Adjusted in/against what?
So I sell a good for Rs.200, My inputs were Rs.100. I pay "net" federal Sales Tax of 17% of Rs.100 = Rs.17.
Now with this new provincial tax, what will happen? Will I be paying now Rs.17+16 = Rs. 33?
If so, my monthly Sales Tax bill is effectively almost DOUBLED !
And I'm not getting the last part about 5% extra taxes. What tax are you talking about ? Are you just talking about the first tax bracket of 5% which starts on income above 400k?