Sarah Webb and her children check out at the Nike Store as shoppers take advantage of a tax free weekend at The OKC Outlets in this 2012 file photo. The Outlets are expected to draw a big crowd for this year's tax-free holiday, which is set to occur this weekend. [PHOTO BY STEVE SISNEY, THE OKLAHOMAN ARCHIVES]

Shoppers, start your savings engines because the 2018 Oklahoma sales tax holiday is set to occur this weekend.

Beginning at 12:01 a.m. Friday, and ending at midnight Sunday, Oklahomans will be able to shop for many items with a temporary exemption from sales tax.

The weekend is one of the busiest shopping events of the year for some retailers.

“It's second to Black Friday,” OKC Outlets General Manager Jeannette Smith said. “It's very heavily trafficked, and right now our traffic is trending up so we are expecting more than last year.”