News that the Crown Estate returned record profits of £285m last year means the Queen is expected to receive a further £2m in public funding next year. But just how rich is the Queen and where does her wealth come from?
Despite the fact that many details of the Queen's income are released publicly, her exact wealth is not known, reports BBC online.
That is because the Queen is not required to reveal her private finances. According to the Sunday Times Rich List 2015, her estimated fortune is £340m, up £10m from last year.
What is known about the Queen's wealth can be broadly divided between her private income and funding given to her, as the reigning monarch, by the government.
The main source of the Queen's public income comes from the Sovereign Grant - a fixed percentage of the profits made by the Crown Estate.
The Crown Estate dates back to 1760 when George III reached an agreement with the government that surplus revenue from the crown's lands would go to the Treasury.
In return for this, the King had no longer to pay for the cost of civil government and debts accrued by previous monarchs and would receive a fixed annual payment.
Since then, every succeeding monarch has renewed the arrangement. Today the Crown Estate is an independent commercial property business, with one of the largest property portfolios in the UK and a capital value at a historic high of £11.5bn - up 16.1% on 2014.
The majority of the portfolio's assets are in London, but the estate also owns property in Scotland, Wales and Northern Ireland.
Holdings include Windsor Great Park and Ascot racecourse, but the majority of the portfolio is made up of residential property, commercial offices, shops and business and retail parks, and includes almost all of Regent Street in London's West End.