Ireland ViDA E-Invoicing Phase One: Large Corporates from 1 November 2028

Revenue has confirmed Phase One of Ireland’s VAT modernisation e-invoicing programme begins on 1 November 2028. VAT-registered large corporates managed by Large Corporates Division must issue structured e-invoices for domestic business-to-business (B2B) supplies and report a subset of invoice data to Revenue. From the same date, all businesses in Ireland must be able to receive structured e-invoices — even if they are not yet required to issue them.

The programme prepares Ireland for the EU VAT in the Digital Age (ViDA) cross-border mandate from 1 July 2030. Revenue’s implementation materials and EY’s technical alert describe a three-phase path: domestic large-corporate issuance in November 2028, wider domestic obligations for intra-EU traders in November 2029, then full ViDA alignment in July 2030.

Revenue defines an eInvoice as an invoice issued, transmitted, and received in a structured electronic format that allows automated processing. It must comply with the European standard EN 16931. Unstructured PDFs or scanned paper do not qualify as e-invoices for this mandate.

Phase One issuers must also report selected invoice data to Revenue — a digital reporting layer alongside the invoice itself. Technical specifications and further guidance are still being published; Revenue invites queries to [email protected].

For SMEs that only buy from large corporates, the immediate obligation is receiving capability: accounting systems, email-to-ERP bridges, or access-point arrangements that can ingest EN 16931 structured invoices without manual rekeying.

For Phase One, a large corporate is a VAT-registered business whose tax affairs are managed by Revenue’s Large Corporates Division and that is established or has a fixed establishment in Ireland. Revenue will write to in-scope businesses to notify inclusion.

If you are not in Large Corporates Division, you are not required to issue domestic e-invoices in Phase One — but you still need to receive them from 1 November 2028. That affects almost every Irish VAT-registered trader that invoices or buys from large customers or suppliers.

Preparation checklist from Revenue includes reviewing ERP or accounting systems, confirming supply-chain master data, engaging software providers early, and training finance teams on the new workflows.

Ask your accountant and software vendor whether your stack can receive EN 16931 invoices and map them to purchase ledger entries. Do not wait until late 2028 to discover a PDF-only process.

Keep VAT returns and purchase invoices clean now — digital reporting makes inconsistencies easier for Revenue to spot. Use structured categories for Irish VAT rates (23%, 13.5%, 9%) and reconcile bi-monthly VAT early.

FinnAccountings helps Irish businesses organise bookkeeping, VAT prep drafts, and document workflows with Chartered Accountant insight before you or your adviser file with Revenue. Pair that with our free VAT calculator for rate checks, and start a free trial when you are ready to centralise prep.

For UK Peppol timing (April 2029), see our Peppol e-invoicing briefing. For Irish VAT return support, visit VAT Services Ireland and the free VAT calculator. Hospitality traders on the temporary 9% rate should also review our July 2026 hospitality VAT update.