A Darwin-based charity that helps provide food for the poor claims it has been undermined by "dishonest" comments from Northern Territory Chief Minister Adam Giles.

Foodbank Northern Territory (FBNT) said it helped provide more than 200,000 meals for the poor last year, but may have to close its doors unless it can find new funding before the end of March.

"The only reason we made it through last year is because we got a loan from a Baptist Care elsewhere in Australia who eventually turned around and forgave that loan even though they were struggling," FBNT chief executive Peter Fisher said.

The not-for-profit organisation has been lobbying the NT Government for more money, but when asked on Darwin radio station Mix 104.9 if he would boost funding, Mr Giles said the charity was not able to acquit money well.

"When you get government contracts one thing you have to do is acquit your government contract," Mr Giles said.

"Foodbank haven't been very good at acquitting it, showing where they've been spending the money. Now that's a concern when you've got taxpayers' money," Mr Giles said.

Mr Fisher said that statement undermined his organisation's work.

"The Chief Minister has made several comments about Foodbank which really tends to, in my mind, undermine our integrity," Mr Fisher said.

"The Chief Minister himself is talking about us getting support from corporates, which we do already, but with other people out there in the community, and it makes it very difficult if our integrity is questioned in that way," he said.

He said FBNT had always filled out the required paperwork to show where their funding had gone.

"We've even had to answer questions about the cost of our rubbish removal and are there not other people who use our rubbish bins and they should be contributing to it as well," Mr Fisher said.

Giles' comments 'dishonest and misrepresent the facts'

In a letter to his colleagues, Mr Fisher said Mr Giles' comments could erode confidence in the charity.

"The comments are not only dishonest and misrepresent the facts, but they also cast a significant slur on FBNT," the letter said.

In a statement a spokeswoman for Mr Giles said the NT Government had been "extremely supportive" of Foodbank during the past three years.

The Government last year agreed to provide Foodbank with $160,000 for 2015-16, the statement said.

"It was also agreed that DCM [Department of Chief Minister] and the Department of Business [DoB], with the full support of BCNT [Baptist Care NT], would engage a consultant to conduct a full business diagnostic to identify a viable funding model for BCNT, with options regarding the NT Government role in the future funding of Foodbank NT," it said.

"The business diagnostic has been completed and there is considerable work needed to be undertaken before the business is seen to be operating sustainably into the future," it said.

NT Opposition leader Michael Gunner on Thursday pledged to provide $1.4 million over five years to support FoodBank NT.

"A properly funded Foodbank NT means fewer people will go hungry, more kids will eat breakfast before school, and 100 organisations will have that critical support," the NT Labor leader said in a statement.

Mr Giles later hit back, saying Labor's policy was made "on-the-run".

"The former Labor Government knocked back a similar funding request from Foodbank in 2010 while the Country Liberals increased their funding when we came to office," Mr Giles said.

"The reality is both the former Labor government and the current Country Liberals Government have been attempting to help Foodbank NT improve their business practices for more than five years," he said.