The creditable service established under this Section may be used for all purposes under this Article and the Retirement Systems Reciprocal Act, except for the computation of the highest average annual salary under Section 12-133 or the determination of salary under this or any other Article of this Code.
If a person who retires under this Section dies before all payments of employee contribution have been made, the remaining payments shall be deducted from any survivor or death benefits payable to the person's surviving spouse or beneficiary.
All employee contributions paid under this Section shall be deemed employee contributions for the purposes of determining the tax levy under Section 12-149. Employee contributions made under this Section may be refunded under the same terms and conditions as other employee contributions under this Article.
40 ILCS 5/12-133.5