Iowa Code § 602.9109: Payment of annuities.

Annuities granted under the terms of this article are due and payable in monthly installments on the last business day of each month following the month or other period for which the annuity has accrued and shall continue during the life of the annuitant; and payment of all annuities, refunds, and allowances granted under this article shall be made by checks or warrants drawn and issued by the director of the department of administrative services. Applications for annuities shall be in such form as the director of the department of administrative services may prescribe.