After voicing his concerns about the plan to raise the package-liquor tax from 1 to 3 percent, Riggs Beer Company co-owner Darin Riggs asked that aldermen consider exempting his business. URBANA — A plan to increase the city's tax on package alcohol met resistance Monday night from the co-owner of a local brewery, who proposed that aldermen exempt his business if they move forward with it. Riggs Beer Company co-owner Darin Riggs made the proposal after voicing concerns about the plan to raise the tax from 1 to 3 percent. read more