(a) All certificates of authority shall expire at 12:00 Midnight on June 30 of the year following date of issuance or renewal. An insurer desiring renewal shall file on March 1 preceding expiration a copy of its annual statement of December 31 of the preceding year in a form approved for current use by the Commissioner. On or before March 1 of each year, each insurer at its expense shall publish in a newspaper of general circulation published in this state a copy of such statement in short form showing income, assets, expenditures, and liabilities in gross as of December 31 of the preceding year to be sworn to by the officer or agent making the same; and such statement so published must be filed with the Commissioner with a copy of the statement as published attached thereto. Notwithstanding the March 1 deadline, the Commissioner may for good cause grant an extension of time for filing such annual statement not to exceed 60 days. If the insurer qualifies, its certificate shall be renewed annually; provided, however, that any certificate of authority shall continue in full force and effect until the new certificate is issued or specifically refused.

(b) The Commissioner may amend a certificate of authority at any time to accord with changes in the insurer's charter or insuring powers.