So I need to fill in my ETax this last FY and yeah I made a loss of some 20K from CFD daytrading. I consider this to be a 'profit-making undertaking' under s15-15 of ITAA 1997 so this can be claimed as a deduction against assessable income. I dont see it as recreational gambling as I was trading fulltime and conducting frequent trades of considerable size. So I was wondering what others who have made CFD losses done in their tax return? Do you fill in fill in section 'D15 - Other deductions' under Expenses given my reasons above are all valid? Or do you only treat these as a CGT event and use it to offset future capital gains?