The Brief Texas' annual Sales Tax Holiday runs from Friday, Aug. 7, through midnight Sunday, Aug. 9, applying to in-store, online, and mail-order purchases. Texans can save on back-to-school shopping as early as Friday, as the state's annual Sales Tax Holiday returns for the weekend. During the holiday weekend, shoppers can buy many clothing items, school supplies and backpacks without paying state or local sales taxes. When is the Texas Sales Tax Holiday? Texas Sales Tax Holiday rulesDig deeper:A complete list of qualifying and non-qualifying clothing, footwear and school supplies is available at TexasTaxHoliday.org.