King Charles III is set to reveal his personal tax bill on Thursday, a move that would make him the first British monarch to publicly disclose such information. This disclosure comes amid increasing demands for transparency in royal finances, intensified by recent scrutiny surrounding his brother, Prince Andrew.
The details are expected to be released during Buckingham Palace's annual briefing on the Sovereign Grant, the public funding mechanism for the monarchy. Last year, the palace provided a detailed report on its expenditures, including funds allocated for the significant renovation of Buckingham Palace.
While Charles previously released tax information on his personal income as the Prince of Wales, this marks the first time such a disclosure will occur since he ascended to the throne in 2022. His son, Prince William, the current Prince of Wales, is also anticipated to follow suit in a separate briefing.
These steps are a response to calls from lawmakers and the public for greater insight into the monarchy's financial operations, particularly in light of revelations concerning the former Prince Andrew. Andrew Mountbatten-Windsor, as he is now known, had his royal titles revoked in 2025 and is reportedly under investigation for misconduct in public office related to his association with convicted sex offender Jeffrey Epstein. He has also reportedly vacated a royal estate where he was not paying rent.
According to BBC reports citing palace sources, the King made the personal decision to share his tax payments as part of an initiative to foster broader understanding and accountability. Even before the issues involving Prince Andrew surfaced, King Charles had expressed intentions to streamline the monarchy and reduce costs, aiming to ensure the institution's longevity amidst evolving public perceptions of hereditary roles in a democratic society.
The King possesses a personal fortune estimated at 680 million pounds ($896 million), ranking him among Britain's wealthiest individuals. Although the monarch is not legally obligated to pay income tax, Charles voluntarily does so on his private earnings. His mother, Queen Elizabeth II, began paying taxes in 1993 following public outcry over the cost of repairing Windsor Castle after a fire.
King Charles's tax disclosure is expected to pertain solely to his private income, which is largely derived from his privately owned estates, Balmoral in Scotland and Sandringham in England, as well as his savings and investments. The monarch does not pay taxes on the Sovereign Grant or other funds used for official duties.
Prince William's primary source of private income is the Duchy of Cornwall, a substantial portfolio of land and investments managed in trust for the Prince of Wales. The Duchy reported a profit of 22.9 million pounds ($30.2 million) last year.