King Charles has made history by becoming the first British monarch to release their tax bill, handing over more than £30 million since he acceded to the throne.Buckingham Palace revealed he paid more than £12.9 million in 2024/25 to HMRC and a further £11.7 million the previous year, putting him among the country's top 100 taxpayers.His current accounts are still being audited so have not been publicly confirmed. He was crowned following the death of his mother in September 2022.Keeper of the Privy Purse, James Chalmers, said the request to reveal his combined income and capital gains had come personally from the King, who is determined to aid clarity and accessibility around royal finances which are under more scrutiny than ever.Prince William, who had until now refused to reveal how much tax he paid as heir to the throne - despite his father doing so when he was Prince of Wales - has also caved to the inevitable.In 2024/25 he paid £7.76 million to the taxman and a further £8.34 million in 2023-24.His private secretary, Ian Patrick, revealed Thursday that he had paid more than £20 million to HMRC since he became Prince of Wales, adding: 'The prince recognises the interest in these arrangements and the importance of appropriate transparency.'Last year William received a private income from the Duchy of Cornwall of £21.6 million.The Duchy is a billion-pound landed estate which covers 51,800 hectares across 19 counties, the profits of which fund the heir to the throne's public work and private outgoings. King Charles III and Queen Camilla say goodbye to Pope Leo XIV in the San Damaso Courtyard, in St Peter's Square, after attending the ecumenical service in the Sistine Chapel in Vatican City in 2025 Prince William, Prince Of Wales is welcomed by the Deputy Governor of Riyadh, Prince Mohammed bin Abdulrahman bin Abdulaziz as he arrives at King Khalid International Airport on day one of his first official visit to Saudi ArabiaWilliam pays income tax voluntarily at the highest rate on any net surplus once official expenditure has been deducted.Aides are still refusing to say what that expenditure is, however.William, 44, has also made clear he is determined to modernise the Duchy, having vowed to sell off 20 per cent of its landholdings over the next ten years and invest the money in sustainable issues and community housing.One individual he is still collecting rent from, however, is his own father.As Duke of Cornwall he leases the King's Highgrove, his beloved Gloucestershire estate, and charged Charles £503,711 in rent last year.William's Duchy of Cornwall accounts also reveal that following a public outcry over revelations he receives £1.5 million rent annually for abandoned Dartmoor Prison, he has now asked for the sum to be spent on regenerating the local community instead.There had been widespread anger that the Ministry of Justice was paying the money to the heir to the throne as part of a 25-year deal with the Duchy even though the jail has been empty since July 2024, due to toxic levels of radon gas, causing real financial hardship to the local community.It was a busy year for the Royal Family with the King and Queen conducting 708 engagements between them, with the rest of 'the firm' undertaking a further 1,565 in the UK and abroad, according to the annual Sovereign Grant Review.The royal residences hosted 827 events and 97,000 guests - up three thousand on the previous year - as part of the monarchy's attempts to widen access to the occupied royal palaces, as they are known.More than 700,000 paying visitors also walked through their doors.In line with the King's passion for sustainability, he has installed electric car charging points on the forecourt at Buckingham Palace itself and plans to replace royal vehicles with a largely electric fleet.