Ginny Anderson has called out the National Party, saying the Opposition needs to focus on its own policies rather than fuelling rumours about Labour's.
Criticism is flying over Labour's rumoured plan to drop GST from fruit and vegetables, according to National citing a leak within the Government.
Labour leader Chris Hipkins has refused to confirm nor deny the policy.
National MP Erica Stanford told AM the unconfirmed policy would be another tough pill for Labour finance spokesperson Grant Robertson to swallow - given he'd publicly said it wasn't a good idea.
"This whole thing has a got a hint of desperation about it," Stanford said.
Labour minister Andersen, appearing on AM alongside Stanford, responded: "I think it's interesting that National's spent more time talking about other parties' policies than they do their own, and so it's a nice fairytale to hear all these stories about what we've evidently been doing in caucus.
"It's a good example of why National don't have any policies if they're trying to announce parties' policies… Maybe they should come up with their own policies on tax because no one seems to know what they are," Andersen said, refusing to confirm or deny Labour's policy.
National's finance spokesperson Nicola Willis is the MP claiming to have received the leak from Labour.
Earlier on Friday, she told AM: "I understand why people want to know [who the source is] but I'm not going to go into who it is, but what I will say is I'm confident in the information that I've received and people can see that this week, Labour has been leaking like a sieve."
Andersen said she wasn't the leak and reiterated no policy had been announced.
"We haven't said anything - there's no tax policy announced," she said.
"That's not our tax policy because we haven't announced our tax policy."
A Newshub-Reid Research poll last year found 76.6 percent of people were in favour of scrapping GST from all food.
Labour campaigned on removing GST from fruit and vegetables in 2011 but later dumped the policy. The rumoured rebirth of the policy comes despite Hipkins ruling it out earlier this year.
The Tax Working Group in 2018 said removing GST from food and drink would benefit higher-income households more than those on lower incomes.
