Mr Dar, 67, had challenged his indictment in the Islamabad High Court (IHC) for possessing assets beyond his known sources of income.
Mr Dar's counsel Khawaja Harris asked the court that the indictment by the Accountability Court was against the law as it failed to give enough time to the defence lawyer to prepare the case.
The two-judge bench of Justice Athar Minallah and Justice Miangul Hassan Aurangzeb rejected the petition by observing that the Accountability Court is an independent forum and indictment could not be challenged.
Mr Dar was indicted on September 27 and the Accountability Court announced that it will start his trial on October 4.
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