...

Canadian dealers should set up rules like this to cover GST and HST for the various provinces (check the rates, this screenshot is for demo only)

 FAQ: 

Q: Is there a way to tax items in shipped orders?

A: Yes. The setup depends on whether the dealer is using the US Tax Database, Tax Rules, or a Flat Tax.

With the US Tax Database, tax is automatically charged for shipped orders based on the zip code & county of the shipped order if the dealer has tax nexus in a state. By default they have tax nexus in every state that they have store locations (on our platform). If a dealer wants to charge tax in a state in which they don't currently have store locations, they can either add a dummy store location in that state (with "customer pickup" disabled) or they can give us a list of the states and we can set it in the database in a nexus override property (introduced in PF 13.5).

Since it would be a pain to create more than a few dummy stores, the new nexus override property is definitely the way to go. The override list needs to be a lowercase string of comma-separated postal abbreviations. Once you have it, send it to support with your dealer code please.

Example: 
"ca,co,dc,ga,il,in,ia,ky,la,md,me,mi,mn,nc,nd,ne,nj,nv,ok,ri,sd,ut,va,wa,wi,wv"

Q: Is there a way to see what taxes are configured in the Tax DB?

A: There's no way for the dealer to see it but we can run a query from the database and export to XLS for you.