here in Canada, we have a Goods & Service Tax of 5%, payable on all products, except certain essentials such as groceries, residential rent, and medical services, and services such as financial services. This is a Nation-wide tax.
We also have Provincial Sales Tax in all provinces (except Alberta, no PST there), here in BC it is 7%. Goods to which the tax is applied varies by province, as does the rate.
So, based on where I live ... I frequently cheat for shopping and cross the border into Alberta (the border is about 10-15 minutes from my door) to do the majority of our shopping, because there is no Provincial Sales Tax. Or if we are doing really big shopping trip (Christmas shopping) and our Canadian dollar is good, I cross the border into the US and go shopping in Kalispell, Montana. heheee