His attorney says Perez committed no wrongdoing and will contest the board's claims.
The state board that investigates claims of judicial misconduct has accused Minnesota's top tax court judge of routinely delaying rulings.
The Board on Judicial Standards filed a complaint Tuesday naming George Perez. Perez was appointed to the Minnesota Tax Court in 1997 and has been chief judge since 2001.
The St. Paul Pioneer Press (http://bit.ly/V0Wth5) reports the complaint alleges Perez routinely ignored state law that says a case must be decided within three months after being submitted to the court.
A message left for Perez at the tax court office was not immediately returned Wednesday. His attorney says Perez committed no wrongdoing and will contest the board's claims.
The Minnesota Tax Court hears appeals of orders issued by the state's revenue commissioner on local property tax valuations, classifications and exemptions.