Sec. 903. (a) A person is entitled to a refund of gasoline tax paid on gasoline purchased or used for the following purposes:
(1) Operating stationary gas engines.
(2) Operating equipment mounted on motor vehicles, whether or not operated by the engine propelling the motor vehicle.
(3) Operating a tractor used for agricultural purposes.
(3.1) Operating implements of agriculture (as defined in IC 9-13-2-77).
(4) Operating motorboats or aircraft.
(5) Cleaning or dyeing.
(6) Other commercial use, except propelling motor vehicles operated in whole or in part on an Indiana public highway.
(7) Operating a taxicab (as defined in section 103 of this chapter).
(8) Used to create racing fuel and the fuel:
(A) consists of a fuel blend nominally consisting of more than eighty-nine percent (89%) ethanol and less than eleven percent (11%) gasoline;
(B) will not be blended to become a fuel that can be used for propelling a motor vehicle operated in whole or in part on an Indiana public highway; and
(C) will be resold by the person purchasing the fuel to a purchaser that is located in another state, territory, or foreign country.
(b) If a refund is not issued within ninety (90) days of filing of the verified statement and all supplemental information required by IC 6-6-1.1-904.1, the department shall pay interest at the rate established by IC 6-8.1-9 computed from the date of filing of the verified statement and all supplemental information required by the department until a date determined by the administrator that does not precede by more than thirty (30) days the date on which the refund is made.