King Charles is reportedly refusing to pay Prince Andrew's £32,000-a-year bill for a healing guru.
The Duke of York has reportedly submitted the claim to the Privy Purse as a royal expense having sought the help of a yoga teacher.
However, the claim has reportedly been denied by the King, who is said to have told Andrew the bill will need to be covered using his own money.
It comes after sources claimed Andrew, 63, had been using the Indian yogi for a number of years and helps with his chanting, massages and holistic therapy in the privacy of his mansion.
The healer has reportedly enjoyed month-long stays at a time at the £30million Royal Lodge in Windsor.
His claim submission comes after years of Prince Andrew's mother, Queen Elizabeth, signing off the expenses, reports The Sun.
However Charles, who became King in September after the Queen's death, is scrutinising claims put forward having now been handed control on the Duchy of Lancaster’s annual £24million income.
The source said: “While the Queen was always happy to indulge her son over the years, Charles is far less inclined to fund such indulgences particularly in an era of a cost-of-living crisis.
“Families are struggling and would rightly baulk at the idea of tens of thousands paid to an Indian guru to provide holistic treatment to a non-working royal living in his grace and favour mansion.
“This time the King saw the bill for the healer submitted by Andrew to the Privy Purse and thought his brother was having a laugh."
It comes days after reports Andrew could be banned from wearing ceremonial robes to the King's coronation on May 6.
The Duke of York is said to be furious after being kept in the dark over a decision on whether he can dress in the grand velvet robes and glistening insignia denoting his position as a Knight of the Garter.
Charles is reportedly torn over whether to allow his disgraced brother to don the theatrical regalia after Andrew was forced to step back from royal duties following a sex abuse scandal.
The Duke last year paid £12million in an out of court settlement to his accuser, Virginia Giuffre, and denies all allegations.
He was subsequently blocked from appearing alongside the late Queen in her final appearance at the traditional Garter Day procession in Windsor.
The King’s coronation on May 6 will be a designated “Collar Day” meaning members of the Order of the Garter, the oldest and most senior Order of Chivalry in Britain, may wear the regalia and collar that signifies the British orders of knighthood they belong to.
Andrew now faces being ordered to wear a lounge suit after he was stripped of his military appointment Colonel of the Grenadier Guards, although he remains a Vice Admiral because of his service in the Royal Navy.
One source said the Duke of York had been “left completely in the dark” over his role and required dress for the coronation, despite other attendees being notified ahead of time.
The royal insider added: “Andrew is furious. He’s already not playing a part and now he feels he is being disrespected and dictated to over something he is fully entitled to (wear).”
The King and Prince William reacted with fury after discovering that the Duke was set to appear in his full outfit for the public procession last June and lobbied Her Majesty to overturn the decision.