VAT Modernisation in Ireland: Phase One Explained

VAT modernisation in Ireland is entering a critical new phase following recent updates from Revenue. These changes will affect how businesses issue invoices and report VAT data. With the right taxation accounting guidance, businesses can prepare and reduce future disruption.
Revenue has outlined the next steps in Ireland’s VAT Modernisation programme. This programme is part of the wider EU VAT in the Digital Age (ViDA) reform.
While Phase One focuses on large corporates, these changes will affect all businesses operating in Ireland.

What Is VAT Modernisation?

VAT modernisation is Revenue’s move towards digital VAT reporting and structured e-invoicing. The goal is to improve accuracy, transparency, and efficiency in VAT compliance.
Under the EU’s ViDA Directive, businesses will move away from paper invoices and PDFs. Instead, invoices must be issued in structured electronic formats that allow automated processing.
Importantly, e-invoices must follow the European Standard EN16931. This standard ensures invoices follow a consistent, structured format across the EU. Formats such as XML will meet the requirement. Unstructured formats, including PDFs or scanned paper invoices, will not meet VAT compliance rules.
This shift forms a core part of VAT modernisation in Ireland and reflects a broader EU-wide approach to VAT reform.
Revenue previously outlined its proposed approach in October 2025. This was set out in its report, VAT Modernisation: Implementation of eInvoicing in Ireland. The current update builds on that roadmap.

VAT Modernisation Phase 1: Who Is Affected?

Phase One will apply to VAT-registered businesses. Specifically, it applies to those managed by Revenue’s Large Corporates Division (LCD). These businesses must be established in Ireland or have a fixed establishment here.
From 1 November 2028, businesses within scope must:
• Issue structured electronic invoices for domestic business-to-business (B2B) transactions
• Submit a defined set of transaction data directly to Revenue
Revenue has confirmed that it will contact affected large corporates directly in the coming weeks. This will formally notify them of their inclusion in Phase One. It has also indicated that it is considering whether agents may be copied on these communications.

 

What Businesses Need to Do Now

Revenue is encouraging businesses within scope to begin preparations as soon as possible.
Key steps include:
• Assessing whether existing systems can issue and receive structured e-invoices
• Engaging early with software providers to ensure technical readiness
• Planning necessary system, process, and data changes well in advance
Early preparation will reduce pressure closer to the implementation date. It will also allow time for system testing and internal training.

VAT Modernisation in Ireland Will Affect All Businesses

It is important not to assume that these changes only apply to large corporates.
Under Revenue’s implementation plan, all businesses in Ireland must be capable of receiving structured eInvoices by 1 November 2028, even if they are not included in Phase One.
This means every business will need to review its systems and ensure it can accept invoices in a structured format. Over time, VAT modernisation in Ireland will require changes across the full business community.
Revenue has confirmed that engagement will continue as VAT Modernisation and ViDA move forward. It will involve businesses, professional bodies, software providers, industry representatives and other stakeholders. Further updates are expected as the programme develops.

Why Early Planning Matters

VAT modernisation in Ireland represents a significant operational change. Businesses that act early will have more time to:
• Assess system readiness
• Budget for upgrades
• Implement process changes
• Train staff
Businesses can benefit from professional accounting support. It helps them understand their obligations, review requirements, and plan for compliance in a clear and structured way.
If you have questions about VAT Modernisation or ViDA, Revenue has provided a dedicated contact point. Email [email protected].
At Cronin, our taxation accounting team supports businesses through every stage of VAT change. We provide clear, practical advice on systems, processes, and compliance planning. Explore our website to learn how we can help your business prepare for modernisation with confidence.