Iowa Admin. Code r. 701-207.1
"Gross revenue from sales" means all revenue from Iowa sales.
"Iowa sales" means the same as defined in Iowa Code section 423.14A(1)"a" and includes all retail sales, whether taxable or exempt, and other sales of tangible personal property, specified digital products, or services otherwise sold into Iowa or for delivery into Iowa, including wholesale or sale for resale. "Iowa sales" includes sales made through a marketplace.
"Marketplace" means any physical or electronic place, including but not limited to a store, booth, Internet website, catalog, television or radio broadcast, or dedicated sales software application, where a marketplace seller sells or offers for sale tangible personal property, or specified digital products, or where services are offered for sale into Iowa regardless of whether the tangible personal property, specified digital product, marketplace seller, or marketplace has a physical presence in Iowa.
"Physical presence in Iowa" means the activities described in Iowa Code section 423.1(48)"a"(1).
"Remote seller" means a retailer that does not have a physical presence in Iowa but that makes sales of tangible personal property, specified digital products, or services that are sourced to Iowa.
"Retailer" means the same as defined in Iowa Code section 423.1(47). "Retailer" includes a marketplace facilitator that meets or exceeds the sales threshold and includes a remote seller.
"Sales threshold" means the revenue level that triggers collection and remittance obligations for Iowa sales tax and local option tax as described in Iowa Code section 423.14A(3): $100,000 or more in gross revenue from Iowa sales into Iowa in either the current or immediately prior calendar year.
Iowa Admin. Code r. 701-207.1