Ark. Code Ann. § 26-24-111

The Arkansas Public Service Commission shall have the full power and authority in the administration of the tax laws of this state to require individuals, partnerships, associations, and corporations, and the agents, officers, and employees thereof, to furnish information concerning their capital, funded or otherwise, gross receipts, net profits or income, excess profits, current assets and liabilities, values or franchises, value of property, earnings, operating and other expenses, bonds, deeds, conduct of business, and all other facts, records, books, papers, documents, and other information of any kind or character demanded which may be useful, in order to enable the commission to ascertain the value and relative burden to be borne by every kind of property in this state.