Originally Posted by
YVR Cockroach
We have/had the same thing here. A generation or two ago, 10% was the norm in Canada.
+1. The US argument of the servers being paid slave wages doesn't wash here.
But, back to the original Q - you can generally double the GST as an indication of how much to tip.
For hotel room tipping, that's all over the place. I usually leave $1-2/day rather than a lump sum at the end. Of course, the rule there is pretty loose and plenty of people don't leave a tip at all.