Princes William and Harry are, well, princes, so they’re not exactly short of a few bob.
Their money comes from a number of different sources, and they’ve both had paid jobs in the past.
But a lot of their fortune is from inheritance, with their mum Diana and their great-grandmother leaving them money in their wills.
While Diana’s fortune was split evenly between them, Queen Elizabeth, the Queen Mother decided to leave Prince Harry a lot more than his older brother.
But it wasn’t just because she preferred Harry or had some strange problem with William, and there was actually a very thoughtful reason behind it.
Years before she died, the Queen Mother reportedly put a large chunk of her money into a trust fund for all her great grandchildren.
Harry and William shared about £14m of this, with the bulk going to Harry, reports the BBC.
When the Queen dies and Prince Charles becomes king, the Duke of Cambridge, Prince William, will become the new Prince of Wales.
This means he will take on the Duchy of Cornwall, a private estate which funds the public, charitable and private activities of the heir to the throne.
Prince Harry on the other hand, won’t get any of this.