What Is a Peppol Access Point?
Peppol Access Point

In June 2026 the UK government announced that Peppol will be the core interoperability network for e-invoicing, ahead of the requirement for all VAT invoices to be e-invoices from April 2029. You do not connect to Peppol directly. You connect through an access point: a service provider that has been accredited to operate on the network and has signed its agreements. Choosing one, or checking that your software already includes one, is the main practical decision e-invoicing asks of a small business.

What an access point does

When you send an invoice, your access point:

1. Receives the invoice from your software.
2. Converts it into the Peppol format, such as Peppol BIS Billing 3.0, if your software has not already done so.
3. Validates it against the Peppol rules, so errors such as a missing VAT number are caught before sending.
4. Looks up your customer in the Peppol directory to find which access point they use and which documents they can receive.
5. Delivers it securely to your customer's access point.
6. Reports back whether it was delivered or rejected.

When a supplier sends you an invoice, the process runs the other way: your access point receives it and passes it into your software. To receive invoices, your access point registers your business on the network under a participant identifier, typically based on a number you already have, such as your VAT number.

Where the access point sits in the four-corner model

Because corners 2 and 3 are independent, you can choose your provider on price and features without worrying about which provider your customers use.

Kinds of access point provider

Access points come in a few forms, and for a small business the difference is mostly about how they fit with the software you already use:

The government's consultation response notes that several providers already offer e-invoicing services in the UK, including some Making Tax Digital software providers focused on small businesses, and that it expects the market to offer products at a range of price points, as it has for MTD.

How to choose an access point

Until the UK roadmap is published, treat any choice as provisional, and check that a provider commits to meeting the UK requirements once they are set out. The questions worth asking:

What an access point costs

Pricing varies. Some accounting software includes Peppol sending and receiving in its subscription; some providers charge per document or per bundle of documents; others charge a monthly fee. For a small business sending a few dozen invoices a month, the cost is likely to depend mostly on the software package you choose. Compare the total, including receiving, rather than a headline price per invoice.

The government's case for e-invoicing rests partly on savings: its response says e-invoicing has the potential to cut invoicing costs by between 60% and 80%, and some respondents reported processing costs of £30 to £50 per invoice for manual handling.

Receiving invoices through your access point

Access points are not just for sending. Once your business is registered on Peppol, suppliers can send their invoices straight to your software. That means fewer PDFs to download, no retyping, and bills that can be matched automatically to your records. Under the April 2029 mandate, VAT invoices must be both issued and received electronically, so the receiving side matters as much as sending.

Moving between providers

Because your registration on the network is tied to your participant identifier rather than to one provider, you can move it from one access point to another when you change software. Ask a new provider how it handles the move, and make sure your old provider releases the registration and gives you an export of your invoices before you leave.

Security and records

Access points exchange invoices securely between providers, which the government sees as one of e-invoicing's advantages against invoice fraud: invoices move through known systems, and checks can flag an invoice that asks for payment to a new bank account. You still need to keep your VAT records, so check how long your provider stores invoices and how you can get copies. The guide on how long to keep invoices covers the rules.

A worked example

Sam is a VAT-registered electrician who does maintenance work for a housing association. Today, Sam's invoicing app produces a PDF, which Sam emails to the association's accounts inbox, where someone types it into their finance system. Once both sides are on Peppol, Sam creates the invoice in the same app as before. The app, acting as or through an access point, converts it into the Peppol format and checks it: if the association's purchase order number is missing, the check fails and Sam fixes it before anything is sent. The access point looks up the housing association on the network, finds its access point and delivers the invoice. Minutes later, it sits in the association's finance system, matched to the order and ready to approve. Sam's app shows it as delivered, so there is no "we never got it" at the first chase.

Nothing about the content of the invoice changes. It still needs everything a VAT invoice must show, including a unique invoice number. What changes is how it travels.

When an invoice is rejected

Because invoices are checked against the rules before and on delivery, errors surface at once instead of weeks later. Common reasons for a rejection include a missing or malformed field, such as a VAT number or buyer reference, totals that do not add up, or a customer who is not registered to receive that document type. A good access point tells you clearly what failed and lets you correct and resend. If an invoice was delivered but was wrong, the fix is the same as today: issue a credit note, which Peppol also carries, and a corrected invoice.

Access points and the public sector today

Some UK businesses already need Peppol. NHS Supply Chain requires its suppliers to issue e-invoices through the Peppol network, and all bodies covered by the Public Procurement Act 2023 must accept e-invoices that comply with the European standard EN 16931. If you supply the public sector, ask your customer how it wants to receive invoices; an access point may already be the simplest route. The UK mandate guide explains how this fits with the wider 2029 requirement.

Do you need one yet?

Not yet, and not at all if you are outside the mandate. The mandate as announced covers VAT invoices, and the government has said many of the smallest businesses that are not required to register for VAT and choose not to will not be obliged to adopt e-invoicing. The VAT registration checker shows where you stand. If a public sector customer, such as an NHS body, already asks for Peppol invoices, you may need one sooner.

Common misunderstandings

• "I need to build or host something." You use a provider's access point, usually through your software.
• "My customers must use my provider." Each side chooses its own.
• "It only sends." It also receives your suppliers' invoices.
• "Any provider will do." Only accredited Peppol providers can operate as access points, and UK-specific requirements are still to come.

Related terms

An access point is your connection to Peppol, the network behind UK e-invoicing. The guide to Peppol access points and the guide to choosing e-invoicing software go further, and BIS Billing 3.0 explains the invoice format access points exchange.