Can I link more than one CPA, tax preparer or other third party to my tax accounts? Yes, multiple third parties may be linked to one account. May 27, 2018 14:43 Related articles As a third-party taxpayer representative, do I need separate logons for access to each of my clients? I am a CPA or tax preparer. How will I gain access to my clients’ accounts? What kinds of access exist in TNTAP? TNTAP: Gaining Access as a Third Party How do I manage additional login IDs?