Didn't want to start a new thread but this question is regarding a CAR payout.
Say a car is written off and insurance has determined a payout value.
Should this value be PLUS GST/HST?
Not sure why I am thinking like this but I may be recalling a convo with some out that the insurance payout should be PLUS tax.
		
		
	 
This is my experience, and it was about 15 years ago.
Our SUV was reported stolen, police report filed (cops came to my home and interrogated us to make sure we weren't perpetrating insurance fraud, but that's a separate post)...
After that, things moved very quickly. My insurance company called and said they would replace the vehicle and make us whole as much as possible with as little inconvenience to our day-to-day:
They took all the ads from Autotrader (this was before FB marketplace) of vehicles of the same make, model, trim and mileage. They took the average asking price, 
added all the extraneous costs like sales tax and MTO admin costs and that was our total compensation
In the meantime, they said we were allowed to rent a vehicle comparable to what was stolen until the settlement came through. They noted the vehicle was high end and suggested going to an exotic car dealership to rent a temporary replacement.
All in all, it was a very fair compensation and good all-round experience (besides being treated like a criminal by the MTP when I originally filed the claim).
This was State Farm back in the day.
I have a feeling that I may have been talked into the ultra-high premiums category when I first shopped for insurance, and I may have ticked off all the boxes for claims compensation, but I think you need to look at your own paperwork and see what you are entitled to in the event of a claim.
I think your individual experience will differ based on the company you bought insurance from, as well as what options your premiums cover.