40 ILCS 5/14-103.18

"Annuity": Annual payments for life, or as otherwise provided in this Article, payable in 12 equal monthly installments during the annuity payment period. The first payment shall be made for the first whole calendar month of eligibility after application and the last payment shall be made for the whole calendar month in which eligibility terminates. If an annuity to an annuitant or beneficiary, other than a survivor annuity, is less than $10 per month, the minimum payment shall be $10 per month.