Money-hungry Prince Harry is set to receive a hefty inheritance upon his 40th birthday in September – and it is all thanks to a secret deal he struck with Queen Elizabeth before her death.

The melodramatic Duke of Sussex is poised to receive a huge $8.5 million payout when he turns 40 on September 15.

A royal insider familiar with the figure also revealed Harry is set to receive more than his older brother, Prince William, collected upon his milestone 40th birthday back in June 2022.

The source explained: “William will benefit from the vast wealth of the Duchy of Cornwall, a private estate that funds the public, charitable, and private activities of the king’s heir.

“As a result, Harry is likely to receive slightly more than half of the [$15 million] allocated for the brothers.”

According to the royal insider, the $8.5 million for Prince Harry is part of a larger $90 million trust fund left behind for the royal family by Queen Elizabeth upon her passing at 96 years old in September 2022.

News of Harry’s upcoming $8.5 million payday comes after he and his wife, Meghan Markle, 42, ditched their royal duties and left The Firm in January 2020.

The pair – currently worth an estimated $60 million – claimed they wanted to “work to become financially independent.”

It was then revealed Harry and Meghan’s fortune was the result of huge tax advantages given to the royal renegade’s relatives – namely his cancer-stricken father, King Charles, 75.

Accountant Mike Warburton once revealed Harry’s main source of income was his father’s previous role as the Duchy of Cornwall – a title since granted to Prince William upon King Charles’ ascension to head of the monarchy.