80 Ill. Adm. Code 1540.120
Level Income Option
Section 1540
Section 1540.120 Level
Income Option
a) Basis of Computation.
The Level Income Option shall be based on an estimate of a
member's primary Social Security benefit, as provided by the Social Security
Administration. The calculation shall be based on standard actuarial tables
maintained by the System.
b) Effect on Automatic Increase Annuity.
Should an annuitant subsequently become eligible for the
automatic increase annuity benefit, such increases shall be based on the amount
of retirement annuity received at the date of eligibility for the increases.
c) Effect on Widows and Survivors Annuities.
Upon death of an annuitant, any widow or survivors benefits
which become payable shall be based on the amount of the member's retirement
annuity received at the date of death.