Section 40 ILCS 5/12-150 - Contributions by employees for service annuity(a) From each payment of salary to a present employee beginning August 4, 1961, and prior to September 1, 1971, there shall be deducted as contributions for service annuity 6% of such payment. Beginning September 1, 1971, the deduction shall be 6 1/2% of salary. These contributions shall continue until the amounts thus deducted will provide an accumulation, at regular interest, at least equal to the amount that would be provided on such date from employee contributions, assuming regular interest to such date, if such employee had been contributing in accordance with the provisions of "The 1919 Act" and this Article from the beginning of his service and the salary of the employee during his prior service was the same as it was on July 1, 1919, or on July 1, 1937 in the case of an employee of the board.(b) From each payment of salary to a future entrant beginning August 4, 1961, and prior to September 1, 1971, there shall be deducted as contributions for service annuity 6% of such payment. Beginning September 1, 1971, the deduction shall be 6 1/2% of salary. Beginning January 1, 1990, the deduction shall be 7% of salary, except that the deduction shall be 9% of salary for a person who first becomes an employee on or after January 1, 2022 or who makes the election under item (i) of subsection (d-15) of Section 1-160. (c) For service rendered prior to August 4, 1961, the rates of contribution by employees for service annuity shall be as follows: July 1, 1919 to July 20, 1947, inclusive, 4% of salary; July 21, 1947 to August 3, 1961, inclusive, 5% of salary. For the period from July 1, 1919, to August 4, 1961 such deductions for a present employee shall continue until such date as the amounts deducted will provide an accumulation at least equal to that which would be provided on such date, assuming regular interest to such date, from deductions from salary of such employee if such employee had been under the provisions of "The 1919 Act" and this Article from the beginning of his service and the salary of such employee during his period of prior service was the same as it was on July 1, 1919 or on July 1, 1937 in the case of an employee of the board.
(d) Any employee shall have the option to contribute for service annuity an amount, together with regular interest, equal to the difference between the amount he had accumulated in the fund on June 30, 1947, from contributions at the rate of 4% of salary, together with regular interest, and the amount he would have accumulated, together with regular interest, if he had made contributions at the rate of 5% of salary. All such contributions shall be subject to salary limitations and other conditions in effect prior to July 1, 1947. Upon making such contribution the employer of such employee shall contribute in the ratio of 2 to 1 with such employee.Amended by P.A. 102-0263,§ 15, eff. 8/6/2021.Amended by P.A. 098-0622,§ 5, eff. 6/1/2014.