Delaware has a 0% sales tax year-round. New Jersey also permanently repealed its annual back-to-school sales tax holiday in 2024, which means the real financial relief lies with Delaware's no sales tax policy. Related articleShopping strategyWhat you can do:To maximize savings without wasting money on gas and tolls, parents should split up their back-to-school supplies list. Delaware famously has a 0% sales tax on everything, all year long. School supplies surgeBig picture view:Families are expected to spend nearly $175 on school supplies this year, according to data from Groundwork Collaborative.