All licenses of manufacturers, brokers, sales agents, importers, and passenger common carriers as provided for under s. 565.02 shall be issued annually and shall run from October 1 to the succeeding September 30; except that, when a manufacturer, broker, sales agent, importer, or passenger common carrier begins business after April 1 in any year, the division may issue a license expiring on the succeeding September 30 upon the payment of one-half the tax for such annual license. However, the division may revise license renewal dates and establish a pro rata fee schedule for initial implementation of the revised renewal dates by rule.