Can I link more than one CPA, tax preparer or other third party to my tax accounts? Yes, multiple third party logons can have access to one account. May 04, 2019 17:50 Related articles TNTAP: Gaining Access as a Third Party Creating a TNTAP logon Will TNTAP lock me out after multiple unsuccessful attempts to login? What are the rules for creating a password in TNTAP? Do you have a logon, but can't see your account?