Under the changes, tax promoter penalties will be extended to large multinational firms and the maximum fine for breaches will be increased from $7.8 million to as much as $780 million.
ATO officials will have greater discretion to apply promoter penalty laws and whistleblowers will get additional protection.
The TPB will also get new powers to make public information about investigations and decisions, and will have up to two years to complete complex investigations.
Officials will also be allowed to share protected information with prescribed professional disciplinary bodies if they suspect actions may constitute a breach of the relevant professional codes or ethical standards.
Mr Jones said the government was determined not to allow private firms to undermine trust and confidence in the tax system ever again.
“The PwC scandal exposed severe shortcomings in Australia’s regulatory
frameworks, and that undermines community confidence in our tax system,” he said.
“It showed that it is not only the multinational companies, but also their tax advisers, that need to be held accountable for their actions.
“This bill will crack down on tax practitioner misconduct and rebuild public confidence in the systems and structures that keep our tax system and capital markets strong.”
Parliament will also pass laws to stop partners and executives with financial links to the big four firms from being appointed to the TPB.
Further amendments will implement a cap on the use of deductions under the Petroleum Resource Rent Tax, levied on offshore gas and petroleum producers.
The proportion of PRRT assessable income that can be offset by deductions will be limited to 90 per cent from July 2023, as flagged in the federal budget.
Treasurer Jim Chalmers said the changes would ensure offshore LNG producers paid about $2.4 billion more in tax over the four-year forward estimates.
“These reforms deliver Australians a fairer return from the nation’s natural resources, provide certainty to industry and ensure Australia remains a reliable trade and investment partner,” Dr Chalmers said.