"Marketplace facilitator" means a person that contracts with a marketplace seller to facilitate, for consideration and regardless of whether such consideration is deducted as fees from transactions, the sale of such marketplace seller's products through a physical or electronic marketplace operated by such person. "Marketplace facilitator" does not include a payment processor business appointed by a merchant to handle payment transactions from various channels, such as credit cards and debit cards, and whose sole activity with respect to marketplace sales is to handle transactions between two parties. "Marketplace facilitator" does not include a platform or forum that exclusively provides internet advertising services, including any advertisements that may list products for sale, so long as such platform or forum does not also engage directly or indirectly through one or more commonly controlled persons, as defined in subsection D of § 58.1-612, in the activities described in subsection C.
"Marketplace seller" means a person that is not a commonly controlled person, as defined in subsection D of § 58.1-612, to a marketplace facilitator and that makes sales through any physical or electronic marketplace operated by such marketplace facilitator, even if such seller would not have been required to collect and remit sales and use tax had the sale not been made through such marketplace.
Va. Code § 58.1-612.1