Are you prepared for the shift to mandatory e-invoicing?

E-invoicing is set to become mandatory from April 2029 for business-to-business (B2B) and business-to-government (B2G) transactions where VAT is due.

While the deadline may seem a long way off, recent findings suggest many SMEs remain unclear on what e-invoicing involves and what steps they may need to take to prepare.

Early engagement will be key to ensuring a smooth transition and avoiding disruption closer to the deadline.

What is e-invoicing?

E-invoicing is the digital exchange of invoice data directly between supplier and customer in a structured, machine-readable format.

This allows invoices to be processed automatically, integrated into accounting systems and handled without manual input.

It is also important to understand what does not qualify as e-invoicing. This includes the use of PDFs, word documents or emailed invoices.

A lack of awareness across SMEs

Recent HMRC research highlights a clear knowledge gap across the SME community:

• Many businesses are unfamiliar with what e-invoicing is
• Adoption remains low, even where awareness exists
• A large proportion of businesses have not yet seen any official communication on the changes

There is also evidence that some businesses may already be using systems that align with e-invoicing but do not recognise it as such, reinforcing the need for clearer understanding.

Understanding the impact on your business

E-invoicing is expected to be a significant shift in how businesses manage invoicing and compliance.

For many organisations, this will involve:

• Reviewing current invoicing processes
• Assessing existing accounting systems and software
• Ensuring compatibility with future requirements
• Updating internal controls and workflows

For businesses that leave preparation too late, there is a greater risk of operational disruption, increased costs and pressure on finance teams closer to implementation.

Why acting early makes a difference

Although further detail and a full implementation roadmap are expected later this year, there is a clear opportunity for businesses to get ahead and start preparing.

Early engagement allows you to:

• Understand how the changes will affect your business
• Identify gaps in your current processes and systems
• Plan system upgrades or changes in a controlled way
• Align e-invoicing with wider finance transformation initiatives
• Avoid a last-minute reactive approach

In many cases, early preparation can also unlock wider efficiencies – improving accuracy, reducing manual workload, and strengthening financial processes.

We’re here to help

At Azets, we support businesses with a joined-up approach – combining our accounting services and tax advisory expertise with practical implementation support.

We can help you:

• Assess your current invoicing processes
• Clarify what e-invoicing will mean in practice
• Review your systems and identify appropriate solutions
• Integrate compliance changes with your wider finance strategy

Speak to our team to understand what e-invoicing means for your business and how to start preparing now.