Britain’s King Charles III waves as he arrives on the second day of the Royal Ascot horse racing meeting in Ascot, west of London, on June 17, 2026. (Photo by JUSTIN TALLIS / AFP)

King Charles III has paid more than £30 million ($39.6 million) in personal taxes since becoming monarch in September 2022, Buckingham Palace announced Thursday, in the first such disclosure by a reigning British sovereign.

The palace, which had confirmed at the weekend that it would make the unprecedented release, said it was part of its “commitment to transparency” as royal finances come under increasing public scrutiny.

Charles’s eldest son and heir Prince William also for the first time revealed his personal tax information, having paid more than £20 million in taxes since inheriting the title of Prince of Wales when his father became king.

UK monarchs are legally exempt from paying certain taxes, though they have paid some duties voluntarily for decades, and they also have no obligation to disclose their private tax bills.