Miss. Code Ann. § 21-29-25

All expenses of the operation of the retirement system shall be paid out of the retirement reserve fund provided by Section 21-29-23 . The Public Employees' Retirement System is hereby authorized to deduct two percent (2%) of all income, exclusive of employee contributions, to be transferred to the expense fund of the Public Employees' Retirement System of Mississippi to defray the costs of administering the fund.