Tennessee Retailers Are Gearing Up For This Year’s Sales Tax Holiday. From July 27th To The 29th, Shoppers Can Save Nearly 10-Percent On Clothing, School Supplies And Computers As Students Prepare For The Back-To-School Season. State And Local Taxes Will Not Be Collected On Clothing, School And School Art Supplies That Cost $100 Or Less Per Item And Computers That Cost 15-Hundred Dollars Or Less.