California · Insurance Code

INS §1234: The maximum rate for each policy shall be determined at regular intervals at least once every 12 months, but not more frequently than once in any three-month period.

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The maximum rate for each policy shall be determined at regular intervals at least once every 12 months, but not more frequently than once in any three-month period. At the intervals specified in the policy: (1) The rate being charged may be increased whenever the increase as determined under subdivision (b) of Section 1232 would increase that rate by one-half of 1 percent or more per annum. (2) The rate being charged shall be reduced whenever the reduction as determined under subdivision (b) of Section 1232 would decrease that rate by one-half of 1 percent or more per annum.

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