# The UK e-invoicing mandate: complete guide > Everything confirmed about mandatory e-invoicing in the UK: who is in scope from April 2029, Peppol, the decentralised model, real-time reporting, the Budget 2026 roadmap and how to prepare. - Canonical URL: https://einvoices.uk/mandate - Last updated: 20 October 2026 (2026-10-20) - Author: Floris Lindenaar, Editor, e-invoicing expert (https://einvoices.uk/authors/floris-lindenaar) - Publisher: einvoices.uk (https://einvoices.uk) - Language: en-GB; covers the United Kingdom ## Sources - [Consultation: Promoting electronic invoicing](https://www.gov.uk/government/consultations/promoting-electronic-invoicing-across-uk-businesses-and-the-public-sector) - [Tax update 2026: simplification, modernisation and fairness summary](https://www.gov.uk/government/publications/summary-of-tax-update-2026-simplification-modernisation-and-fairness/tax-update-2026-simplification-modernisation-and-fairness-summary) - [HMRC Transformation Roadmap: update 2026](https://www.gov.uk/government/publications/hmrc-transformation-roadmap-progress-update-2026/hmrc-transformation-roadmap-update-2026) --- ## The short version | | | |---|---| | Start date | April 2029 | | What | VAT invoices must be structured e-invoices | | Who | B2B supplies between VAT-registered businesses, and B2G supplies to public bodies | | How | Decentralised exchange over the Peppol network via service providers | | Reporting to HMRC | No real-time reporting at launch | | Next milestone | Implementation roadmap at Budget 2026 (28 October 2026) | ## What has been announced After consulting in 2025 on how to promote electronic invoicing, the government used the Autumn Budget on 26 November 2025 to confirm that e-invoicing will be mandatory for VAT invoices from April 2029. HMRC's 2026 update to its transformation roadmap restated that commitment and said HMRC would work with the Department for Business and Trade to publish a roadmap of milestones at Budget 2026. In its Tax Update on 23 June 2026 the government confirmed Peppol as the core interoperability network for UK e-invoicing. That means businesses will send and receive e-invoices through providers connected to Peppol, much as many NHS suppliers already do. ## What is still to be confirmed - The exact data standard and any UK-specific rules (a UK CIUS) - How B2C sales, receipts and simplified invoices are treated - Any thresholds, exemptions or phased start for smaller businesses - How service providers will be accredited - Penalties and the transition for legacy systems - Whether and when a reporting element (a "fifth corner") follows later ## How to prepare now 1. Count your invoices: how many you send and receive, in which formats, and through which systems. 2. Ask your accounting, ERP or AP software provider about their Peppol and mandate plans. 3. Check your master data: VAT numbers, company numbers and addresses for every customer and supplier. 4. Find out which of your customers already accept e-invoices, especially public-sector ones. 5. Plan the budget and the owner for the project, even if work starts in 2027. For a step-by-step plan, read our [2029 readiness checklist](https://einvoices.uk/news/uk-e-invoicing-readiness-checklist), or use the [scope checker](https://einvoices.uk/tools/am-i-in-scope). ## Key dates - Feb–May 2025: Government consults on e-invoicing. HMRC and the Department for Business and Trade consult on promoting electronic invoicing across UK businesses and the public sector, including whether to mandate it. Source: [GOV.UK consultation: Promoting electronic invoicing](https://www.gov.uk/government/consultations/promoting-electronic-invoicing-across-uk-businesses-and-the-public-sector) (status: done) - 26 Nov 2025: Mandate announced at Autumn Budget 2025. The government confirms that all VAT invoices between VAT-registered businesses, and to public bodies, must be e-invoices from April 2029, using a decentralised model. No real-time reporting at launch. (status: done) - June 2026: Peppol confirmed as the UK network. The government's Tax Update confirms Peppol as the core interoperability network for UK e-invoicing, giving software developers a direction of travel. Source: [Tax update 2026 summary (GOV.UK)](https://www.gov.uk/government/publications/summary-of-tax-update-2026-simplification-modernisation-and-fairness/tax-update-2026-simplification-modernisation-and-fairness-summary) (status: done) - 28 Oct 2026: Budget 2026: implementation roadmap expected. HMRC and DBT committed to publish a roadmap setting out milestones for the mandate at Budget 2026. Expected to cover standards, scope details and next steps. Source: [HMRC Transformation Roadmap: update 2026](https://www.gov.uk/government/publications/hmrc-transformation-roadmap-progress-update-2026/hmrc-transformation-roadmap-update-2026) (status: next) - 2027–28: Standards, guidance and legislation. Technical specifications, provider accreditation, legislation and HMRC guidance are expected to be finalised ahead of go-live. Exact dates will follow the roadmap. (status: future) - Apr 2029: Mandatory e-invoicing goes live. VAT invoices for B2B and B2G supplies must be issued and received as structured e-invoices. (status: future) Full timeline: https://einvoices.uk/timeline ## Frequently asked questions ### When does e-invoicing become mandatory in the UK? The government has confirmed that e-invoicing will be mandatory for VAT invoices from April 2029. ### Who does the UK e-invoicing mandate apply to? It applies to VAT invoices issued between VAT-registered businesses (B2B) and from businesses to public-sector bodies (B2G). Details of any exemptions, thresholds and the treatment of B2C sales are expected in the implementation roadmap. ### Will HMRC run a central e-invoicing portal? No. The UK has chosen a decentralised model. Invoices are exchanged between businesses through service providers on the Peppol network, without a central government platform in the invoice flow. ### Will invoices be reported to HMRC in real time? Not at launch. The government's response to the 2025 consultation said real-time reporting will not be introduced alongside the mandate. ### Does a PDF invoice count as an e-invoice? No. An e-invoice is structured, machine-readable data. A PDF, even one sent by email, is not an e-invoice under the mandate. ### What happens next? HMRC and the Department for Business and Trade committed to publishing a roadmap with milestones at Budget 2026, which takes place on 28 October 2026. --- How to cite: "UK e-invoicing mandate 2029: the complete guide", einvoices.uk, 20 October 2026, https://einvoices.uk/mandate einvoices.uk is an independent publication and is not affiliated with HMRC or the UK Government. Nothing here is tax advice; check the sources and official GOV.UK guidance before acting.