Investigators are claiming that King Charles and Prince William ’s estates are bringing in a hefty income for the royals. Two U.K.

outlets, Channel 4’s Dispatches and the Sunday Times , alleged that The Duchies of Lancaster and Cornwall — which are the private properties for Charles, 75, and William, 42 — have received millions from the contracts with public bodies and charities. The outlets claimed that the estates are estimated to make £50 million ($64 million USD) in the future. The Duchy of Lancaster is the estate of the British sovereign and currently held by Charles.

It spans across England and Wales and includes urban developments, historic buildings, farmland and nature. The Duchy of Cornwall is the other estate meant for the eldest son of the reigning British monarch, which is currently the Prince of Wales. The investigation claimed that Charles and William are financially benefiting from the property with ties to their charitable organizations.

The Duchy of Cornwall has received at least £22 million ($28 million USD) since 2005 from a share of rents paid to the Camelford House complex. Dispatches’ reporting alleged that St John’s Ambulance — a nonprofit that Charles is a patron of — previously paid the Duchy of Cornwall almost £60,000 ($64,000 USD) for use of its land. The outlet also claimed that the estate is also receiving £11.

4 million ($14.6 miliion USD) to store electric ambulances through a deal with Guy’s and St Thomas’ NHS Trust. Mea.