UK Confirms Mandatory E-Invoicing from April 2029

The UK government has confirmed that electronic invoicing will become mandatory for all VAT invoices from April 2029.

The Tax Authority announced the timeline in its 2026 Progress Update to the Transformation Roadmap, which outlines the government’s plans to modernise and digitalise the UK tax system.

The Tax Authority is working with the Department for Business and Trade to prepare a detailed e-invoicing roadmap, which is expected to be published alongside Budget 2026.

The roadmap should explain the main implementation stages, technical standards and requirements businesses will need to follow before the mandate takes effect.

During 2026, the Tax Authority and the Department for Business and Trade are also holding policy and technical workshops with businesses, software providers and industry representatives. Feedback from these discussions will help shape the final e-invoicing system.

The planned roadmap would give businesses approximately two and a half years to prepare before mandatory e-invoicing begins in April 2029.

The e-invoicing programme is not being developed as a separate measure. It forms part of the Tax Authority’s broader plan to create a more digital and automated tax administration system.

Although detailed rules have not yet been published, the mandate is expected to affect both accounts payable and accounts receivable processes, as businesses will need to issue and receive VAT invoices in an approved electronic format.

Companies should begin reviewing their current invoicing processes and identifying manual steps, outdated systems and invoice formats that may not meet future requirements.

Businesses should also monitor Budget 2026 closely, as this is expected to provide further information on technical standards and the implementation timetable.

Companies may also consider engaging with industry consultations and reviewing available e-invoicing software solutions.

The confirmation gives businesses an early indication of the direction of UK tax administration and sufficient time to start preparing for mandatory e-invoicing in 2029.