The reporting date of a review of the powers of the Independent Commission Against Corruption ordered by Premier Mike Baird has been pushed back to allow for "comprehensive consideration of the issues".

The review, ordered following a High Court decision which clarified the scope of the watchdog's powers, was due to be handed to the government on July 10.

Murray Gleeson, who is reviewing ICAC's powers. Credit:Andrew Quilty

But the review panel members - former High Court chief justice Murray Gleeson and senior barrister Bruce McClintock - have requested an extension and are now required to report by July 31.

"The panel requested an extension in the reporting date to allow for comprehensive consideration of the issues raised in the terms of reference," a spokesman for Mr Baird said.