(1) All rates for automobile insurance and home insurance shall be made in accordance with the following provisions:
    (a) Rates shall not be excessive, inadequate, or unfairly discriminatory. A rate shall not be held to be excessive unless the rate is unreasonably high for the insurance coverage provided and a reasonable degree of competition does not exist for the insurance to which the rate is applicable.

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Terms Used In Michigan Laws 500.2109

  • in writing: shall be construed to include printing, engraving, and lithographing; except that if the written signature of a person is required by law, the signature shall be the proper handwriting of the person or, if the person is unable to write, the person's proper mark, which may be, unless otherwise expressly prohibited by law, a clear and classifiable fingerprint of the person made with ink or another substance. See Michigan Laws 8.3q
  • Insurer: means an individual, corporation, association, partnership, reciprocal exchange, inter-insurer, Lloyds organization, fraternal benefit society, or other legal entity, engaged or attempting to engage in the business of making insurance or surety contracts. See Michigan Laws 500.106
  • Rate: means the cost of insurance per payroll before adjustment for an individual insured's size, exposure, or loss experience. See Michigan Laws 500.2402
    (b) A rate shall not be held to be inadequate unless the rate is unreasonably low for the insurance coverage provided and the continued use of the rate endangers the solvency of the insurer; or unless the rate is unreasonably low for the insurance provided and the use of the rate has or will have the effect of destroying competition among insurers, creating a monopoly, or causing a kind of insurance to be unavailable to a significant number of applicants who are in good faith entitled to procure that insurance through ordinary methods.
    (c) A rate for a coverage is unfairly discriminatory in relation to another rate for the same coverage if the differential between the rates is not reasonably justified by differences in losses, expenses, or both, or by differences in the uncertainty of loss, for the individuals or risks to which the rates apply. A reasonable justification shall be supported by a reasonable classification system; by sound actuarial principles when applicable; and by actual and credible loss and expense statistics or, in the case of new coverages and classifications, by reasonably anticipated loss and expense experience. A rate is not unfairly discriminatory because it reflects differences in expenses for individuals or risks with similar anticipated losses, or because it reflects differences in losses for individuals or risks with similar expenses.
    (2) A determination concerning the existence of a reasonable degree of competition with respect to subsection (1)(a) shall take into account a reasonable spectrum of relevant economic tests, including the number of insurers actively engaged in writing the insurance in question, the present availability of such insurance compared to its availability in comparable past periods, the underwriting return of that insurance over a period of time sufficient to assure reliability in relation to the risk associated with that insurance, and the difficulty encountered by new insurers in entering the market in order to compete for the writing of that insurance.