Indiana Code Title 6. Taxation § 6-9-41-9

Sec. 9. (a) The county fiscal body may adopt an ordinance to require that the tax imposed under section 5 of this chapter be reported on forms approved by the county treasurer and that the tax be paid monthly to the county treasurer.  If an ordinance is adopted under this subsection, the tax shall be paid to the county treasurer not more than twenty (20) days after the end of the month in which the tax is collected.  If an ordinance is not adopted under this subsection, the tax shall be imposed, paid, and collected in exactly the same manner as the state gross retail tax is imposed, paid, and collected under IC 6-2.5.

(b) If an ordinance is adopted under this section, all of the provisions of IC 6-2.5 relating to rights, duties, liabilities, procedures, penalties, definitions, exemptions, and administration apply to the imposition and administration of the tax imposed under section 5 of this chapter, except to the extent those provisions are in conflict or inconsistent with the specific provisions of this chapter or the requirements of the county treasurer.

(c) For purposes of this chapter, the terms “person” and “gross retail income” have the same meaning in this section as set forth in IC 6-2.5, except that “person” does not include state supported educational institutions.  If the tax is paid to the department of state revenue, the returns to be filed for the payment of the tax under this section may be either a separate return or may be combined with the return filed for the payment of the state gross retail tax as the department of state revenue may by rule determine.