Indiana Code Title 6. Taxation § 6-6-4.1-24

Sec. 24. (a) If the department believes that a person has not reported the proper amount of tax due, the department shall make a proposed assessment of the amount of the unpaid tax on the basis of the best information available to the department. The amount of the assessment is:

(b) The department shall issue notice and prescribe a period for payment and protest under the provisions of the International Fuel Tax Agreement entered into by the department pursuant to IC 6-8.1-3-14. The notice of proposed assessment is prima facie evidence that the department's claim for the unpaid tax is valid. The burden of proving that the proposed assessment is wrong rests with the person against whom the proposed assessment is made. If the person files a protest and requires a hearing on the protest, the department shall set the hearing at the department's earliest convenient time and shall notify the person by United States mail of the time, date, and location of the hearing. The department may hold the hearing at the location of the department's choice in Indiana.