Ill. Admin. Code tit. 80, § 2500.50
b) The minimum amount an employee or annuitant may authorize to be withheld for United States Savings Bonds is $2.50 per pay period. Whenever a sufficient sum has accumulated in an employee's or annuitant's account in the trust fund established for the purchase of United States Savings Bonds in the denomination selected by the employee in his deduction authorization form, the Comptroller shall purchase such bond on behalf of the employee. The Comptroller shall not be liable for interest on funds withheld for the purchase of bonds.
United States Savings Bonds must be issued in registered form. Registrations requested must conform with one of the forms as required under 31 USCA 3105.
(Source: Amended at 26 Ill. Reg. 2656, effective February 22, 2002)