Prince publishes financial accounts
The Prince of Wales is due to publish his financial accounts.
The figures will give details of his income and expenditure, funds from the Duchy of Cornwall - the landed estate given to the heir to the throne - and tax bill during the 2011-12 financial year.
Figures from the 2010-11 accounts, published last year, revealed the Prince's funding from the taxpayer increased by nearly 18%.
Charles's income from grants-in-aid and government departments rose 17.9% from £1,664,000 to £1,962,000 during 2010-11.
He also saw his private funding from the Duchy of Cornwall go up by nearly 4% to £17,796,000, during the same period.
The Prince's tax bill soared by more than £900,000, rising 26.2% to £4,398,000.
The cost of the Prince's official travel by air and rail will be included in Friday's figures. The journeys are paid for by the taxpayer through grants-in-aid.
During the past financial year the Prince and the Duchess of Cornwall toured Norway, Sweden and Denmark in March this year, and last autumn visited South Africa and Tanzania, while Charles visited Kuwait and Qatar.