Queen Elizabeth II became Britain’s first monarch to pay income tax.

The Queen informed the Prime Minister, John Major, earlier that she wanted to change her tax arrangements. In previous years, Britain’s monarch was not expected to pay income tax, as they serve a duty to the country; however, Queen Elizabeth II thought it was correct to do so. At the time, there was an ever-growing worry from the public about the cost of having the royal family, so it’s possible it could’ve been related to this pressing issue.

Source