The relevant fees are specified in Rules AU-6.2.3 to AU-6.2.5 below: different fees are specified for Category 1, Category 2 and Category 3 investment firms. The fees due on 1st December are those due for the following calendar year, and are calculated on the basis of the firm's latest audited financial statements for the previous calendar year: i.e. the fee payable on 1st December 2013 for the 2014 year (for example) is calculated using the audited financial statements for 2012, assuming a 31st December year end. Where a licensee does not operate its accounts on a calendar-year basis, then the most recent audited financial statements available are used instead.