New research by EY tax specialists has challenged Govt to "justify there's a real problem" before moving to change tax rules for multinational companies.

Businesses have been left in limbo by the Supreme Court ruling in Trustpower's tax dispute, an expert says. NZX-listed Trustpower

Trustpower may now have to pay nearly $15 million in tax and interest after losing a Supreme Court appeal.

Gareth Morgan has renewed calls for tax reforms after backing comments by businessman Stephen Jennings that the tax rules "favour the old and rich".

Aircraft purchases and corporate 'tax inversions' has sent Irish growth figures through the roof.

Uber used controversial and complicated international tax structures to reduce its NZ tax bill to around that of an average Kiwi worker, records show.

Queenstown Airport has lost a dispute with the Inland Revenue Department.

IRD yet to decide if it will oppose a bid from Graeme Hart's auto parts business to have its US bankruptcy protection recognised here.

COMMENT: Everyone should contribute a fair share of their wealth to the upkeep of the public services and well being of the country they choose to live in.

COMMENT: Imagine how much investment there would be if their returns were taxed entirely away. Who would be the losers? The multinationals? Or Kiwis?

The New Zealand branch of the pharmaceutical giant Pfizer sent tens of millions offshore while paying virtually no tax.

The Labour Party says says it has identified the Mossack Fonseca client who got approval to buy sensitive land in New Zealand.

Some of this country's biggest revenue generators are foreign-owned companies you may never have heard of.

Government announcements on pay-as-you-go rules and greater IRD disclosure powers welcomed by experts.

John Shewan, the Government appointed expert in charge of reviewing our tax regime, advised the Bahamas on exempting taxes.

New tax rules might be more convenient for small business, but IRD is getting new powers to share tax details with others.

Payments of provisional tax by small and medium businesses will be reformed under changes announced today.

Treasury expecting a deficit, but the Govt's tax take was up.

Prime Minister John Key is just one of many who say the amount of tax paid here by some multinational companies isn't fair.

COMMENT: John Key on trusts sounds a bit like a cracked record.

From soccer stars to Saudi kings, some of the wealthiest people in the world have been exposed by massive leak of tax papers.

COMMENT: Are the fortress walls of offshore secrecy now finally cracking?

New Zealand has been named in a massive Panamanian document leak as one of the havens used by companies around the world to avoid tax.

Huge leak of 11.5 million documents from a Panama law firm shows associates of Russian President have moved as much as US$2 billion through offshore accounts.

Multinational tax policy isn't easy or simple and it isn't usually sexy. But, like a lot of things, the internet has livened up the debate.

COMMENT: Australia's people have been given unprecedented access into the tax affairs of the nation's largest private companies.

Facebook and Google were included in a list of 20 companies assessed by the Herald as being the most aggressive in legally shifting profits out of NZ.

The debate over corporate tax is moving on - and fast. Matt Nippert reports.