You can either way, but the amount you can claim is different under each setup.
If you are classed as a share trader, i.e. running a business, you can claim costs plus GST (if you register for GST). I suggest speaking to your accountant. Under this setup you can claim GST on all expenses including brokerage. Please speak to your accountant, as this is not financial advice.
As a share investor, you claim depreciation on these items.
