One way that many states, including Iowa, pass along some savings is with a tax-free shopping weekend. Iowa is One of 18 States With a Sales Tax HolidayThe Des Moines Register reports that Iowa is one of 18 states with a sales tax holiday in 2026. So when is Iowa's tax-free holiday in 2026? The Register reports that this year, that falls on Friday, August 7th, and Saturday, August 8th. You can see a complete list of rules for the sales tax holiday from the Iowa Department of Revenue HERE.