicing standards and format will be required?
Today there is no single mandated e-invoicing standard in the UK. The technical standards for the 2029 requirement will be the subject of a public consultation in spring 2027, and the key requirements are due to be published between October 2027 and April 2028.
What should we do now?
Check whether your ERP or finance system can issue and receive structured e-invoices over Peppol, and which of your invoice flows run as EDI today. According to the roadmap, the intention is that EDI can continue, but you will also need to be able to exchange e-invoices through the new e-invoicing framework.
How much does it cost?
It depends on how many invoice flows, formats and customers the solution has to cover. We will give you a quote once we have reviewed your setup.
Is your ERP ready for e-invoicing?
Tell us which ERP system you use and how your invoices go out today. We will come back with a proposal for getting e-invoices in and out over Peppol.