For fiscal years prior to July 1, 1994, interest, as required in Miss. Code Ann. § 25-11-117 (1972, as amended), for the repayment of a refund, or as required in Miss. Code Ann. § 25-11-105 (1972, as amended) for the payment of an adjustment for non-reported covered service and/or compensation due to administrative error, shall be calculated on the basis of the interest rate adopted by the PERS Board of Trustees. This interest rate was based on the actuarial assumed interest rate of the System.
27 Miss. Code. R. 210-43-101