A group of around 20 PwC partners are allegedly preparing to campaign the firm over a "lack of accountability" in tax leaks scandal.

Disgraced consultancy PwC is refusing to reveal the “terms of reference” — the instructions it set — for its secret internal investigation into its decade-long tax leaks affair.

Disgraced consultancy PwC has been given another major Federal Government contract - this time a $164,000 deal with the Department of Education.

The private company of the man who was CEO of PwC Australia during the entire tax leaks affair has received over $6.2 million in taxpayer funds in just the past two years.