In the wake of Queen Elizabeth II's death last Thursday, King Charles III inherited a realm of wealth and he doesn't have to pay inheritance tax on any of it. Driving the news: A rule introduced in 1993 by the U.K. government safeguards the royal family's assets from being wiped out if two monarchs were to die in a short period of time, Business Insider reports. The Queen Mother passed away 20 years ago in 2002, exercising the first part of the provision. By the numbers: Charles inherits the Duchy of Lancaster estate, which racked in $27 million in revenue for the Queen last year. The Crown Estate, estimated to be ... (full story)