(1) "Accounts receivable" means an amount of state tax, penalty, or interest which has been recorded as due and entered in the account records or any ledger maintained in the department, or which a taxpayer should reasonably expect to become due as a direct or indirect result of any pending or completed audit or investigation, which a taxpayer knows is being conducted by any federal, state, or local taxing authority.

(2) "Final, due, and owing" means an assessment which has become final and is owed to the state due to either the expiration of the taxpayer's appeal rights or, in the case of an assessment which has been appealed, either pursuant to Chapter 13 of Title 50, the "Georgia Administrative Procedure Act," or pursuant to Code Section 48-2-59, the rendition of the final order by the commissioner or by any court of this state. Assessments that have been appealed shall be final, due, and owing 15 days after the last unappealed or unappealable order sustaining the assessment or any part thereof has become final. Assessments that have not been appealed shall be final, due, and owing 30 days after service of notice of assessment pursuant to Code Section 48-2-45.

(3) "Taxpayer" means any individual, partnership, joint venture, association, corporation, receiver, trustee, guardian, executor, administrator, fiduciary, or any other entity of any kind subject to any tax set forth in this title or any person required to collect any such tax under this title.