King Charles III is expected to become the first British monarch to reveal his personal tax bill on Thursday as he responds to demands for greater transparency in royal finances after months of embarrassing headlines about his disgraced younger brother, the former Prince Andrew.

The information will be released during Buckingham Palace's annual briefing on the sovereign grant, the mechanism through which taxpayers fund the monarchy, British media reported over the weekend.

Last year, the palace published a 159-page report on how it spent the 86. 3 million pounds ($113. 7 million) it received from the Treasury, including funds for a major renovation of the palace.