The reason why Prince Harry had to wait until his 40th birthday for his inheritance has been revealed

Prince Harry will be turning 40 later this year and is set to finally receive his inheritance.

Now, a prominent royal author has revealed why Harry had to wait until his 40th birthday, as well as how much he is inheriting, thanks to arrangements made by his late great-grandmother, Queen Elizabeth, the queen mother.

The late Queen Elizabeth II’s mother put $90 million into a trust fund for her family, writing that Prince William and Harry would inherit their shares when they reached their 40th birthdays.

According to Christopher Andersen, author of “The King,” there is a good reason why the pair had to wait four decades.

Speaking to Fox News he said, “Why 40? To a woman who nearly lived to be 102, one can only imagine that 40 seemed like the perfect age to come into some extra cash — when you’re young enough to appreciate it but also old enough, and hopefully wise enough, not to blow it."

“Of course, the princes’ great granny couldn’t have anticipated all the trouble Harry caused the rest of the family. I think she would have cut him out of [the trust] entirely had she known.”

Harry is reportedly set to inherit $8.5 million, which is more than William received on his 40th birthday, but Harry will still have to pay taxes on any commercial earnings, according to reports from the Mirror.

“Prince Harry is set to receive more money than Prince William because he is the spare,” Kinsey Schofield, host of the To Di For Daily podcast, told the outlet.

“The queen mother knew he would have fewer opportunities and responsibilities. It was a logical and thoughtful decision.”

“There will be no tensions as [the family] knew about this arrangement for decades. Prince William likely quietly inherited his share two summers ago when he turned 40,” Schofield added.