TNTAP: Filing a Business Tax Return Watch this video to learn how to file your business tax return while you are logged into your TNTAP account. You may also follow these steps. April 15, 2019 21:43 Related articles How do I file business tax online? How do I renew my business licenses? My local clerk said I would have to renew through the Department of Revenue. TNTAP: Filing a Sales Tax Return What information do I need to create a TNTAP login or gain access to an account in TNTAP? Do you have a logon, but can't see your account?