I have a Canadian corporation and I’m doing Canadian consulting (100% of services will be based in Canada) for a US company (paying for my services). They are asking for W9 to be completed. I don’t believe it should apply to me.
Just to clarify this is my Canadian corporation being contracted by this US company for consulting services in Canada. My company will invoice them and will remit the appropriate HST.
As a Canadian residing in Canada and not being employed by this company in the US you have no obligation to pay taxes in the US nor to comply with any employment or tax-related issue relating to the US. The IRS has no jurisdiction or interest in what you do.
The US company is entirely mistaken.
I suggest you speak to your accountant. There is no reason that I can see that you would be billing them HST. This is a services being provided to someone or entity outside Canada. You do not collect HST for goods or services exported from Canada.