Dangote has been in business long enough to know exactly where his taxes go.
...has interests in commodities in Nigeria and other African countries, including Benin, Ethiopia, Senegal, Cameroon, Ghana, South Africa, Togo, Tanzania, and Zambia.
In some countries, suitcases or wire transfers to secret accounts beat lawyers when it comes to saving in taxes. But then, now you have your fortune, now you don't.