30 Miss. Code. R. 3103-4.3
A licensee who does not file with the Board all requirements for renewal before the end of the licensure period will be deemed to have allowed his license to lapse. Failure to submit all renewal requirements on or before September 30 shall result in the necessity of the payment of a reinstatement fee in addition to the late fee and renewal fee. Said licensee may be reinstated by the Board, at its discretion, by the licensee's payment of the renewal fee, the late fee, a reinstatement fee and the submission of required continuing education hours provided said application for reinstatement is made within two (2) years after its last expiration date.
A license may not be reinstated after having lapsed for two (2) consecutive years. A new application must be made and the licensure regulations in effect at that time must be met.
30 Miss. Code. R. 3103-4.3