Tennessee Sales and Use Tax Returns for 2021 February 22, 2021 ...iCalFebruary 22, 2021March 22, 2021April 20, 2021May 20, 2021June 21, 2021July 20, 2021August 20, 2021September 20, 2021October 20, 2021November 22, 2021December 20, 2021January 20, 2022 Monthly filers need to have their TN Sales and Use Tax return for the 2021 Calendar year submitted by today.