Mandatory Master File and Local File
January 1, 2025

Mandatory Master File and Local File
Since April 2023, UK entities in multinational groups with global revenues ≥€750 million must prepare Master and Local Files aligned with OECD standards and hold them contemporaneously with their tax returns. Applies to accounting periods from April 1, 2023.
Source:
OECD Transfer Pricing Country Profile: UK