Ireland Sets Phased Timeline for VAT Modernisation and Mandatory E-Invoicing

Ireland has explained the phased implementation of its VAT Modernisation programme, beginning on 1 November 2028, when VAT-registered large corporates must issue structured e-invoices for domestic B2B transactions and report selected data to Revenue in real time. From the same date, all Irish businesses must be able to receive and process structured e-invoices, while the obligations will expand in November 2029 and align fully with EU ViDA requirements from July 2030.

Ireland has published a phased timeline for implementing its VAT Modernisation programme, with the first mandatory e-invoicing requirements starting on 1 November 2028. VAT Modernisation is Ireland’s gradual transition to structured electronic invoicing and digital reporting of VAT transaction data. The initiative, which was already presented on an official Irish government website in 2025, is intended to align the Irish VAT system with the EU’s VAT in the Digital Age framework and reduce manual work, reporting errors and VAT fraud.

Phase One starts in November 2028

From 1 November 2028, VAT-registered large corporates established or having a fixed establishment in Ireland will be required to:

• issue structured e-invoices for domestic business-to-business transactions
• report selected invoice data to the Irish Revenue in real time.

For this purpose, a large corporate is a VAT-registered business whose tax affairs are managed by Revenue’s Large Corporates Division. An e-invoice must be issued, transmitted and received in a structured format that supports automated processing and complies with the European standard EN 16931. PDF invoices, scanned paper invoices and other unstructured formats will not qualify as e-invoices. A particularly important change is that, from the start of Phase One, all businesses in Ireland must be technically capable of receiving and processing structured e-invoices, even when they are not yet required to issue them.

Further phases planned for 2029 and 2030

In November 2029, the domestic obligation will be extended to VAT-registered businesses engaged in cross-border EU B2B transactions subject to zero-rated VAT arrangements. From July 2030, the EU ViDA requirements for cross-border B2B transactions will become mandatory across all EU Member States. Irish businesses already using the domestic e-invoicing system will then transition to the EU-wide requirements.

Businesses should begin preparing

Large corporates expected to fall within Phase One should review their invoicing, accounting and ERP systems, assess the quality of their customer and supplier data and discuss technical readiness with their software providers. They should also prepare internal teams and identify any necessary system upgrades.Revenue will contact businesses included in Phase One and plans to publish additional guidance, technical specifications and support materials as implementation progresses.