E-Invoicing in Ireland
Mandatory Electronic Invoicing in Ireland
Learn how to get your company ready to exchange documents in accordance with Ireland requirements with the support of Comarch

Ireland Is on the Road to e‑Invoicing
Currently, all public institutions must be able to receive and manage electronic invoices. Ireland has chosen Peppol as the method of delivery for e-invoices to the public sector. The issuance of e-invoices by suppliers remains voluntary.
For now, e-invoicing for B2B transactions remains voluntary. Under its “VAT Modernisation” program, Ireland is introducing mandatory domestic B2B e-invoicing with real-time digital reporting, ahead of the EU VAT in the Digital Age (ViDA) requirements in 2030. The legal framework is set out in the Finance (No. 2) Bill 2026, published on October 19, 2026, which amends the VAT Consolidation Act 2010 and is still going through the legislative process. In October 2026, Revenue also published an updated implementation paper and draft regulations, and launched a dedicated eInvoicing Hub.

Implementation timeline
- Phase 1 (November 1, 2028): VAT-registered businesses managed by Revenue’s Large Corporates Division on January 1, 2027, and established (or with a fixed establishment) in Ireland, must issue structured e-invoices for domestic B2B transactions and report invoice data to Revenue in real time. This covers approximately 2,400 businesses. From the same date, all businesses in Ireland must be able to receive e-invoices.
- Phase 2 (November 1, 2029): The domestic obligation extends to VAT-registered businesses established in Ireland that engage in intra-EU B2B trade, and to businesses managed by the Large Corporates Division on January 1, 2028. This timing is intended to give affected businesses time to familiarise themselves with the new arrangements domestically before the EU-wide system (ViDA) becomes mandatory.
- Phase 3 (July 1, 2030): Full implementation of EU ViDA requirements for all cross-border EU B2B transactions will become mandatory across all Member States. Irish businesses already operating under the domestic system will transition to meet these EU obligations.

E-invoicing process description
Ireland will use a Peppol-based five-corner model. The supplier’s system sends the e-invoice through a Peppol service provider to the buyer’s service provider, while a defined subset of invoice data is reported to Revenue at the time of issue. Peppol will be the default network for exchanging e-invoices and the mandatory channel for reporting data to Revenue. Trading partners may agree to use other compliant formats or networks for the exchange itself, but not for reporting. Revenue intends to become Ireland’s Peppol Authority from January 1, 2027.

Who is obliged to use e-invoicing in Ireland?
- Public Sector (B2G): Mandatory for public bodies to receive; voluntary for suppliers.
- Large Corporates (B2B): Mandatory issuance and real-time reporting from November 2028.
- Intra-EU Traders: Mandatory starting November 1, 2029.
- All Businesses: Mandatory receiving capability from November 1, 2028.
B2C transactions are not covered by the mandate, and no new point-of-sale reporting obligations are introduced.

What Is the Required Format of an e-Invoice?
A structured e-invoice compliant with the European standard EN 16931. PDF invoices sent by email, scanned documents, and Word files will not qualify. Detailed technical specifications (schemas and validation rules) have not yet been published.

How Can We Help
Comarch supports the exchange of documents via EDI, as there’s currently no mandate for B2B transactions. As a certified Peppol Access Point, Comarch is preparing a dedicated solution for the 2028 mandate and will finalize it once Revenue publishes the technical specifications. For B2G, Comarch supports e-invoicing via Peppol.
Why is Comarch the best choice?
We have 20+ years of experience in carrying out various EDI, e-invoicing, and other document exchange projects around the world. In those years, we have successfully connected more than 130,000 entities from over 60 countries.
1. Legal compliance
Full compliance with the latest data exchange regulations and modern data transfer standards
2. Digitization
Applying new technologies and IT solutions in order to streamline workflows and automate activities and procedures
3. Individual approach
Tailor-made solutions based on processes specific to each company – own road map and a suitable pace of changes
4.Security
Highest level of security for all sensitive and important company data
Legal regulation changes in Ireland
Do you want to know more?
If your company is based or has branches in the Ireland and you need to prepare your billing and tax systems to comply with the new requirements. Click on the button below to get in touch with one of our experts.
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