While working on a BigCo product that produced invoices to advertisers in different countries I learned that there are different local laws around invoicing and

While working on a BigCo product that produced invoices to advertisers in different countries I learned that there are different local laws around invoicing and how a final price is shown to a customer. In the US all prices in our application were exclusive of taxes, which were added after a total cost for customer was computed. For Brazil, a multi month and multi team effort ensued to assure variable tax rates could be applied to different customers and so a only a final price/cost inclusive of “taxes” would be shown to advertisers. … this makes me wonder if taxes/“cost of doing business” is the true cause (something the author waves away without data, and which I don’t have either :) …