In addition to any criminal charges for DUI/DWI, a state may assess civil (non-criminal) penalties against a person convicted of DUI/DWI. Civil penalties may include (1) thousands of dollars of fines; (2) suspension of the driver’s license; (3) requirements for additional insurance; (4) completion of alcohol rehabilitation/treatment and DUI/DWI intervention courses; and (5) installation of an ignition interlock device (IID) on the driver’s motor vehicle.

The laws regarding civil penalties for DUI/DWI convictions are generally located in a state’s statutes—often in the penal code or criminal code.

In Montana (MT), civil penalties for DUI/DWI convictions are indeed separate from criminal charges and can be quite severe. These penalties are designed to deter impaired driving and to promote public safety. Upon conviction for a DUI/DWI, the offender can face substantial fines that may amount to thousands of dollars. The state also imposes a driver's license suspension, which can vary in length depending on the number of prior offenses and the severity of the incident. Montana law requires that individuals convicted of DUI/DWI may have to obtain SR-22 insurance, which is a form of high-risk auto insurance, to reinstate their driving privileges. Additionally, the court may order the completion of alcohol education programs, treatment, or DUI/DWI intervention courses. Finally, the installation of an Ignition Interlock Device (IID) is mandatory for all second and subsequent DUI offenses within a certain period, and it may be required for first-time offenders at the court's discretion. These civil penalties are outlined in Montana's statutes, particularly within the sections dealing with motor vehicles and traffic regulations.