It is anticipated that Prince Harry will collect approximately $10.5 million from the legacy that Queen Mother gave to him. This is due to the fact that the late monarch let her great-grandson accumulate the funds after he reached the age of 40.

There is a possibility that the Duke of Sussex will use the costly present to maintain his house in California, according to Grant Harrold, who was a former royal butler.

"No doubt it would be helpful because I think he leads a very expensive lifestyle. Hopefully he will put the money to good use. £8 million can disappear pretty fast in a place like Montecito. The couple have an enormous staff, a big house to maintain, and cars. Harry has to pay for his own security too, which we know he takes very seriously,” Grant told The New York Post.

According to OK! Magazine, royal experts believe that Prince William is becoming increasingly irritated by the fact that Prince Harry is receiving the money after publicly disparaging his family.

"[He feels] Harry has been unsupportive, scathing and hurtful towards the royal family. Prince Harry, on the contrary, will be elated that he has won the top prize as he has always felt inadequate to Prince William. King Charles will be mighty relieved that Prince Harry will now be financially comfortable for a while and not feel the need to write further memoirs attacking the royal family," Helena Chard said.

Prince Harry was given a larger inheritance than his brother, Prince William because it was anticipated that the Prince of Wales would inherit King Charles' extensive real estate portfolio. This is the reason why the Queen Mother decided to leave Prince Harry a larger inheritance than his brother.

"She knew that when Prince William became Prince of Wales, which he did when his father became king, he would inherit the Duchy of Cornwall, which now boasts assets of over $1 billion. In the meantime, the value of the trust has simply increased, Harry's share along with it,” Christopher Andersen shared.

Prior to her passing in 2002 and the infamous "Megxit" affair involving the Duke of Sussex, the former queen consort handed the account to Prince Harry.

"Purportedly Prince William isn’t happy that Prince Harry will be inheriting $8.5 million from his great-grandmother, the Queen Mother’s estate. It’s not so much that he resents the money in any way. But the Queen Mother couldn’t have anticipated what Prince Harry has done to the family. She loathed Wallis Simpson for the damage she did to the monarchy and their entire family with the abdication crisis," Hilary Fordwich claimed.

Despite the tension between Prince Harry and his relatives, the veteran gushed about entering a new decade.

“I was anxious about 30, I’m excited about 40. Whatever the age, my mission is to continue showing up and doing good in the world. Becoming a father of two incredibly kind and funny kids has given me a fresh perspective on life, as well as sharpening my focus in all my work. Being a dad is one of life’s greatest joys and has only made me more driven and more committed to making this world a better place,” Prince Harry previously told BBC.

Business Times has reached out to Prince Harry for comments.