Also, you can take your cost of doing trading, L2 service, internet connection, phone bill etc as expenses, I have an additional line that is a dedicated trading line, no personal phone calls etc. I don't suggest you ever take expenses in your home such as a portion of your light bill, rent etc. as that will put you into a different category, that would be a "business" which is taxed differently and higher.
I just list myself as a daytrader and my profit comes under "additional income"
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