The Australian Tax Office has moved to wind up Newcastle's NRL and A-League teams, the Knights and Jets, because of debts of $2.7 million.
Nathan Tinkler's Hunter Sports Group is also being targeted in the ATO action.
The ATO's deputy commissioner filed documents with the Federal Court in Sydney yesterday.
They show the Knights have debts of $1.7 million, the Jets owe just over $1 million and HSG has debts of $184,000.
The two clubs and their parent company were given notice of the debts in September, but failed to pay by the 21-day deadline.
A hearing has been set down for February 20 next year.