The government has said that from April 2029, UK businesses will have to issue all VAT invoices as e-invoices, meaning structured data sent between systems rather than PDFs, covering sales to other businesses and to the public sector. The government has chosen a decentralised model built on the Peppol network, with no government portal in the middle, and the detailed implementation plan and UK standards are still to come.
In this article
The short version
- From April 2029, UK businesses must issue all VAT invoices as e-invoices.
- It covers invoices between VAT-registered businesses and to the public sector, not consumers.
- The model is decentralised and Peppol will be the core network.
- Real-time reporting to HMRC won't be introduced alongside the 2029 mandate.
- The detailed implementation plan is due at Budget 2026.
What has been decided
The government confirmed the mandate at Budget 2025 in November 2025: from April 2029, businesses will be required to issue all VAT invoices as e-invoices. A few other points have been settled since.
The mandate covers VAT invoices, which in practice means invoices between VAT-registered businesses and invoices to the public sector. Sales to consumers aren't part of it, because VAT invoices aren't normally issued to consumers.
Your invoices will pass between your system and your customer's, or the providers you each choose, in an agreed format. The government calls this a decentralised model, because there's no central government platform in between.
In June 2026 the government confirmed that Peppol, an existing international network for exchanging electronic invoices, will be the core network for UK e-invoicing.
The government has also said it won't introduce real-time reporting of invoices to HMRC alongside the 2029 mandate. It's keeping the idea under review for later, once e-invoicing is well established.
What is still to come
Most of the practical detail hasn't been published yet. The government has said it will set out an implementation plan at Budget 2026, and work continues on:
- the UK's own version of the Peppol data standard, setting exactly which fields an invoice carries and how
- the rules for the service providers, known as access points, that will connect businesses to the network
- what happens to existing invoice-exchange arrangements between large companies that don't fit the new system
- whether the mandate arrives for everyone at once or in stages
Any more detailed timetable you see before then is a forecast. You can reasonably expect the plan to answer most of these questions, but until it's published, it's safest to assume the 2029 date stands and the details may still move.
What an e-invoice is and how it will change your invoicing
An e-invoice in this sense is structured data: each field, from your VAT number to the line totals, is labelled so your customer's system can read it without anyone retyping it. A PDF looks like an invoice to a person but is just a picture of one to a computer, so a PDF attached to an email isn't expected to count once the mandate starts.
In practice, for most small businesses, the change will happen inside your accounting or invoicing software. Your software, or a provider it connects to, will send the invoice over the Peppol network to your customer's provider, which delivers it into their system. Under the model announced so far, there's no government portal to log into and no new form to fill in.
What doesn't change is what an invoice has to say. A VAT invoice will still need your VAT number, the time of supply, the VAT on each line and the rest of the usual details, just in a structured format. And it won't change how your customer pays. They'll still need a reason and a way to pay on time, and you'll still need to chase the ones who don't.
What to do before 2029
None of this is urgent, and none of it depends on the final standard, but a few jobs will help you before the deadline as well as at it.
Get your invoices out of documents and into a system. If your invoices only exist as Word files, PDFs or spreadsheets, 2029 will mean a bigger change than for a business already invoicing from accounting software that holds structured data.
Tidy the details a structured format will expose. That means one consistent numbering sequence, a supply date on every invoice, and customers recorded under the legal name you contract with, not a nickname or trading name. When a person reads a PDF they can work around a missing date or an unfamiliar name, but a system receiving structured data is far less forgiving.
Ask your accounting software provider what their plan is. The UK standard isn't final yet, so a provider can share its plan but can't yet promise it's ready for the final version.
E-invoicing changes how a VAT invoice is delivered, not how it gets paid, and Adfin works on the getting-paid side: it imports invoices from Xero and QuickBooks, sends a payment link your customer can use straight away, and its collection agents chase anything unpaid on the schedule you set, with payments reconciled back to the invoice.
Common questions
Is e-invoicing mandatory in the UK? Not yet. The government has said that from April 2029 businesses will have to issue all VAT invoices as e-invoices.
Does the mandate cover invoices to consumers? No. It covers VAT invoices, which are issued between VAT-registered businesses and to the public sector, not to consumers.
Which e-invoicing standard will the UK use? The government has confirmed Peppol as the core network. The UK's own version of the Peppol data standard is still being developed.
Will HMRC require real-time reporting of invoices? Not in 2029. The government has said it won't introduce real-time reporting alongside the mandate, though it may consider it later.
Is a PDF invoice an e-invoice? Not under the 2029 mandate. An e-invoice is structured data a system can read without retyping, which a PDF isn't.
Do I need to buy new software now? Probably not yet. Get your invoicing into a system and tidy your data now, and choose specific e-invoicing tools once the implementation plan and UK standard are published.
Sources
- HM Treasury - Budget 2025 (accurate as of October 2026) https://www.gov.uk/government/publications/budget-2025-document/budget-2025-html
- HMRC and Department for Business and Trade - Promoting electronic invoicing across UK businesses and the public sector: consultation response (accurate as of October 2026) https://www.gov.uk/government/consultations/promoting-electronic-invoicing-across-uk-businesses-and-the-public-sector/outcome/promoting-electronic-invoicing-across-uk-businesses-and-the-public-sector-consultation-response
- HM Treasury and HMRC - Tax Update 2026: simplification, modernisation and fairness (accurate as of October 2026) https://www.gov.uk/government/publications/summary-of-tax-update-2026-simplification-modernisation-and-fairness/tax-update-2026-simplification-modernisation-and-fairness-summary
- HMRC - Record keeping (VAT Notice 700/21) (accurate as of October 2026) https://www.gov.uk/guidance/record-keeping-for-vat-notice-70021
