For the first time in modern British history, the monarch will reveal exactly how much income tax he pays, with King Charles voluntarily disclosing his personal tax bill as part of a push for greater transparency. The decision, announced by Buckingham Palace in June 2026, means the King will publish his total tax payments for the 2024-25 financial year alongside other royal financial reports. This includes tax on income from the Duchy of Lancaster, personal investments, and private estates such as Sandringham and Balmoral. While monarchs are not legally obliged to pay income tax, inheritance tax, or capital gains tax, the King has chosen to pay them voluntarily.
The King's tax information will be released as part of a new annual report aimed at increasing “clarity and accessibility” of royal finances, according to a Buckingham Palace spokesman. The spokesman said the move was at the King's own express wish and continues a practice he followed as Prince of Wales, when he published his tax returns. However, his son, Prince William, has not disclosed how much tax he pays on his income from the Duchy of Cornwall, a billion-pound estate. The Duchy of Lancaster, which provides much of the monarch's personal income, generated profits of about £24m in 2024-25, according to BBC sources, while the Guardian reports the figure as £26.8m. The King also receives income from his private estates and investments.
“Explains King Charles's decision to publish his tax bill and what it means for royal transparency.”
Background: Why is this happening now? The move comes after years of calls for more openness about royal finances, particularly following scandals involving Prince Andrew. MPs had demanded greater transparency. The King's decision aligns with a broader modernisation drive within the monarchy. The Sovereign Grant, the annual public funding for the royal household, has risen to a record £137.9m, partly due to renovations at Buckingham Palace. A Treasury review is expected to recommend the first reduction in the grant since it was introduced in 2012. The King's voluntary payment includes income tax on his private income and capital gains tax on relevant assets, as laid out in a 2023 Memorandum of Understanding on Royal Taxation agreed with the government.
Why it matters for UK readers: The disclosure offers UK taxpayers a clearer picture of how the monarchy is financed and how much tax the King pays on his private wealth. It also puts pressure on Prince William to follow his father's example. The Sovereign Grant is a public expense, so understanding the monarch's personal tax contributions helps assess the net cost of the monarchy. Additionally, the King's decision sets a precedent for transparency that may influence future monarchs. The report will be published annually, providing ongoing insight into royal finances.
Q: Is the King legally required to pay tax? No. Monarchs are exempt from income tax, inheritance tax on assets received from a previous monarch, and capital gains tax. However, the King voluntarily pays income tax and capital gains tax on private asset sales.
Q: What does the Duchy of Lancaster provide? The Duchy of Lancaster is a private portfolio of land, investments, and properties that provides the monarch with an annual income. In 2024-25, that income was reported as £24m or £26.8m depending on the source.
Q: Will Prince William also publish his tax returns? Not currently. Prince William has not disclosed the amount of tax he pays on his Duchy of Cornwall income since becoming Prince of Wales. The King's decision increases pressure on him to do so.
What happens next: The King's tax details for 2024-25 will be published alongside the Sovereign Grant accounts and a new royal household report. His 2025-26 tax details will follow next year. MPs will have an opportunity to debate the Sovereign Grant when related legislation comes before Parliament. The Treasury, Downing Street, and the Royal Household are reviewing the grant, with a first reduction expected.