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Washington State Office of the Insurance Commissioner

How auto insurance companies set rates

An auto rate (also called a premium) is the amount an insurance company charges you in return for auto coverage. To determine how much your company will charge you (and others who have the same risk), it'll look at rating factors.

Factors companies look at when setting auto rates

Insurers can base rates on certain factors that affect risk, including:

  • Your age
  • Your gender
  • Marital status:  Insurers must consider domestic partnerships the same as married couples for rate purposes.
  • Your vehicle: Generally, the more expensive your vehicle, the more you pay for insurance. Also, because sports cars and high-performance cars are involved in more accidents, cost more to repair, and are stolen more often, they cost more to insure.
  • Where you live: Population density, crime and driving conditions, for example, affect risks.
  • How much you drive
  • Your driving record and your claims history
  • Credit History: Your insurer may use information in your credit history to determine your rate.  If your credit insurance score causes you to pay a higher rate, the company must tell you what factors caused that increase.

How insurance rates get approved

Insurance companies must send us their rate requests when they want to change their rates.

Before we'll decide to approve or disapprove the request, we'll review the rate request to make sure the company's financial and statistical data are accurate to justify the rate change.




Updated 01/27/2012

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Need more help? Call our FREE Insurance Consumer Hotline at 1-800-562-6900
or Email us at cap@oic.wa.gov.