There is no specific amount it may increase but generally you might expect a 10% - 15% increase in your premiums. Insurance companies are required to file their rates and rules with state regulatory bodies such as the Department of Insurance. In most cases, they impose a surcharge or charge 'points' to driver's who have been charged with an accident and/or who have made a claim against their policy. So, there isn't a 'law' that dictates that an insurance company can increase your premiums due to an accident. It's just a matter of how the rates are filed and passed on to you as a result of an accident.

You can get a direct insurance quote here if you would like to get an idea of how much it could increase.