Gates says he will donate all his wealth in the future

Bill Gates recently tweeted that the Bill & Melinda Gates Foundation plans to increase its annual investment from nearly $6 billion to $9 billion by 2026. "To help achieve this spending growth, this month I will transfer $20 billion into the foundation's endowment." In the future, he plans to donate all his wealth to the Bill & Melinda Gates Foundation, "I will drop all the way from the world's richest rankings and eventually drop out of the list.