Shop Maryland Tax-Free Week 2018 is Sunday, Aug. 12-Saturday, Aug. 18. That means qualifying apparel and footwear $100 or less, per item, are exempt from the state sales tax. This year, the first $40 of a backpack or bookbag purchase is also tax-free. Accessory items, except for backpacks, are not included. Click on "more" to view a list of taxable and exempt items.