- Apple makes money in the US and because of various tax loopholes, does not pay corporate taxes for those revenues
What happens in reality:
- Apple makes money in many different countries and pays corporate taxes in each of them (including the US), but if AFTER paying taxes (for example in an European country) they want to bring back some of that already taxed money to the US, they have to pay an additional ~40% in taxes.
Think of it this way, you as an employee go to work for one year in a European country. There you pay all your taxes and after that year you want to return to the US, but now the US decides you need to also pay income taxes in the US for your salary in Belgium.