Minn. Stat. § 270C.27
Subd. 1. In general.
(a) A taxpayer may bring a civil action for damages against the commissioner in district court when an employee or the department has knowingly or negligently:
Subd. 2. Damages.
On a finding of liability on the part of the defendant in an action brought under subdivision 1, the defendant is liable to the plaintiff in an amount equal to the sum of actual, direct economic damages sustained by the plaintiff due to the actions of the defendant, plus the costs of the action. Damages must be paid in accordance with section 3.736, subdivision 7.
Subd. 3. Mitigation of damages.
Damages awarded must be reduced by the amount of the damages that could reasonably have been mitigated by the plaintiff.