Fake wellness blogger Belle Gibson has been ordered to pay $30,000 in prosecution costs, with a further six-figure penalty possible, in a case brought by Consumer Affairs Victoria.

Ms Gibson could be jailed if she fails to pay $30,000 in prosecution costs within 60 days, as ordered by the Federal Court.

Justice Debra Mortimer last month found the 25-year-old and her company Inkerman Road Nominees guilty of misleading and deceptive conduct.

The company, which has since shut down, made $420,000 from sales of The Whole Pantry cookbook and smart phone application.

Justice Mortimer said Ms Gibson may have been under "some kind of delusion" when she falsely claimed she cured her brain cancer through natural remedies, despite never having the disease.

The court ordered Gibson to make a $30,000 contribution to Consumer Affairs Victoria towards the cost of the case.

She had 60 days to pay up otherwise she would be "liable to imprisonment, sequestration of property or other punishment," the court warned.

It was the first punishment imposed by the court.

She could be fined up to $220,000 and her company $1.1 million when a penalty is handed down at a later date.

Ms Gibson was also banned by the court from claiming that she was diagnosed with brain cancer, had four months to live and rejected conventional cancer treatments in favour of healing herself naturally.

The court found that she lied about donating a large portion of her profits to charities.

Ms Gibson did not attend court hearings.