Elton has surprised many by issuing a High Court writ against long-term business manager Bob Halley.
The 61-year-old has been with the songwriter for three decades, acting in a variety of roles, personal assistant and chauffeur among them. He even appeared in the background, as a man getting arrested, on the cover of Songs From The West Coast.
No details have been revealed yet. However, this isn't the first time Elton has taken a close aide to court.
In 2000 he spent £8million on a High Court battle in which he claimed ex-manager John Reid mishandled his business affairs.