(1) Except as otherwise provided in subsection (2) of this section, the governing body of a municipality, after the passage of the ordinance provided for in Section 21-29-5, shall annually levy a tax as certified by the Public Employees’ Retirement System on the taxable property within the municipality or use other funds available, to enable it to meet the requirements of the retirement system. The levy made, or other funds made available, for the municipality’s contribution to the system shall be in an amount sufficient to make the system actuarially sound. The tax herein authorized is in addition to all other taxes authorized by law, and may be increased by no more than one-half (½) mill per year as certified by the Public Employees’ Retirement System; however, if any levy to pay debt service on bonds issued under Section 31-25-21 as described in subsection (2) of this section is reduced for any year as a result of payment of the bonds or otherwise, the levy under this subsection (1) for such year may be increased by an amount, in addition to the one-half (½) mill otherwise authorized, not to exceed the reduction for such year in the millage levied to pay debt service on the bonds.

(2) In addition to, or in lieu of, the method of funding provided for in subsection (1) of this section, the municipality may fund or assist in funding the retirement system through the use of revenue bonds issued pursuant to Section 31-25-21. Any tax levied to service the debt on such bonds shall not be included in the ten percent (10%) limitation on increases under Section 27-39-321.

(3) Each municipality with a general municipal employees’ retirement fund shall be provided an actuarial study of the fund at least every four (4) years by the Public Employees’ Retirement System, which shall report the findings to the Legislature of the State of Mississippi. The first such study shall be filed with the Legislature in January 1980.

(4) The Board of Trustees of the Public Employees’ Retirement System, when any municipality has enacted an enabling ordinance as provided in Sections 21-29-5 and 21-29-101, upon a finding that either the municipal employees’ retirement system or the disability and relief fund for firemen and policemen is not funded in an actuarially sound manner which shall be spread upon the minutes of the board, may by order provide that the revenue or a portion thereof produced by the levy authorized for one (1) system be diverted to fund the less actuarially sound system within the same municipality. No transfer may be made of funds from one (1) municipality to another.

(5) The municipality and the Board of Trustees of the Public Employees’ Retirement System may enter into such contracts and agreements as are deemed necessary to implement the provisions of this section, including, but not limited to, contracts and agreements addressing the use, application and investment of proceeds of bonds issued under Section 31-25-21 and earnings thereon and the relative rights and obligations of the municipality and the Public Employees’ Retirement System during the period that the bonds are outstanding and thereafter.