Illinois Statutes Chapter 40. Pensions § 5/6-166. Contributions for age and service annuities or Tier 2 monthly retirement annuities for present employees and future entrants

(a) After the effective date and prior to July 1, 1953, 3 1/2%, and after June 30, 1953, and prior to September 1, 1959, 6%, and beginning September 1, 1959, 7 1/8% of each payment of the salary of each present employee and future entrant shall be deducted and contributed to the fund for age and service annuity or Tier 2 monthly retirement annuity. The deductions shall be made at the time payments of salary are payable and shall continue while the employee is in service.

Concurrently with each such contribution, the city shall contribute 8 1/2% of each payment of salary, but the city contributions shall cease for all employees upon their attainment of age 63.

(b) Each contribution by the employee and the city shall be allocated to the account of and credited to the employee, and shall be improved by interest at the applicable rate during the time he is in service until the age and service annuity is fixed. Any accretion, by way of interest or otherwise, upon such sum or any deduction from salary made after the annuity is fixed for a present employee or after attainment of age 63 by a future entrant who first becomes a fireman under this Article before January 1, 2011 shall not be credited to the employee for age and service annuity.