Ireland Confirms E-Invoicing Criteria for Large
Corporates in VAT Modernization Shift

The Irish Revenue has officially confirmed the scope and criteria for the first phase of its mandatory e-invoicing and digital reporting regime. Part of the broader “VAT Modernization” program, the announcement issued on February 10, 2026, identifies the specific group of large taxpayers that will lead the country’s transition to digital invoicing.

Phase One Definition and ScopeA business is classified as a “Large Corporate” for this initial phase if its tax affairs are managed by Revenue’s Large Corporates Division and it maintains a fixed establishment in Ireland. Impacted businesses can expect formal written notification from the tax authority in the coming weeks confirming their inclusion in Phase One.

Key Deadlines and Compliance StandardsStarting November 1, 2028, the following mandates will take effect:

• Mandatory Issuance: Large corporates must issue structured e-invoices compliant with the EN 16931 European standard for domestic B2B transactions. Traditional formats like PDFs or scanned paper will no longer fulfill legal requirements.
• Universal Reception: While only large companies must issue them initially, all businesses in Ireland must be technically capable of receiving structured e-invoices by this date.

Revenue has urged early preparation, noting that this shift represents a fundamental change in financial processes. Comprehensive support and technical specifications are expected to be provided throughout the multi-year transition.

https://www.revenue.ie/en/corporate/press-office/press-releases/2026/pr-021026-phase-one-vat-modernisation.aspx