Brian Oxman, who was once an attorney for Michael Jackson, will no longer be able to practice law in California.
The California Supreme Court has denied an appeal of a state bar ruling that found Oxman and his wife mixed clients' and personal funds to evade creditors.
The state bar said Oxman was disciplined previously and that was among reasons for seeking revocation of his license.
The allegations against Oxman did not involve the late pop star or his family.
Oxman was on Michael Jackson's molestation trial defence team until being dismissed in 2005.
He later represented the singer's father and appeared on talk shows as a legal expert.