Pillar Two in Ireland
Ireland has implemented OECD Pillar Two through Taxes Consolidation Act 1997, Part 4A. Each applies to fiscal years beginning on or after the respective date: the IIR from 2023-12-31, the QDMTT from 2023-12-31, the UTPR from 2024-12-31.
Implementation Timeline
Each rule applies to fiscal years beginning on or after the date shown.
Quick reference
| Rule | Effective date | Status |
|---|---|---|
| IIR — Income Inclusion Rule | Fiscal years beginning on or after 2023-12-31 | In force OECD qualified |
| UTPR — Undertaxed Profits Rule | Fiscal years beginning on or after 2024-12-31 | In force OECD review pending |
| QDMTT — Qualified Domestic Minimum Top-up Tax Local name: Qualified Domestic Top-up Tax (QDTT) | Fiscal years beginning on or after 2023-12-31 | In force OECD qualified |
| QDMTT Safe Harbour | Available alongside the QDMTT | Case-by-case |
Implementing legislation
- Taxes Consolidation Act 1997, Part 4A — EU Directive 2022/2523 transposition. 2023-12-18 제정
- IIR · QDTT(QDMTT) — 2023-12-31 in force from fiscal years beginning on or after the date shown
- UTPR — 2024-12-31 in force from fiscal years beginning on or after the date shown
Practical implications
MNE groups parented in Ireland are subject to the IIR for fiscal years beginning on or after 2023-12-31. Where a subsidiary's jurisdictional effective tax rate (ETR) falls below 15%, top-up tax is computed and paid in Ireland (as the jurisdiction of the parent entities), and the group must also file the GloBE Information Return (GIR).
MNE groups with constituent entities in Ireland are subject to Ireland's QDMTT for fiscal years beginning on or after 2023-12-31. Where the conditions of the QDMTT Safe Harbour are met, the IIR/UTPR computation at the parent jurisdictions may be exempted, reducing the burden of dual computation.
Recent legislative developments
- 2023-12-18: Taxes Consolidation Act 1997 Part 4A 제정 — IIR · QDTT in force
Related terms
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- OECD Inclusive Framework — Updated Central Record for Purposes of the Global Minimum Tax, approved 2026-05-11 (current as at 2026-05-01). OECD Global Minimum Tax
- Revenue Commissioners — Ireland Tax Authority Pillar Two guidance. www.revenue.ie
- Irish Statute Book — Ireland legislation database — Taxes Consolidation Act 1997. www.irishstatutebook.ie
Disclaimer
This page is reference information prepared as of 2026-05-28 by synthesising the primary sources listed above, and is not legal or tax advice. Before applying any of this material in practice, please:
- Verify the latest legislation, administrative guidance, and tax authority notices
- Obtain review by a qualified Pillar Two specialist
- Reassess applicability against the specific facts and circumstances of the group
Translation note. The authoritative version of this page is the Korean original (국가별 현황 › 아일랜드). This English version is provided for accessibility and may not capture every nuance of the original sources. Where precision matters, please refer to the Korean original or to the source legislation in its original language.