First of all, there is no specific amount your insurance 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. Also, there is really no such thing as 'full coverage". Most people use this term to refer to physical damage coverage. Physical damage coverage consists of collision and comprehensive coverage. Generally, collision insurance covers damage to your automobile caused by collision with another object or by upset. Comprehensive insurance covers damage to your automobile from vandalism, theft or glass breakage. Most lienholders require physical damage coverage if you are financing or leasing your vehicle. If your vehicle was 'totaled,' you and/or your lienholder (if there is one) will be paid the vehicle's 'actual cash value.' This will take your vehicle's depreciation into account. Also, you will be responsible to pay for the deductible you chose.