Iowa Administrative Code Title 701 — Department of Revenue
Iowa Admin. Code r. 701—213.4(423) — Consignment sales
213.4(1) When a retailer receives tangible personal property on consignment from others and the consigned merchandise is sold in the ordinary course of business with other merchandise owned or services performed by the retailer, the retailer or consignee shall be making sales at retail. In these cases, the consignee shall file a return and remit tax to the department along with the returns and remittances of tax on the sales price from the sale of other merchandise. 213.4(2) The sales price of sales of tangible personal property by an agent or consignee for another person is exempt if the sales meet the requirements of a casual sale or any other exemptions.
Source: official text