King Charles is set to become the first British monarch to publicly reveal his personal tax bill, in what Buckingham Palace describes as an effort to increase transparency around royal finances. According to the palace, the move comes at the king's own request, and forms part of a broader push to modernise the way the monarchy accounts for its money.
Prince William is expected to join his father's effort, despite having previously resisted calls to disclose such details. The participation of the heir to the throne is being presented as a sign that the drive toward greater openness is meant to extend beyond the reigning monarch and into the next generation.
The figures are due to be released later this week, alongside the annual reports on royal finances. Those reports include the Sovereign Grant, the public funding that supports the official duties of the monarchy, as well as the accounts of the Duchy of Lancaster, the private estate that provides the sovereign with income.
The timing is notable, because the disclosures come as public support for the royal family sits at its lowest level in more than 30 years. The decision to publish the king's tax bill is widely seen as an attempt to respond to that mood and to a growing demand for accountability over how the institution is funded.
According to royal commentator Richard Fitzwilliams, who spoke to GB News, the Sovereign Grant has risen sharply, from 86 million pounds in 2024 to 2025 to 137 million pounds for 2026 to 2027. He said part of that increase is tied to the 369 million pound, ten-year refurbishment of Buckingham Palace, and part reflects large profits generated from offshore wind farms on the Crown Estate.
The commentator also pointed to wider scrutiny of royal living arrangements. He noted the case of Andrew Mountbatten Windsor and the Royal Lodge, where a large initial payment was followed by what was described as a nominal rent, as well as reports that Princesses Beatrice and Eugenie, as non-working royals, have been living rent-free in royal properties, with the king said to be paying their rent. By contrast, he said, the Prince and Princess of Wales pay market value for their home at Forest Lodge.
Taken together, the planned disclosures are framed as a way to address long-standing cynicism about royal finances at a time when parliamentary bodies are also examining how royal residences and the Crown Estate are managed. Whether the publication of the king's tax bill will be enough to ease public concern remains an open question, with the full details still to come later in the week.