There are a number of important expenses to factor into a big move, and one of them is car insurance. Depending on where you're headed, your car insurance rates may change significantly for better or worse. CarInsurance.com, an independent quote-comparison website, offers a tool that answers Will my insurance go up if I move? It will help consumers budget accordingly before a move. Simply input current and new ZIP codes to see the average rate change. In addition to their moving calculator, Carinsurance.com experts offer a few key tips for updating your policy when you move:

• Notify the car insurer. States typically give 10 to 60 days after moving to register a vehicle. The insurer from the previous state usually allows the same time to switch to a new policy, so use this window of time to compare rates and coverage. Drivers still need to notify their insurer of their new address even if they move within the same state or town.
• Know the minimum coverage required under state law. Drivers should find out the minimum car insurance requirements in their new state because liability limits and other necessary coverage vary by state. For example, some states don't require personal injury protection (PIP).
• Have a new policy in effect before the old one is canceled. Drivers shouldn't cancel or let their current policy lapse before registering their vehicle and having their new coverage in place. Drivers changing states will need to return their license plates.
• Be aware of potential refunds or fees. Drivers who paid their auto insurance term in full and cancel before the renewal date should check with their insurer to see if they are eligible for a pro-rated refund. It's possible an insurer will charge a fee for early cancellation.

Click through the slideshow above to see the 5 most expensive moves for car insurance rates, and check out Carinsurance.com's tool to calculate how much a move may cost you, or save you, in auto insurance rate changes. Related: 5 most expensive states for insuring a teen driver