Business accounts on CardUp can only be registered by business owners for a business they are currently managing, or its authorised employees. The business is required to have a valid Unique Entity Number (UEN), and is to be registered with ACRA.
Do note that payments processed on a CardUp for Business account is to be business-related, and personal payments are not permissible. CardUp may require additional documents from time to time to for account security and verification purposes.