Businessman Graeme Wood has rejected suggestions he is considering pulling a multi-million dollar loan to the Guardian Australia news website.

Key points: Graeme Wood says claims he is considering pulling his loan to Guardian Australia are "bullshit"

Graeme Wood says claims he is considering pulling his loan to Guardian Australia are "bullshit" The website was set up in 2013, partly with Mr Wood's money

The website was set up in 2013, partly with Mr Wood's money Amount of investment is unclear

Guardian Australia was established in May 2013, thanks in part to a loan from the businessman and environmentalist.

On December 8 The Australian newspaper reported that the Guardian had until 2018 to turn a profit before Mr Wood "called in" his multi-million dollar loan.

But the founder of Wotif has strongly denied the suggestion.

Speaking exclusively to the ABC, Mr Wood was asked whether the website had been given two years to prove commercially viable.

"No, that's bullshit. Never," he said.

But he would not be drawn on the exact details of the financial arrangement.

"The arrangement that I have with the Guardian is my business and the Guardian's business, it's nobody else's business. I'm extremely happy with it and so are the Guardian," he said.

News website unlikely to be turning profit, expert says

The director of the Centre for Advancing Journalism in Melbourne, Margaret Simons, did not believe the news website was turning a profit.

"I doubt it's making money yet, and my understanding is that they've got a five-year plan to build a sustainable business," she said.

"While nobody knows for sure what the [online] business model of the future will be, the Guardian has been thinking about this more creatively and more seriously than most."

She said she believed Mr Wood's investment would have been a multi-million dollar contribution, and that Mr Wood saw the Guardian as an investment, unlike other previous projects.

"It [the Guardian] is ahead of its own targets, ahead of where it thought it would be in terms of both audience numbers and also revenue," she said.

It is understood Mr Wood has no say in the operating of the business.

Although the amount of Mr Wood's investment is unclear, the ABC understands there is no timeline for the debt to be repaid.