E-Invoicing Mandate Solution

Mandatory e-invoicing without the mandate panic

The UK government confirmed Peppol as the network for e-invoicing in June 2026, with mandatory e-invoicing for VAT invoices proposed from April 2029. HMRC and the Department for Business and Trade are still working through the final detail, so treat anyone selling you a locked-down compliance checklist with suspicion.

What we can tell you is the direction of travel is set. Every VAT-registered business will need to exchange structured invoice data. Getting ahead of that now means you're not scrambling when the rules are confirmed at the Autumn Budget.

Open ECX already turns whatever your suppliers send today, any format, into exactly the structured data the mandate is shaping up to require. No re-onboarding your supply chain. No ripping out your ERP. No panic.

Your suppliers don't need to change a thing

Month-end statement reconciliation eating two or three days of your AP team's time. Every single month.

Ahead of the mandate, not scrambling after it

Duplicate payments and missed credits sitting undetected in your ledger, only spotted when a supplier calls.

One Peppol Access Point, zero extra vendors

Auditors asking for transaction records your team has to reconstruct manually from spreadsheets and email trails.

How Open ECX handles mandatory e-invoicing

Four steps, zero disruption to your suppliers

Supplier sends an invoice. Any format, PDF, email, portal, EDI. No supplier change required.

Open ECX extracts and transforms the data automatically, whatever format it arrived in.

Your invoice is converted into structured, Peppol-ready data aligned with what the mandate is shaping up to require.

Structured data lands in your ERP, ready for processing, with a full digital audit trail.

"Since partnering with Open ECX we've seen efficiency savings, speeding up of processes and improved accuracy, whilst building great relationships with our suppliers."

Rhiannon Lucas, Project Transaction Manager, NG Bailey

Key features of Open ECX for mandatory e-invoicing

Everything you need to be ready, whatever the final mandate requires:

Any format in, structured data out

PDFs, EDI, portals, emails. Open ECX transforms whatever your suppliers send into structured, Peppol-ready data automatically.

Certified Peppol Access Point

Open ECX is an accredited Peppol Access Point, the network the UK government has confirmed for e-invoicing interoperability.

Zero supplier disruption

Your suppliers keep working exactly as they do now. All the transformation happens on our side, not theirs.

Full digital audit trail

Every invoice, transformation and exchange is logged, giving you a complete, audit-ready record without the manual filing.

Built to flex with the mandate

As HMRC and the Department for Business and Trade confirm the final requirements, Open ECX adapts. You won't need to rebuild your process twice.

Works with your existing ERP

No rip-and-replace. Open ECX integrates with the ERP you already run, so mandate readiness doesn't mean a system overhaul.

Mandatory e-invoicing is coming to the UK. Before April 2029, not after.

Mandatory e-invoicing without the mandate panic

How Open ECX handles mandatory e-invoicing

Key features of Open ECX for mandatory e-invoicing