tax-exempt
adjective uk/ˌtæks.ɪɡˈzempt/ us/ˌtæks.ɪɡˈzempt/
（产品、服务或金融协议）免税的，不收税的
used to describe a product, service, or financial arrangement on which no taxes have to be paid
The poorest families pay no tax on food because their food stamp purchases are tax-exempt. 最贫困的家庭不用在食品上缴税，因为他们用食品卷购买是免税的。
（个人或机构）免税的，不需缴税的
used to describe a person or an organization that does not have to pay tax
the tax-exempt status of college athletic departments 大学体育部门的免税资格