The Colorado Department of Revenue defines an SR22 as a rider to an insurance policy that is needed in order to get your license back after having certain suspensions or revocations. Also the state of Colorado may require you to file this certificate of financial responsibility to keep from getting your license suspended in some circumstances.

How long you are required to have the SR-22 appears to typically be 3 years. For example if you have been found guilty of driving without insurance to get your license reinstated CO requires that you file future proof of automobile liability insurance in the form of an SR 22 for three years.

Colorado legislator also notes that under some circumstance, such as those with an alcohol related driving offense, it could be for a different period, such as only as long as the insured's license has been restraint.

It appears that the SR-22 must typically be maintained in Colorado for 3 years however there are situations where instead it must be kept for a period equal to the duration of your license revocation. If you are required to obtain and maintain an SR22 due to a violation of the law then check with the Colorado Motor Vehicle Division to find out for your specific situation how long you must keep this rider filed with the state.