I am preparing to file sales tax for a new business I have set up in Quebec, Canada. Currently it's only operating in the province of Quebec.
Let's say I charge a customer $100 and Quebec and Canada sales tax is 14.975% so that would be $114.975. Now my customers pay with a credit card and Stripe charges 2.9% + $0.30. I also have other fixed and variable costs to be paid just like Stripe. Let's say x, y and z. Now does the sales tax is calculated on $100 or $100 minus all the fees?