Interest will be credited to individual member accounts from the date that the member contributions are received by the System at the rate of regular interest established from time to time by the Board of Trustees. Whenever member contributions are not received by the Maine State Retirement System payroll filing deadline established by Chapter 201, interest will be credited to the members' accounts as of the date of the payroll filing deadline.
94- 411 C.M.R. ch. 301, § 1