Iowa Administrative Code Title 701 — Department of Revenue
Iowa Admin. Code r. 701—285.1(423) — Auctioneers as agents
285.1(1) An auctioneer in making a sale, whether of tangible personal property, specified digital products, or realty, is by virtue of this employment making the sale as the agent of the principal. 285.1(2) Where an auctioneer is conducting a sale and the principal meets the requirement of the casual sale exemption found in Iowa Code section 423.3(39), the sales price from the sale is exempt from sales tax.
Source: official text