GIR MCAA aims to simplify the automatic exchange of GloBE information between tax authorities and ease compliance for multinational enterprise (MNE) groups by allowing centralised filing of the GloBE Information Return.

The Organisation for Economic Cooperation and Development (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 2 February 2026.

Australia is the latest signatory to the GIR MCAA, signing on 28 January 2026.

The agreement aims to streamline the automatic exchange of GloBE information among tax administrations and reduce compliance burdens for multinational enterprise (MNE) groups by enabling centralised filing of the GloBE Information Return.

A key part of the OECD/G20 BEPS Project is addressing the tax challenges arising from the digitalisation of the economy. In October 2021, over 135 jurisdictions joined a plan to update key elements of the international tax system, which is no longer fit for purpose in a globalised and digitalised economy.

The Global Anti-Base Erosion Rules (GloBE) are a key component of this plan and ensure large multinational enterprises pay a minimum level of tax on the income arising in each of the jurisdictions where they operate.