Mandatory e-invoicing in Ireland starts on 1 November 2028 for VAT-registered large corporates, and from that date every business in Ireland must be able to receive structured e-invoices. Businesses that sell to VAT-registered customers in other EU countries at 0% follow in November 2029, and the EU-wide ViDA rules for cross-border B2B sales apply from 1 July 2030. A PDF invoice will not count.

Key facts

• 1 November 2028: VAT-registered large corporates must issue e-invoices for domestic B2B sales and report a subset of the data to Revenue in real time.
• 1 November 2028: all businesses in Ireland must be able to receive structured e-invoices.
• November 2029: the domestic obligation extends to VAT-registered businesses that trade B2B with other EU countries under the 0% arrangements.
• 1 July 2030: EU ViDA rules apply to all cross-border EU B2B transactions, with invoices due within 10 days and data reported per transaction.
• EN 16931: the European standard every e-invoice must follow. PDFs and scanned paper invoices do not qualify.
• 6 years: how long VAT records must be kept, and that will include e-invoice files.

What is e-invoicing in Ireland?

An e-invoice is an invoice issued, transmitted and received in a structured electronic format, such as XML, that software can read automatically. Revenue and the EU directive both require it to follow European Standard EN 16931.

An invoice emailed as a PDF is electronic, but it is not an e-invoice. Revenue says that PDF invoices and scanned paper invoices will not meet the requirement.

Alongside the e-invoice comes "real-time reporting". Revenue describes this as sending a subset of relevant data from each e-invoice to the tax authority as the transaction happens, instead of only reporting totals on a periodic VAT return.

Revenue also says the change is about invoicing and reporting only. Tax rates, payment requirements and how VAT liability is calculated stay the same.

What is ViDA and what does it change?

ViDA (VAT in the Digital Age) is Council Directive (EU) 2025/516, adopted on 11 March 2025 and published in the Official Journal on 25 March 2025. It amends the main EU VAT Directive in stages between 2025 and 2030.

Domestic e-invoicing is now a national choice

Since 14 April 2025, member states can require businesses established in their territory to issue e-invoices for domestic sales without first asking the EU for permission. Ireland's domestic phases in 2028 and 2029 use this option.

Cross-border EU sales from 1 July 2030

From 1 July 2030 the directive sets these rules for intra-EU B2B transactions:

• E-invoices are the default and must follow EN 16931. A customer cannot refuse a compliant e-invoice.
• For zero-rated goods sent to another member state, and for B2B services where the customer pays the VAT under the reverse charge, the invoice must be issued no later than 10 days after the chargeable event.
• The supplier transmits the invoice data for each transaction to its own tax authority when the invoice is issued. The customer reports its side no later than 5 days after receiving the invoice.
• The data includes the usual invoice details plus new items such as bank account details.
• The recapitulative statement (the VIES return in Ireland) is abolished, because the per-transaction reports replace it.
• The 0% rate on an intra-EU supply of goods will not apply if the supplier has not reported the transaction correctly, unless it can justify the shortcoming to the tax authority.

Member states that had a domestic real-time reporting system on 1 January 2024 (or had legislated or been authorised for one before then) have until 1 January 2035 to align it with the EU rules. Ireland did not have one, so that later deadline does not apply here.

What is Revenue's e-invoicing roadmap?

Revenue set out its plan in "VAT Modernisation: Implementation of eInvoicing in Ireland", published on 8 October 2025 following the Budget 2026 speech. The latest version of the timeline is Revenue's VAT Modernisation Timeline page, published on 20 July 2026, which keeps the same three phases.

Who counts as a large corporate?

Revenue defines a large corporate as a VAT-registered business whose tax affairs are managed by Revenue's Large Corporates Division and which is established, or has a fixed establishment, in Ireland. On 10 February 2026 Revenue said it would write to these businesses to confirm they are in Phase 1.

What about purely domestic small businesses?

Revenue has not announced a date for smaller businesses that trade only in Ireland to start issuing e-invoices. They still have to be able to receive e-invoices from 1 November 2028, because a supplier in Phase 1 can send them one.

What is confirmed and what is still being designed?

Confirmed: the ViDA directive and its dates are EU law. Revenue has published the three phases, the large corporate definition and the EN 16931 requirement.

Not yet published (as of 3 October 2026):

• the technical specifications and the exact data subset to be reported to Revenue
• the exact day in November 2029 for Phase 2
• whether Phase 2 covers businesses that sell only services to EU customers under the reverse charge, as Revenue's wording refers to the 0% arrangements
• the Irish legislation for the domestic phases

Revenue's next-steps page (20 July 2026) says it is working with the European Commission and other member states "to finalise an approach". Its October 2025 paper says detailed guidance and specifications will come "well in advance of each implementation phase", and that it will use existing infrastructure such as Peppol, already used for public sector e-invoicing. Check after Budget 2027 (6 October 2026), and the Finance Bill that follows it, for any Irish legislation.

