Ark. Code Ann. § 8-6-811

Bonds issued under the provisions of this subchapter and the interest thereon shall be exempt from all state, county, and municipal taxes, including property, income, inheritance, and estate taxes. Provided, however, that nothing in this subchapter shall preclude a regional solid waste management district from requesting the Arkansas Development Finance Authority to issue taxable bonds in furtherance of the purposes of this subchapter, on such terms as the district and the authority deem advisable and in conformity with the authority's statutory authority for issuance of such taxable bonds.