COLUMBIA, S.C. (AP) _ Shoppers in South Carolina are about to their annual break from sales taxes.

The sales-tax holiday extends from 12:01 a.m. Friday to midnight Sunday. It shaves state and local sales taxes from clothes, computers and other back-to-school items. 

That means shoppers will save up to 8.5 percent, depending on local taxes. The state tax rate is 6 percent. In all, South Carolina shoppers are expected to save an estimated $3 million.

According to the Federation of Tax Administrators, 16 states are offering tax-free holidays this year, 12 of them this weekend, including neighboring Georgia. North Carolina ended its sales tax holiday last year.

While the weekend is touted as savings for back-to-school items, the list of exempt items can be confusing. While wedding dresses and diapers are exempt, iPads aren't.