I am newbie in the dropshipping business, but eager to learn. I want to start my business online using drop-shipping companies in the US. My question is do I pay taxes in both countries, even though the product would never be in Canada? I am extremely confused. Also, I was thinking to rent a suite # (PO Box) for my business instead of home address. Is this OK to do or not.? Any recommendations?

In advance, thank you for your help