Worked example: a small Louth firm with an EU customer

Take a fictional company, Boyne Components Ltd, a small VAT-registered Louth engineering firm. It is not a large corporate. In one month it makes two sales.

Sale 1, to a VAT-registered customer in Germany. Goods worth €12,300 are shipped to Germany. With the customer's valid German VAT number, the supply is zero-rated.

• Net: €12,300
• VAT at 0%: €0
• Invoice total: €12,300

Sale 2, to a VAT-registered business in Dundalk. Goods worth €10,000 at the standard rate of 23%.

• Net: €10,000
• VAT: €10,000 x 23% = €2,300
• Invoice total: €10,000 + €2,300 = €12,300

Same total, different treatment as each phase arrives:

The VAT owed does not change in any phase: €2,300 on Sale 2 and €0 on Sale 1. What changes is the format of the invoice and when Revenue sees the data. Because Boyne makes zero-rated EU sales, it is likely to be in Phase 2, about eight months before the EU deadline.

What should a small business do now?

There is no need to buy new systems before Revenue publishes its specifications.

1. Ask your software provider. Can your accounting or invoicing package create and receive EN 16931 e-invoices, for example over Peppol, and what is their timeline for Ireland?
2. Work out your phase. If you sell goods at 0% to VAT-registered EU customers, plan for November 2029. If you only sell in Ireland, plan to receive e-invoices by 1 November 2028.
3. Clean your customer and supplier records. Use full legal names, addresses and VAT numbers with country prefix. Check EU customers' numbers on VIES; a wrong number already puts the 0% rate at risk.
4. Tidy your invoices. One unbroken number sequence, clear descriptions, the correct VAT rate on each line and your bank details on every invoice.
5. Set up an inbox for supplier e-invoices. Know who will receive and approve them.
6. Plan your archive. VAT records must be kept for six years. Keep the structured e-invoice file, not just a printout.
7. Review how you invoice EU customers. The 10-day issuing rule from 1 July 2030 is tighter than many small firms work to now.

For background on registering, see our guide to the VAT registration threshold in Ireland. Good invoice data also helps if Revenue ever calls, as covered in our Revenue audit and compliance intervention guide.

What M.A. Whately can do

We can help you work out which phase applies to your business, review your invoicing and records, and plan a calm move to e-invoicing with your software provider. Read about our tax services, try the free automation discovery tool to see where your invoicing can be automated, or book a chat.

Frequently asked questions

Is a PDF invoice an e-invoice in Ireland?

No. Revenue says PDF invoices and scanned paper invoices will not meet the requirement. An e-invoice must be in a structured format, such as XML, that follows European Standard EN 16931.

Do small businesses have to send e-invoices from November 2028?

Only VAT-registered large corporates managed by Revenue's Large Corporates Division must issue e-invoices from 1 November 2028. From that date every business in Ireland must be able to receive them.

When do I have to issue e-invoices if I sell to EU customers?

Revenue's Phase 2 extends domestic e-invoicing and real-time reporting to VAT-registered businesses in cross-border EU B2B trade under the 0% arrangements in November 2029. The EU rules for the cross-border invoices themselves apply from 1 July 2030.

Will the VIES return stop?

Yes, under ViDA. From 1 July 2030 the recapitulative statement, filed in Ireland as the VIES return, is replaced by per-transaction digital reporting.

Will e-invoicing change the VAT I pay?

No. Revenue says tax rates, payment requirements and how VAT liability is calculated stay the same. Only the invoice format and the timing of reporting change.

Has Revenue published the technical specifications?

Not as of 3 October 2026. Revenue says it will publish detailed guidance and technical specifications well in advance of each phase, and posts updates on its ViDA and VAT modernisation pages.

Last checked: 3 October 2026. Written by the M.A. Whately team. This guide is general information, not advice for your situation; talk to us before acting on it.

Sources

• Revenue: VAT Modernisation Timeline (published 20 July 2026), checked 2026-10-03
• Revenue: VAT Modernisation, Implementation of eInvoicing in Ireland (published 8 October 2025), checked 2026-10-03
• Revenue press release: Revenue confirms large corporates for Phase One of VAT Modernisation (10 February 2026), checked 2026-10-03
• Revenue: Large corporates for Phase One of VAT modernisation, checked 2026-10-03
• Revenue: Next steps for VAT in the Digital Age (ViDA), checked 2026-10-03
• Revenue: ViDA implementation timeline, checked 2026-10-03
• Council Directive (EU) 2025/516 (ViDA), checked 2026-10-03
• Revenue: How long do you keep records for?, checked 2026-10-03
• Revenue: Current VAT rates, checked 2026-10-03
• Revenue Tax and Duty Manual: Substantive requirements for zero-rating intra-Community supplies, checked 2026-10-03