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Country guide

Cocos (Keeling) Islands

Cocos (Keeling) Islands are an external territory of Australia; Australian Tax File Numbers (TFNs) and Australian Business Numbers (ABNs), as modelled in the Australia file, are the relevant tax identifiers. Use Australia (AU) validation rules.

CC CCK TIN guidance Last reviewed 2026-05-14
TIN status

No separate local TIN format is published for validation.

  • 1 No separate Cocos (Keeling) Islands TIN namespace was identified in official sources.
  • 2 The Australia file should contain the detailed TFN and ABN validation logic.