The OECD has released an updated list of signatories to the Multilateral Competent Authority Agreement on the Exchange of Global Anti-Base Erosion (GloBE) Information Returns, showing 36 participating jurisdictions as of 29 May 2026.
The Organisation for Economic Co-operation and Development (OECD), on 29 May 2026, released an updated list of signatories to the Multilateral Competent Authority Agreement on the Exchange of Global Anti-Base Erosion (GloBE) Information Returns (GIR MCAA), including the respective dates of signature.
The agreement facilitates the automatic exchange of GloBE Information Returns between tax authorities and reduces compliance costs for multinational enterprise groups by enabling centralised filing through a single system.
The GloBE Information Return is a standardised filing comprising two parts: a General Section covering the multinational group’s corporate structure and a broad overview of how the GloBE Rules apply to it, and one or more Jurisdictional Sections setting out the detailed application of the GloBE Rules and, where relevant, the Qualified Domestic Minimum Top-up Tax in each jurisdiction where the group operates.
GIR MCAA signatories as of 29 May 2026
| Jurisdiction | Date | Jurisdiction | Date |
| Australia | 28 Jan 2026 | Austria | 26 Jun 2025 |
| Barbados | 12 May 2026 | Belgium | 16 Jun 2025 |
| Canada | 6 Feb 2026 | Croatia | 24 Dec 2025 |
| Cyprus | 12 May 2026 | Czechia | 11 May 2026 |
| Denmark | 11 Jun 2025 | Finland | 30 Sep 2025 |
| France | 9 Jul 2025 | Germany | 19 Sep 2025 |
| Gibraltar | 14 Jan 2026 | Greece | 18 Mar 2026 |
| Hong Kong, China | 21 Apr 2026 | Hungary | 31 Oct 2025 |
| Ireland | 8 Jul 2025 | Isle of Man | 9 Apr 2026 |
| Italy | 30 Jun 2025 | Japan | 24 Jun 2025 |
| Korea (rep.) | 9 Jul 2025 | Liechtenstein | 29 Sep 2025 |
| Luxembourg | 26 Jun 2025 | Netherlands | 14 Aug 2025 |
| New Zealand | 8 Jul 2025 | Norway | 1 Sep 2025 |
| Portugal | 2 Jul 2025 | Romania | 9 Apr 2026 |
| Singapore | 14 Apr 2026 | Slovak Republic | 16 Jun 2025 |
| Slovenia | 22 Dec 2025 | South Africa | 2 Oct 2025 |
| Spain | 4 Jul 2025 | Sweden | 4 Nov 2025 |
| Switzerland | 28 Aug 2025 | UK | 1 Jul 2025 |
Earlier, the OECD published an updated list of signatories, including their signing dates, to the Multilateral Competent Authority Agreement on the Exchange of Global Anti-Base Erosion (GloBE) Information Returns (GIR MCAA) on 5 May 2026.