The position of Prince of Wales elevated Prince William to the level of billionaire in the British Crown. As determined, the heir to the throne has a net worth of 1.2 billion pounds, equivalent to around R$8.2 billion, a value that exceeds the wealth of his father, King Charles III. This revelation came with the recent publication of the annual accounts of the Sovereign Grant, the public fund of the United Kingdom Treasury that finances the official expenses of the royal family.
Kate Middleton’s spouse’s financial elevation results mainly from income from the Duchy of Cornwall. This vast estate, which was previously administered by King Charles, was automatically passed to his firstborn and direct successor after the death of Queen Elizabeth II, which occurred in September 2022.
In contrast, the private wealth of the British monarch, King Charles III, was estimated at 640 million pounds, which corresponds to approximately R$4.4 billion.
The trajectory that led William to surpass King Charles’s estate
During the period from 2025 to 2026, Prince William recorded private income of £21.6 million, equivalent to around R$147.7 million at current exchange rates. However, since assuming the title of Prince of Wales, he would have contributed more than R$140 million in tax obligations.
This transparency in the disclosure of accounts is part of a joint initiative by King Charles and Prince William to provide greater clarity about the monarchy’s financing model, an essential move to reinforce public trust and the legitimacy of the Crown in modern times.
Controversial rent waiver marks new phase for Prince William
Parallel to the news of his fortune, new information came to light: George, Charlotte and Louis’ father decided to waive the controversial £1.5 million annual rent from Dartmoor Prison. That facility was decommissioned in July 2024 after the discovery of elevated concentrations of radon, a naturally occurring radioactive gas in soil and rocks known to increase the risk of lung cancer.
For subsequent tax years from 2026-27, Prince William requested that the amount corresponding to this rent be deducted from his income as heir to the Duchy of Cornwall. The intention is to direct this amount towards revitalization and support projects for local communities.