Good clip Dash and exactly right (having spent many years working at our friendly tax dept).

Simply put - captial gains are generally not taxable within your TFSA. However, if you are day trading or frequently trading within your TFSA, CRA may ( and more likely/probably will) consider that as business income and look for their pound of flesh. I doubt frequency will be defined.

I would be very careful with the frequency within which I traded within my TFSA. Invest yes, day trade or trade frequently no.

JMO and not to be construed as advice