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What is TAC?

Transaction Authorisation Code (TAC) is an online/mobile banking security feature to protect your account from unauthorised use. A TAC will be sent to you through one of the following methods to verify that you are the rightful person performing the transaction:


  • SecureTACTM (Mandatory for all CIMB Clicks mobile app transaction)

  • TAC via SMS

  • TAC via Messenger

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