The annual Arkansas Sales Tax Holiday can be a help to families sending children back to school, but a little planning can help shoppers save more and prevent unwelcome surprises at checkout, said extension family and consumer science experts This year's sales tax holiday begins this Saturday at 12:01 a.m. and continues through Sunday at 11:59 p.m. State and local sales taxes will not be collected on the purchase of certain products. All retailers are required to participate. "The sales tax holiday covers clothing, footwear, school supplies, art supplies and instructional materials,&...