You have to pay tax on any profit and you're not really going to get someone to tell you how much on the forums. Sure, you will get people giving guidance if you decide to work it out for yourself and have questions about the finer detail.
However, working out how much you'll owe depends on your current earnings, your residency, your expenses in the year, your mortgage interest, whether you're registered for the PRTB and a host of other information. It's what accountants are paid for.