The tax leak scandal that embroiled consultancy firm PwC has been referred to the national anti-corruption body which has just opened its doors.

Greens senator Barbara Pocock has formally referred the matter to the National Anti-Corruption Commission, which is independent and has the authority to compel witnesses.

The consultancy firm has come under fire following revelations staff shared confidential tax information from the Treasury department to drum up new business.

The Australian Federal Police is already investigating the leak.

Senator Pocock said there were still many unanswered questions and the anti-corruption body would have the power to uncover key details.

‘We know too little’

“The PwC tax leaks scandal has been airing in public for the past five months and so far we know too little about who was at fault, who benefited and what consequences there will be,” she said.

The senator also said there were questions to be answered by government agencies including the role they played in uncovering the incident.

“While we welcome the AFP investigation to prosecute appropriate criminal charges, there are wider issues that need to be addressed to ensure that our systems of government are not open to corruption.”

The federal anti-corruption commission became operational on July 1.

-AAP