(a) All payments for the expenses of the departments of the state government shall be due and payable in the normal course of business.
(b) All payments of contingent expenses are due and payable as they may accrue.
Time for making payments
Ark. Code Ann. § 19-2-103 — under State Revenues — Receipts and Expenditures Generally.
Ark. Code Ann. § 19-2-103