When calculating federal or state income tax withholding, the 4.5% (6.5% SLEP before June 1, 2006, and 7.50% on and after June 1, 2006, 7.5% ECO ) Regular IMRF member contributions should be subtracted from the gross wage.
Example:
Gross Wage |
$500.00 |
4.5 % member contribution |
22.50 |
Base withholding on this amount |
$477.50 |