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. October 18, 2018 19:55 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. Creating a TNTAP logon TNTAP: Add Access to Another Account What can I do on TNTAP?