OK, thank you. I thought you were alluding to the fact that the 25% corporate would ultimately have to be paid at some point, even on foreign sourced income, e.g. if it doesn't stay foreign and goes back to Panama corporation. I see now what you were saying.I cannot advise you on that, you should talk to a good Panamanian tax lawyer. You can check Legal500 for the best lawyers in a country. Or just talk to one of the BIG4 companies.
What I meant was that, Panama simply exempts certain kinds of income from taxation. So they could raise their corporate tax rate to 40% and it still wouldn't make a difference, as long as your income falls into the exempted categories (foreign-sourced).
I will check out Legal500 - Thank you for the recommendation.