In most states accidents stay on record for at least 3 years. However, different companies have different policies in place regarding premium adjustments in terms of your driving record. Some will lower after 6 months, 1 year, or some wait the full 3 years. Just like the stock market, insurance companies change their rates ALL the time. It's best to do some insurance shopping at least once every 6 to 12 months to see if you can qualify for a lower rate anywhere else.