According to Jeff Bezos, billionaires have a hard time finding ways to spend their money. In an interview with Axel Springer CEO, Mathias Döpfner, the Amazon head and richest person in the world called space travel the only way he could imagine using his vast financial resources.

But billionaires don’t need to go to space to spend their money. They have plenty of options right here on Earth. A good place for Bezos to start: actually paying Amazon’s corporate taxes.