(Undated) -- Halloween is big business for many retailers. According to the National Retail Federation, Americans will spend nearly $7 billion on the holiday this year.

RetailMeNot.com editor Trae Bodge says the group's survey shows 85 percent of all shoppers will use online coupons and comparison shopping to help hold down costs.

Bodge says the best time to find discounts on candy is just a day or two before Halloween. Nearly 160 million people across the country are buying or renting costumes, stocking up on treats and even dressing up their pets for the holiday.