@Nick2005 I believe that this question was asked a few years back and never answered solidly. Short answer I found is that you pay taxes upfront (because they can’t be removed at time of purchase due to a system limitation) and claim back afterwards. See below for the long answer:
”in order to claim those taxes (for residents in the province of Ontario at least) you must fill out and mail in a completed form (one page long) along with proof of Status and original receipts/invoices (which is all we need provided from PM) sought after in the claim to the Ontario Ministry of Finance. This form and tons of other useful information relating to this subject can be found here at; http://www.fin.gov.on.ca/en/forms/general/0248.html.
Also interesting to note: it states that it is recommended that you send only one form with multiple claims at once, rather than many smaller claims, where you have up to 4 years from the date of receipt to file for the tax exemption.”
