E-invoicing is moving from a software choice to a compliance and finance planning issue.The government has confirmed that e-invoicing will become mandatory for all VAT invoices from April 2029. HMRC and the Department for Business and Trade are due to publish an implementation roadmap at Budget 2026, setting out the milestones businesses should expect before the mandate takes effect.
This gives businesses time to prepare, but it also means 2026/27 is a useful year to review invoicing processes, customer and supplier data, software, payment terms and VAT controls. Waiting until the final year may create avoidable cost, disruption and pressure.
This guide explains what e-invoicing is, why the UK is moving in this direction and what businesses should plan before the Budget roadmap is published.