As used in this title, the term:

(1) "Agency" means any department, commission, institution, office, or officer of this state.

(2) "Aircraft" means any contrivance used or designed for navigation or flight through the air.

(3) "Airline company" means any person who undertakes, directly or indirectly, to engage in the scheduled transportation by aircraft of persons or property for hire in intrastate, interstate, or international transportation.

(4) "Commissioner" means the state revenue commissioner.

(5) "Contraband article" means:

(A) Any unauthorized, false, forged, altered, or counterfeit revenue stamp or marking, prima facie evidencing the payment of any tax imposed by the revenue laws of this state;

(B) Any article, plate, die, stamp, machine, apparatus, paraphernalia, or other device or material designed for use, intended to be used, or used in the making of any unauthorized, false, forged, altered, or counterfeit revenue stamp or marking described in subparagraph (A) of this paragraph; or

(C) Any article or property to which any unauthorized, false, forged, altered, or counterfeit revenue stamp or marking prima facie evidencing the payment of any tax imposed by the revenue laws of this state is attached or affixed.

(6) "Department" means the Department of Revenue.

(7) "Deputy commissioner" means the deputy revenue commissioner.

(8) "Domestic," when applied to any corporation or association (including, but not limited to, a partnership), means created, organized, or domiciled in this state.

(9) "Fiduciary" means a guardian, trustee, executor, administrator, receiver, conservator, or any person, whether individual or corporate, acting in any fiduciary capacity for any person.

(10) Reserved.

(11) "Foreign," when applied to any corporation or association (including, but not limited to, a partnership), means created or organized outside this state.

(12) "Individual" means a natural person.

(13) "Intangible personal property" means the capital stock of all corporations; money, notes, bonds, accounts, or other credits, secured or unsecured; patent rights, copyrights, franchises, and any other classes and kinds of property defined by law as intangible personal property. (14) "Internal Revenue Code" or "Internal Revenue Code of 1986" means the United States Internal Revenue Code of 1986 provided for in federal law enacted on or before January 1, 2001. In the event a reference is made in this title to the Internal Revenue Code or the Internal Revenue Code of 1954 as it existed on a specific date prior to January 1, 2001, the term means the Internal Revenue Code or the Internal Revenue Code of 1954 as it existed on the prior date. Unless otherwise provided in this title, any term used in this title shall have the same meaning as when used in a comparable provision or context in the Internal Revenue Code of 1986.

(15) "Internal Revenue Service" or "IRS" means the Internal Revenue Service of the United States Department of the Treasury.

(16) "Member of the armed forces" means commissioned officers and personnel below the grade of commissioned officers in all regular and reserve components of the uniformed services subject to the jurisdiction of the United States Department of Defense. The term also includes the Coast Guard, but it does not include civilian employees of the armed forces.

(17) "Municipality" means an incorporated municipality in this state.

(18) "Person" means any individual, firm, partnership, cooperative, nonprofit membership corporation, joint venture, association, company, corporation, agency, syndicate, estate, trust, business trust, receiver, fiduciary, or other group or combination acting as a unit, body politic, or political subdivision, whether public, private, or quasi-public.

(19) "Personal property" means all tangible personal property and all intangible personal property, as the terms are defined in this Code section.

(20) "Personal representative" means the duly qualified and acting personal representative of the estate of a decedent or, if there is no duly qualified and acting representative, the person in possession of any property of the decedent.

(21) "Public utility" means all railroad companies, street and suburban railroads, or sleeping car companies; persons or companies operating railroads, street railroads, suburban railroads, or sleeping cars in this state; all express companies including railroad companies doing express, telephone, or telegraph business (except small telephone companies or persons operating a telephone business, the value of whose capital stock or property is less than $5,000.00); all gas, electric light, electric power, hydroelectric power, steam heat, refrigerated air, dockage or cranage, canal, toll road, toll bridge, railroad equipment, and navigation companies; and any person or persons operating a gas, electric light, electric power, hydroelectric power, steam heat, refrigerated air, dockage or cranage, canal, toll road, toll bridge, railroad equipment, or navigation business, through their president, general manager, owner, or agent having control of the company's offices in this state.

(22) "Tangible personal property" means personal property which may be seen, weighed, measured, felt, or touched or which is in any other manner perceptible to the senses. The term "tangible personal property" shall not include intangible personal property. This paragraph shall not apply to Chapter 8 of this title relating to sales and use taxation.

(23) "Tax collector" means a county tax collector.

(24) "Tax commissioner" means a county tax commissioner.

(25) "Taxpayer" means any person required by law to file a return or to pay taxes.

(26) "Tax receiver" means a county tax receiver.