The commission is tasked with reviewing Indiana's antiquated alcohol laws.
Indiana Retail Council officials say having a tax holiday when people are preparing for their children to return to school helps businesses and their customers.
Advocates against Sunday sales say deregulation would hurt small liquor stores.
Traditional stores say e-commerce has an unfair advantage as consumers are exempt from paying sales tax on purchases from out of state.
A smartphone app is the latest front in the battle over collecting online sales taxes.