You need to read the OT course notes chapter 15 section 1.2 and preferably listen to the lectures. There is no Financial Year 2013/14 – this is a tax year used for individuals – there is as you say FY 2013 and FY 2014 which run from April 1 to March 31 and are denoted by reference to the year in which they START so that FY 2013 runs from April 1 2013 to March 31 2014