40 ILCS 5/9-151
2021 Illinois Compiled Statutes|Chapter 40 - PENSIONS|40 ILCS 5/ - Illinois Pension Code.|Article 9 - County Employees' and Officers' Annuity and Benefit Fund - Counties Over 3,000,000 Inhabitants

 (from Ch. 108 1/2, par. 9-151)Sec. 9-151.     Mortality tables and interest rates.     (a) Any single life annuity fixed or granted to any employee who was a  participant on or before January 1, 1954, or any reversionary or single  life annuity, fixed for or granted to a wife or widow shall be computed, in  the case of the employee as of his attained age when the annuity is fixed  or granted, and in the case of the wife or widow, as of employee's age and  that of his wife or widow on the date her annuity is fixed or granted,  provided that if the wife or widow is older than 5 years the junior of her  husband her age shall be assumed 5 years less than his. The American  Experience Table of Mortality with interest at 4% per annum shall be used  for the computation of the annuity values in this paragraph.(b) Until the effective date of this amendatory Act of 1985, any single  life annuity fixed or granted to any employee who becomes  a participant for the first time after January 1, 1954, or any reversionary  or single life annuity, fixed or granted to the wife or widow shall be  computed, in the case of the employee as of his attained age when the  annuity is fixed or granted, and in the case of the wife or widow her age  shall be taken as 4 years younger than her actual age, or 4 years younger  than the age of her husband, whichever will produce the lower age, as of  the date the employee's, or the wife's or widow's annuity is fixed or  granted. The Combined Annuity Mortality Table for Male Lives with interest  at 3% per annum shall be used for the computation of the single life  employee annuity values in this paragraph. Such table shall also be used  for the computation of single life widow annuity values and for the  computation of the reversionary annuities specified in this paragraph with  the female life taken as 4 years less than the male life.On or after the effective date of this amendatory Act of 1985, any  single life annuity fixed or granted to any employee who becomes a  participant for the first time after January 1, 1954, or any reversionary  or single life annuity fixed or granted to a wife or widow, shall be  computed, in the case of an employee as of his attained age when the  annuity is fixed or granted, and in the case of the wife or widow her age  shall be taken as the lower of her actual age or the age of her husband as  of the date the employee's or wife's or widow's annuity is fixed or  granted.  The Combined Annuity Mortality Table for Male Lives with  interest at 3% per annum shall be used for the computation of the single  life employee and widow annuity values in this paragraph.  Such table shall  also be used for the computation of the reversionary annuity values  specified in this paragraph with the employee life taken as 4 years less  than the male life and the spouse life taken as  the male life.  Any increased costs of a local government attributable to this amendatory  Act of 1985 are not reimbursable by the State.(c) All sums credited to any employee for annuity purposes when he  withdraws from service before age 55 shall be improved with interest at the  effective rate thereafter while he is not in service and has not entered  upon annuity until he attains age 65.(d) The amount of widow's annuity or widow's prior service annuity which  shall be fixed for the wife of an employee who is alive shall be calculated  as a reversionary annuity derived from the total accumulated sum to the  employee's credit for widow's annuity and widow's prior service annuity on  the date the annuity is fixed. An annuity for a widow shall be computed as  of her age at the date of fixation, subject to the foregoing provisions of  this Section.    (Source: P.A. 84-306.)