30 Miss. Code. R. 901-15.4
The failure on the part of any licensee to renew his certificate annually in the month of December as required above, shall not deprive such person of the right of renewal, but the fee to be paid for the renewal of a certificate after the month of December shall be increased ten percent (10¢) for each month, or fraction of a month, that payment of renewal is delayed. The maximum fee for delayed renewal shall not exceed five (5) times the normal renewal fee. If a licensee fails to renew his certificate for six (6) months or more, the licensee shall be required to submit a new application, paying back fees and submitting proof of continuing professional competency compliance. If the certificate has expired for five (5) years or more, in addition to submitting a new application and proof of continuing professional competency compliance, re-examination in the Principles and Practice of Engineering and/or Surveying will be required. The re-examination requirements may be waived by the Board provided the applicant has continued to legally practice in another jurisdiction from the date of expiration of his certificate.
30 Miss. Code. R. 901-15.4