King Charles III will publish his personal tax bill in the United Kingdom, with the disclosure due alongside the annual royal financial accounts on Thursday. The move, billed as a historic first for a British monarch, is designed to enhance transparency around the sovereign’s finances and respond to sustained scrutiny of royal funding and tax arrangements. Last update: 22 June 2026.
The palace framed the disclosure as part of an ongoing modernization effort intended to explain all elements of royal finances in a way that improves clarity and accessibility. The decision arrives amid continuing public interest following recent scandals involving other royals and as oversight of royal assets intensifies, including an inquiry by the Public Accounts Committee into property and leases tied to the Crown Estate.
Disclosure plan and timing
The publication will set out the King’s personal tax position for the 2026–25 financial year, covering income streams beyond official public funding. While monarchs are not legally required to pay income tax, capital gains tax, or inheritance tax, Charles has chosen to do so voluntarily, in line with the Memorandum of Understanding on Royal Taxation 2026. The disclosure is intended to establish a new precedent for openness by detailing payments on profits and other personal income sources.
The palace stated that the information will be included within the annual accounts, consolidating the major components of royal finances in one place for public review. The timing aligns the personal tax disclosure with the release of figures for the Sovereign Grant creating a comprehensive snapshot of both public funding and private income that contribute to the monarchy’s operations and obligations.
Income sources and voluntary taxation
The King’s taxable income includes profits from the Duchy of Lancaster personal investments, and revenues from private estates such as Sandringham and Balmoral. The Duchy of Lancaster, a diversified portfolio of land, property, and financial assets, generated approximately £26.8 million in the 2026–25 year, with around £24 million in profits recorded the previous year forming part of the voluntary tax base. These private revenues fund personal expenses and some official duties not covered by public money.
Voluntary payments of income tax and capital gains tax by the monarch have been in place since 1993, reflecting longstanding expectations of accountability. As heir, the Prince of Wales similarly pays tax on profits from the Duchy of Cornwall. The estates of Balmoral and Sandringham were inherited under a long-standing government arrangement that exempts transfers between sovereigns from inheritance tax; ongoing income from these properties is expected to be reflected in the King’s disclosure.
Sovereign Grant review and wider scrutiny
The disclosure coincides with publication of the latest data on the Sovereign Grant the annual public funding that covers staff salaries, official travel, property maintenance, and other costs of the Royal Household. The grant has reached a record £137.9 million, supported by a temporary uplift for Buckingham Palace renovations. Separate accounts indicate the grant totalled £132.1 million for the 2026–26 financial year, with officials preparing a reduction as part of a review by the Treasury, Downing Street, and the Royal Household to keep the formula aligned with public service priorities.
Parliamentary scrutiny has also expanded, with the Public Accounts Committee planning to examine royal property arrangements and leases associated with the Crown Estate. The palace has presented the King’s tax disclosure as complementary to this oversight, stating that the aim is to foster “wider understanding of our accountability” and to make complex financial elements more accessible. The move is positioned to standardize disclosures going forward if adopted as a recurring practice within the annual report.
By setting out taxable income from the Duchy of Lancaster personal investments, and private estates, the King’s accounts are expected to itemize voluntary payments made under the current framework and to clarify the boundary between public funds and private resources. Officials indicated that the package will explain how private income supports duties not met by the Sovereign Grant while the grant itself continues to finance official engagements and property upkeep. The palace signalled that future reports will maintain this structure, reinforcing a permanent shift toward transparency.
