Prince William and his younger brother Prince Harry inherited £13m in trust and after tax from their late mother, Diana, Princess of Wales. Since the age of 25, Prince William has enjoyed a lavish income from the £6.5m capital left to him by his mother, plus money from the estate of his great-grandmother the Queen's mother who died in 2002. He also earns a decent salary as an officer in the Royal Air Force (RAF) - as flight lieutenant,he earns £37,170 a year - is given an allowance from his father and from his own income from the Duchy of Cornwall estate. And should his father pre-decease, his income will go stratospheric when the whole of that income is transferred to him. Investment income and  inheritance make his net worth at $40 million according to WealthX.

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