(a) Nonrevenue receipts shall consist of:

(1) The repayment of the principal amount of loans;

(2) The proceeds of the sale and redemption of securities, including premiums received thereon;

(3) The transfer of funds, by warrants, between funds or fund accounts on the books of the Treasurer of State, the Auditor of State, and the Chief Fiscal Officer of the State;

(4) Federal reimbursement received by state agencies on account of eligible expenditures for specific programs and deposited into funds or fund accounts in the State Treasury classified other than federal;

(5) Refunds to the state or state agencies, departments, or institutions; and

(6) Funds collected from drug manufacturers as rebates according to promulgated regulations of Title XIX of the Social Security Act, as amended, and deposited into the Arkansas Medicaid Rebate Program Revolving Fund. These funds shall be transferrable to the Department of Human Services Medicaid Paying Accounts Account for disbursement in the Arkansas Medicaid Program.

(b) Refunds to expenditures shall consist of:

(1) Proceeds received from insurance policies for casualty losses by state agencies, departments, or institutions;

(2) Proceeds received from vendors on account of overpayment of obligations remitted by state agencies, departments, or institutions;

(3) Refunds to state agencies for cash advances or over allocations made to other state and local agencies for subgrants;

(4) Refunds to state agencies for the erroneous payment or overpayment of salaries to state employees;

(5) Proceeds derived from the maturity or redemption of investments;

(6) Reimbursements to institutions of higher education for cash fund expenditures for salaries that are properly chargeable to funds in the State Treasury;

(7) Deposits by the counties in the State Aid Road Fund and in the County Supplement Fund Account in the State Treasury for matching funds available in the state aid road construction program;

(8) Reimbursements to state agencies for cost-sharing purposes;

(9) Federal reimbursements of expenses paid in advance by the state on behalf of the federal government; and

(10) Reimbursements by vendors or their agents for warranties, product rebates, and service adjustments.

(c) The first eighteen million dollars ($18,000,000) received each fiscal year by the State of Arkansas under the State and Local Fiscal Assistance Act of 1972, 31 U.S.C. § 6701, commonly referred to as the "Revenue Sharing Act", shall be transferred by the Treasurer of State to the Federal Revenue Sharing State Highway Trust Fund Account in the State Highway and Transportation Department Fund.

(d) Income derived from the sale of miscellaneous and junk inventories whose ownership is questionable or where excessive administrative accounting is required shall be deposited into the State Treasury as a nonrevenue receipt, there to be credited to the Miscellaneous Agencies Fund Account.