Cal. Corp. Code § 205

Solely for the purpose of any statute or regulation imposing any tax or fee based upon the capitalization of a corporation, all authorized shares of a corporation organized under this division shall be deemed to have a nominal or par value of one dollar ($1) per share. If any federal or other statute or regulation applicable to a particular corporation requires that the shares of such corporation have a par value, such shares shall have the par value determined by the board in order to satisfy the requirements of such statute or regulation.