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How Do Insurers Determine Auto Premiums?
The insurer uses each piece of information it gets from and about you to decide
whether to insure you and how much you will pay for auto insurance. That is
because each is linked to a factor that affects your premium. Some factors are
related to the characteristics of the driver(s) and some to the type of car insured.
Others are based on the amount of coverage you buy. There also are discounts
that will reduce the premium.
Not every insurer uses the same factors. Which factors insurers use to determine
premium is different in each state. Below are examples of some of the most
common rating factors that insurers use.
Driver Characteristics
General Information about the Driver
Age, years of driving experience, gender and marital status are common factors
used to calculate premiums. The insurer will obtain information about your driving
record and accident history from a third-party company. Generally, younger, less-
experienced drivers pay more than older, experienced drivers; females pay less
than similar age males; and married people pay less than single people.
Driving Safety Record
You will pay more if you or other drivers insured by your policy have been
convicted of speeding or other trafc violations or were responsible for accidents.
Insurers get information about trafc convictions from the state Department of
Motor Vehicles and from third-party vendors, such as CLUE, that collect data on
insurance claims.
Principal Operator
When there is more than one driver or car in a household, insurers have rules
to decide which driver determines the premium for each car. Some insurers
calculate the premium based on the driver who uses a car the most. Other
insurers may use the highest-risk driver, usually the youngest driver in the
household, as the “principal operator” to determine the premium for a car, even if
that young driver uses the car very little.
Annual Mileage and Vehicle Use
Generally, the more miles you drive each year, the more you will pay for
insurance. You will also pay a higher premium if you use your car for business.
Location/Garaging Address of the Insured Vehicle
Your premium will be higher or lower based on the insurer’s claims experience in
the ZIP code or territory where you live. For example, urban areas tend to have
higher rates than suburban or rural areas.