(1) If the department determines that the amount of the tax due is greater than the amount disclosed by a return, it shall mail to the taxpayer a notice, pursuant to 15-1-211, of the additional tax proposed to be assessed. The notice must contain a statement that if payment is not made, a warrant for distraint may be filed. The taxpayer may seek review of the determination pursuant to 15-1-211.
(2) Penalty and interest must be added to a deficiency assessment as provided in 15-1-216.