Indiana Code Title 6. Taxation § 6-6-5.1-10

(1) Recreational vehicles.

(2) Truck campers.

(1) instead of the ad valorem property tax levied for state or local purposes;  and

(2) in addition to any registration fees imposed on recreational vehicles.

(1) for recreational vehicles, at the time the recreational vehicle is registered;  and

(2) for truck campers, on or before the owner's annual registration date for vehicles determined by the bureau on the schedule established under IC 9-18.1-11-1.

(1) registration year immediately preceding the current registration year;

(2) current registration year;  and

(3) registration year immediately following the current registration year.