Labour will be watching the government "like a hawk" over MediaWorks tax dispute because of past treatment for the media company which owns TV3 and RadioLive.
Revenue spokesman David Cunliffe said Prime Minister John Key needs to guarantee there would be no political involvement in the outcome of MediaWorks' dealings with Inland Revenue.
A spokesman for the Prime Minister indicated there would be no involvement with MediaWorks' tax issues, and promised a more detailed response.
But Cunliffe was dismissive, pointing to past controversy which involved the government loaning MediaWorks $43 million that kept the company afloat during the global financial crisis.
The Government argued at the time in 2011 that the money was a deferred payment to help the radio industry during tough times in 2009 - not a loan.