(a) An out-of-state vendor has substantial nexus with this state for the collection of both state and local use tax if:

(1) The out-of-state vendor and an in-state business maintaining one or more locations within this state are related parties; and

(2) The out-of-state vendor and the in-state business use an identical or substantially similar name, tradename, trademark, or goodwill, to develop, promote, or maintain sales, or the in-state business and the out-of-state vendor pay for each other's services in whole or in part contingent upon the volume or value of sales, or the in-state business and the out-of-state vendor share a common business plan or substantially coordinate their business plans, or the in-state business provides services to, or that inure to the benefit of, the out-of-state business related to developing, promoting, or maintaining the in-state market.

(b) An out-of-state vendor that is an eligible seller participating in the Simplified Sellers Use Tax Remittance Program, as these terms are defined in Section 40-23-191, that establishes a substantial nexus in this state only through the acquisition of an in-state business and thereafter meets the provisions of subsection (a) may elect to satisfy the requirements to collect and remit tax for the out-of-state vendor's Alabama sales by continued participation in the Simplified Sellers Use Tax Remittance Program.

(c) Two entities are related parties under this section if one of the entities meets at least one of the following tests with respect to the other entity:

(1) One or both entities is a corporation, and one entity and any party related to that entity in a manner that would require an attribution of stock from the corporation to the party or from the party to the corporation under the attribution rules of Section 318 of the Internal Revenue Code owns directly, indirectly, beneficially, or constructively at least 50 percent of the value of the corporation's outstanding stock;

(2) One or both entities is a limited liability company, partnership, estate, or trust and any member, partner, or beneficiary, and the limited liability company, partnership, estate, or trust and its members, partners, or beneficiaries own directly, indirectly, beneficially, or constructively, in the aggregate, at least 50 percent of the profits, or capital, or stock, or value of the other entity or both entities; or

(3) An individual stockholder and the members of the stockholder's family, as defined in Section 318 of the Internal Revenue Code, owns directly, indirectly, beneficially, or constructively, in the aggregate, at least 50 percent of the value of both entities' outstanding stock.