50 Ill. Adm. Code 2603.40
Rates
Section 2603
Section 2603.40 Rates
a) No insurance company shall place a risk in a rating
classification on the basis of sex, sexual orientation or marital status or
otherwise differentiate in rates on the basis of sex, sexual orientation or
marital status unless that classification or differentiation is based upon
expected claim costs and expenses derived by applying sound actuarial
principles to relevant and reasonably current company or intercompany studies,
claim costs, and expense experience. After July 1, 1979, no company shall
charge a differential by sex, sexual orientation or marital status larger than
the differential indicated by the criterion stated in this Section.
b) No insurance company shall use separate rating classifications
or otherwise differentiate in rates on the basis of actual or perceived gender
identity, or on the basis that the insured or prospective insured is a transgender
person, or on the basis that the insured or prospective insured has undergone,
or is in the process of undergoing, gender transition, unless the
classification or differentiation is based upon expected claim costs and
expenses derived by applying sound actuarial principles to relevant and
reasonably current company or intercompany studies, claim costs, and expense
experience. After August 1, 2020, no company shall charge a differential by
actual or perceived gender identity, or by the fact that the insured or
prospective insured is a transgender person, or on the basis that the insured
or prospective insured has undergone, or is in the process of undergoing,
gender transition, that is larger than the differential indicated by the
criterion stated in this Section. Nothing in this Section otherwise prohibits
a company from recognizing an individual's gender identity to the extent
requested by the individual.
c) An insurer shall, upon request of the Director, justify that any
classification or differentiation described in this Section equitably and
reasonably reflects differences in expected claim costs and expenses.