1. (a) A vehicle subject to the International Registration Plan that is registered after the date designated for registration of the vehicle under IC 9-18-2-7 (before its expiration), under IC 9-18.1-13 , or under rules adopted by the department shall be taxed at a rate determined by the following formula:

   STEP ONE: Determine the number of months remaining until the vehicle's next registration date. A partial month shall be rounded to one (1) month.

   STEP TWO: Multiply the STEP ONE result by one-twelfth (1/12).

   STEP THREE: Multiply the annual excise tax for the vehicle by the STEP TWO product.

2. (b) A vehicle that is registered with the department under IC 9-18-2-4.6 (before its expiration) or IC 9-18.1-13-3 or the bureau after the date designated for registration of the vehicle under IC 9-18-2-7 (before its expiration) or IC 9-18.1 shall be taxed at a rate determined by the formula set forth in subsection (a).
3. (c) This subsection applies after December 31, 2016. A vehicle described in subsection (a) or (b) that has a renewal registration period described in IC 9-18.1-11-3 (b) shall be taxed at the annual excise tax rate for the vehicle's current registration period.

As added by P.L.181-1999, SEC.2. Amended by P.L.198-2016, SEC.49; P.L.257-2017, SEC.13.