Ind. Code § 6-6-1.1-903
(a) A person is entitled to a refund of gasoline tax paid on gasoline purchased or used for the following purposes:
(8) Used to create racing fuel and the fuel:
(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.
As added by Acts 1979, P.L.79, SEC.1. Amended by Acts 1979, P.L.71, SEC.12; Acts 1980, P.L.51, SEC.42; Acts 1981, P.L.93, SEC.5; P.L.97-1987, SEC.10; P.L.2-1991, SEC.40; P.L.1-1991, SEC.58; P.L.210-2005, SEC.2; P.L.204-2016, SEC.27.