A son becoming richer than his father is a quietly interesting event, especially when the father is the King of England. The most recent annual accounts for the Sovereign Grant show that Prince William’s net worth has reached an estimated $1.6 billion. King Charles, on the other hand, is worth about $846 million. There is a big gap. It’s almost double. And the reason for it is in an area of the English countryside that has been making money for almost 700 years.
The most valuable thing in all of this is the Duchy of Cornwall. The estate was built by King Edward III in 1337 with one goal in mind: to give the heir apparent financial independence. The estate is spread out over 20 English counties and makes money from farmland, real estate, and different types of commercial leases. Following the death of Queen Elizabeth II in September 2022, King Charles took the throne. The Duchy automatically went to William. Charles had been in charge of it for 53 years and slowly increased its value before giving it to someone else. William walked into a machine that was already going very fast.
The Duchy made the Prince of Wales about $28.5 million in private income in the 2025–26 fiscal year alone. William has paid more than $26 million in taxes since he became king four years ago. The Palace released this number voluntarily as part of a larger effort to make government finances more open. That move stood out on its own. A British monarch gave out personal tax information for the first time in the history of the monarchy. King Charles paid $17.03 million in 2024–25 and more than $39.6 million since becoming king. William then said that he owed $10.24 million in income and capital gains taxes for the same time period. This level of openness would have been unthinkable a few decades ago.
The way things are set up around Highgrove House makes the financial picture even stranger. For many years, Charles lived alone on the estate in Gloucestershire. It was where he gardened, had parties, and spent most of his free time. Actually, it is part of the Duchy of Cornwall, which means that William really owns it. Charles lets his son stay there by paying him rent. Palace officials say that the amount is based on open-market values, and the deal is set up in a straightforward and businesslike way. There is still something a little strange about the idea of a king writing a rent check to his heir.
William’s plans for the Duchy show that he is not thinking about it the same way that previous kings and queens have. He plans to sell about 20% of the estate over the next ten years. The money from the sale, which could be over $670 million, will go to environmental and affordable housing projects in Cornwall, Dartmoor, the Isles of Scilly, the Bath area, and Kennington. He has also decided not to pay the £1.5 million a year that Dartmoor Prison charges him. Instead, he will use that money to improve the area. William said, “We can do so much good.” “I’m trying to make sure I’m prioritising stuff that’s going to make people’s lives, living in those areas, better.” It doesn’t sound like a royal statement as much as it sounds like someone who has really thought about what to do with something he didn’t expect to have this soon.
It is important to note that most of William’s money is locked up in land and property, not in cash. He’s not rich like a tech founder or hedge fund manager. The $1.6 billion number is mostly an estimate, not a balance. It does, however, bring in real money, have real influence, and become more and more responsible for what it stands for.
The numbers for the Sovereign Grant show that the way the British monarchy handles money is a bit strange. The Crown is the most important thing, but the inheritance can change hands so that the heir ends up with more money than the monarch. Charles built the Duchy over many years. The result was passed down to William. It’s still not clear if that change causes any tension between them or if it’s just business as usual after hundreds of years. The numbers are now out, no matter what. They also tell a story that you should read at least twice.