UK Announces Mandatory eInvoicing from April 2029

The UK government has confirmed that mandatory eInvoicing will start on 1 April 2029, marking a major step forward in the country’s approach to tax digitalisation and VAT compliance.

While full details are still to come, this announcement signals the beginning of a multi-year transition that will affect all VAT-registered businesses trading in the UK.

Below, we outline what’s known so far, how this mandate fits into the bigger global picture and what organisations can do now to get ready.

From April 2029, all VAT invoices will need to be issued as structured eInvoices.

Although the technical specifications haven’t been released yet, it’s expected the UK will adopt a 4-corner Peppol model, bringing it in line with international best practice and allowing smoother cross-border interoperability.

Unlike some EU countries, no real-time reporting has been announced at this stage. The initial focus is on moving from paper and PDF invoices to structured, machine-readable formats.

This will be a significant change from the current voluntary B2B model, where eInvoicing is only used when both parties agree.

Here’s the timeline as it currently stands:

This reform is a key component of the UK government’s strategy to modernise the tax system and reduce the tax gap.

Through greater digitalisation, HMRC aims to improve data accuracy, reduce errors, strengthen audit trails and streamline the VAT process for both taxpayers and government.

Mandatory eInvoicing supports these goals by ensuring VAT-relevant data is captured in a structured and machine-readable format.

The UK is joining a growing number of countries introducing national eInvoicing requirements as part of wider tax and digital-transformation reforms.

This change aligns with:

By signalling a Peppol-aligned approach, the UK is positioning itself within an internationally recognised eInvoicing ecosystem, helping businesses reduce manual processes and improve interoperability across markets.

You don’t need to wait for the full roadmap to get started. Businesses can begin preparing by:

Mandatory eInvoicing in the UK may still be a few years away, but preparing early will ensure a smooth transition.

Don’t wait for the mandate. Get in touch with Tickstar to discuss your eInvoicing readiness and how to prepare for the upcoming transition.

The dates and information provided in this blog are current as at December 2025 and are subject to change. Readers are encouraged to verify the latest updates in their region to ensure compliance.