Fred99:
kobiak:
i believe GST is constant and sale tax could vary from sale item to another.
like alco could be 20% sale tax, but milk only 5%
No.
GST is applied (to "value added") on every transaction in a supply chain, a sales tax is collected only at the final point of (retail) sale.
GST is added at the end point (at point of sale) not each step of the way which is why businesses claim back GST because they're inputs into the production and not the final product, the final product has the GST.