An SR-22 in Montana is a certification of financial responsibility, not an actual insurance policy. It's filed by either you or your insurance company after certain moving violations like DUI or driving without insurance. While the certificate itself doesn't affect rates, the infractions necessitating an SR-22 can lead to a significant increase in your premiums due to the heightened risk profile associated with such violations.
For those in need of SR-22 coverage, State Farm offers the most affordable state minimum coverage insurance at $151 per year, while Nationwide is a close second with annual premiums of $360.
If you're looking for the cheapest non-owner car insurance with an SR-22 requirement, State Farm leads with a yearly rate of $274, followed by Progressive, which offers a competitive rate of $393 annually.