Ind. Code § 6-6-4.1-6
(a) A carrier is entitled to a credit against the tax imposed under section 4 of this chapter if the carrier, or a lessor operating under the carrier's annual permit, has:
(b) The amount of credit for a quarter is equal to the tax paid under IC 6-6-1.1 , IC 6-6-2.5 , and section 4.5 of this chapter (before its repeal) on motor fuel that:
(d) A credit earned by a carrier in a particular quarter shall be applied against the carrier's tax liability under this chapter for that quarter before any credit carryover is applied against that liability under section 7 of this chapter.
As added by Acts 1982, P.L.59, SEC.1. Amended by P.L.77-1985, SEC.28; P.L.277-1993(ss), SEC.47; P.L.218-2017, SEC.52; P.L.185-2018, SEC.13.