It depends on what province you live in.
>>> edit... Here's something I posted elsewhere awhile back VVV.
In Ontario Canada, I use to have to pay GST(5%) and PST(8%) (goods&services and provincial taxes) on less than pure bullion when imported into Canada. Pure bullion being .999 fine was exempt from PST but subject to GST.
If I purchased from a registered business within Ontario pure bullion would be subject to PST and exempt from GST... the opposite of an international purchase.
So, if I purchased from anywhere else in Canada, or from a private sale in Ontario, there would be no taxes applied.
But now (go figure), Ontario has HST(Harmonized sales tax or PST & GST combined), so I lost any exemption internationally or from Ontario. But, I can still purchase within Canada from anywhere but Ontario, or privately within Ontario, and not hafta pay any taxes.