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The UK e-invoicing
mandate, explained.
The government has confirmed e-invoicing is coming, with VAT invoices expected to be in scope from April 2029 and a full roadmap due at Budget 2026. Here is the timeline, what Peppol means, and how to get ready early.
- Target date
- April 2029
- Roadmap due
- Budget 2026
- Likely standard
- Peppol
- Expected scope
- VAT-registered businesses
Last reviewed June 2026. We update this guide as the Budget 2026 roadmap is published.
From consultation to mandate.
- Feb–May 2025Consultation
HMRC and DBT consult on UK e-invoicing
A joint government consultation gathered views on standardising e-invoicing across business and the public sector, and on how it should align with VAT reporting.
- Nov 2025Direction set
Government confirms it will mandate e-invoicing
Ministers set out the intention to introduce mandatory e-invoicing as part of Making Tax Digital and the wider digitalisation of VAT.
- Budget 2026Roadmap
Implementation roadmap published
The detailed plan, including scope, accepted formats and phasing, is expected at Budget 2026. This is the moment the dates below firm up.
- 2027–2028Preparation
Preparation and voluntary onboarding
A window for businesses to ready their systems and suppliers, with phased or voluntary adoption expected before the mandate takes effect.
- April 2029Mandatory
E-invoicing becomes mandatory for VAT invoices
On current government planning, structured e-invoicing is the target for VAT invoices from this point. Final scope follows the Budget 2026 roadmap.
Every invoice arrives structured.
The shift is from documents a person reads to data a system processes. That distinction is the whole point of the mandate, and the most common thing finance teams get wrong.
A PDF emailed to AP is not an e-invoice. It still has to be extracted.
A UBL or CII file over Peppol is. It posts automatically.
A real e-invoice is structured data
An e-invoice is a machine-readable file, such as UBL or CII, that flows straight into a finance system. It is not a PDF or a scan, even though those are electronic.
Delivered over a validated network
Structured invoices move through the Peppol network machine-to-machine, so both sides get validated, traceable data. A PDF attached to an email is not an e-invoice; the records travel directly between systems.
It pairs with digital reporting
The mandate sits alongside HMRC's wider digitalisation of VAT, pointing towards near-real-time reporting built on the same structured data.
What is Peppol?
Peppol (Pan-European Public Procurement On-Line) is an international framework that lets organisations exchange structured documents like invoices over a secure network, whatever software each side runs. The UK already uses it in the NHS, which is why it is the frontrunner for the wider mandate.
The four-corner model
What is a Peppol access point?
A certified provider that connects you to the network. You never join Peppol directly, you go through an access point that sends, receives and validates on your behalf.
Where Stratas fits
Stratas ingests Peppol, UBL and CII alongside your PDFs, scans and emails, so one workflow covers every format. No separate e-invoicing platform to run.
Whichever finance system you run, the mandate lands the same way.
MRI Qube
OrderWise
Sage 200
Business Central
NetSuite
Xero
SAP
QuickBooks
Oracle Fusion
Infor CSIFive moves that make 2029 a non-event.
You do not need every answer before Budget 2026. You do need to know where you stand, so the roadmap becomes a simple checklist.
Map how invoices arrive today
Know your split of PDFs, scans, email, EDI and structured invoices. That mix is your real starting point.
Check your ERP and AP system
Can it receive and post structured invoice data, or only OCR a PDF? This is where most readiness gaps sit.
Decide how you connect to Peppol
Through an access point, or a platform that includes one and handles validation and matching for you.
Bring your suppliers with you
The mandate is two-sided. Suppliers need to send structured invoices, so factor supplier onboarding in early.
Pilot before the rush
Teams that start ahead of the deadline avoid rushed rollouts, data-quality issues and supplier disruption.
The questions
finance teams ask.
Not yet. The government has confirmed it intends to mandate e-invoicing, and VAT invoices are expected to be in scope from April 2029. A full implementation roadmap is due at Budget 2026. For now, e-invoicing is voluntary for most private-sector businesses, though the NHS already requires Peppol-based invoicing from its suppliers.
Current government planning points to April 2029 for mandatory e-invoicing on VAT invoices, with a preparation window across 2027 and 2028. The detailed timeline and scope are due to be confirmed in the Budget 2026 roadmap.
Based on the 2025 consultation, it is expected to apply to VAT-registered businesses for B2B invoicing. Public-sector (B2G) e-invoicing over Peppol is already established in the NHS. The final scope will be set out in the implementation roadmap.
A Peppol access point is a certified service provider that connects you to the Peppol network so you can send and receive structured documents such as invoices. You do not join Peppol directly; you connect through an access point, or through a platform like Stratas that includes one and handles validation and matching for you.
EN 16931 is the European standard that sets out what information an electronic invoice must contain, essentially an agreed data model for invoices. Because every compliant system follows the same rules, an invoice can move between organisations regardless of which software created it. Peppol's invoicing format (Peppol BIS Billing) is built on EN 16931, and UK planning to date points to alignment with the same standard rather than a UK-specific one.
Interoperability means different finance systems can send and receive invoices from each other automatically, whatever software each business runs, whether that is Sage, Microsoft Dynamics, SAP, Oracle or something else. It comes from combining a shared network (Peppol) with a shared data standard (EN 16931), so an invoice created in one system can be read and posted in another without anyone rekeying it.
No. A true e-invoice is structured data that software can read and process automatically, such as UBL or CII. A PDF or a scanned image is a digital document, but it still has to be extracted, so on its own it does not meet e-invoicing requirements.
Making Tax Digital changed how businesses keep VAT records and file returns. E-invoicing changes how invoices themselves are exchanged, moving them into a structured format that is often paired with near-real-time digital reporting to HMRC. They are connected parts of the same move to digitalise UK tax.
Start by mapping how your invoices arrive today, then check whether your ERP and AP system can receive and post structured invoice data. Decide how you will connect to Peppol, bring your suppliers into the plan, and pilot early rather than waiting for the deadline. Stratas already processes Peppol, UBL and CII alongside your PDFs and scans, so you can get ready without replacing your current workflow.
Be ready before the deadline.
Talk to us about handling Peppol e-invoices alongside your existing PDFs, scans and emails, in one workflow.