State Farm and Erie offer the cheapest minimum coverage SR-22 insurance in Washington, D.C., charging an average of $600 and $611 per year, respectively. GEICO and State Farm are the cheapest companies for non-owner SR-22 insurance, with an average cost of $267 and $467 per year, respectively.
SR-22 is not actually a type of car insurance but a mandated certificate of financial responsibility that lets the District of Columbia know that your auto policy meets the district's minimum insurance requirements. Your insurer files it with the DMV on your behalf, and it is generally required following severe violations like a DUI.