King Charles III to Release Personal Tax Details Thursday

King Charles III is scheduled to disclose his personal tax bill on Thursday, becoming the first British monarch to do so. The information will be released during Buckingham Palace’s annual briefing on the sovereign grant, the mechanism through which taxpayers fund the monarchy. The sovereign grant totaled 86.3 million pounds, or $113.7 million, last year.

The palace issued a 159-page report on spending from that amount, which included costs for a major renovation of the palace. Charles previously released details of taxes paid on his personal income while serving as Prince of Wales. Queen Elizabeth II died in 2022, after which Charles ascended the throne. His mother began paying taxes voluntarily in 1993.

Charles has a personal fortune valued at 680 million pounds, or $896 million, placing him at No. 230 on the Sunday Times’ annual list of Britain’s richest people. The king’s private income derives mainly from Balmoral estate, which covers more than 50,000 acres in Scotland, and Sandringham estate, which spans 20,000 acres on England’s east coast.

He does not pay tax on the sovereign grant or income used for official duties. Prince William is expected to release his personal tax details during a separate briefing. Prince William’s primary private income comes from the Duchy of Cornwall, which owns about 130,000 acres and reported a profit of 22.9 million pounds, or $30.

The moves follow months of scrutiny over the affairs of Andrew Mountbatten-Windsor, who was stripped of his titles in 2025 and is under investigation for misconduct in public office. Mountbatten-Windsor has been required to leave a royal estate for which he paid no rent.