A decision on the Victorian government's continued use of beleaguered consultancy giant PwC won't be made until an independent review concludes.

Former PwC partner Peter-John Collins was caught sharing confidential federal government tax policy information with other partners and staff, sparking the review of the firm's Australian operations.

Mr Andrews said the secretary of the Department of Premier and Cabinet had sought assurances from PwC over the scandal, and he is confident the consultancy hasn't leaked confidential information from his government.

"We will wait to see what the Commonwealth government does here," he told reporters at Victorian parliament on Thursday.

PwC was paid $15.29 million by the Victorian government last financial year, the second most for consultancies behind KPMG.

Since coming to power in 2014, the Andrews Labor government's annual spending on consultancies has almost tripled from $59m to $176.89m.

Mr Collins was found sharing Treasury intel on measures to improve tax laws, including rules to stop multinationals avoiding tax by shifting profits from Australia to tax and secrecy havens.

"To think that someone would sign a confidentiality agreement, so essentially be working for the gamekeeper, and then be providing all of that work product to the poacher ... that's wrong," Mr Andrews said.

The Tax Practitioners Board banned Mr Collins from the profession for two years, and chief executive officer Tom Seymour has since stepped down from his role.

Former Telstra boss Ziggy Switkowski was appointed to lead the independent review earlier this week.