(40 ILCS 5/16-155) (from Ch. 108 1/2, par. 16-155)
    Sec. 16-155. Report to system and payment of deductions.
    (a) The governing body of each school district shall make two deposits each month. The deposit for member contributions for salary paid between the first and the fifteenth of the month is due by the 25th of the month. The deposit of member contributions for salary paid between the sixteenth and last day of the month is due by the 10th of the following month. All required contributions for salary earned during a school term are due by July 10 next following the close of such school term.
    The governing body of each State institution coming under this retirement system, the State Comptroller or other State officer certifying payroll vouchers including payments of salary or wages to teachers, and any other employer of teachers, shall, monthly, forward to the secretary of the retirement system the member contributions required under this Article.
    Each employer specified above shall, prior to August 15 of each year, forward to the System a detailed statement, verified in all cases of school districts by the secretary or clerk of the district, of the amounts so contributed since the period covered by the last previous annual statement, together with required contributions not yet forwarded, such payments being payable to the System.
    The board may prescribe rules governing the form, content, investigation, control, and supervision of such statements and may establish additional interim employer reporting requirements as the Board deems necessary. If no teacher in a school district comes under the provisions of this Article, the governing body of the district shall so state under the oath of its secretary to this system, and shall at the same time forward a copy of the statement to the regional superintendent of schools.
    (b) If the governing body of an employer that is not a State agency fails to forward such required contributions within the time permitted in subsection (a) above, the System shall notify the employer of an additional amount due, equal to the greater of the following: (1) an amount representing the interest lost by the system due to late forwarding of contributions, calculated for the number of days which the employer is late in forwarding contributions at a rate of interest prescribed by the board, based on its investment experience; or (2) $50.
    (c) If the system, on August 15, is not in receipt of the detailed statements required under this Section of any school district or other employing unit, such school district or other employing unit shall pay to the system an amount equal to $250 for each day that elapses from August 15, until the day such statement is filed with the system.
(Source: P.A. 99-450, eff. 8-24-15.)