A tycoon tax would end breaks for corporations profiting from Australian gas and spread the wealth among communities, under a Greens' plan.
The Greens pledged on Wednesday to end the "brain-dead, trickle-down" taxation of oil and gas under past governments if they win the balance of power at the May 21 election.
To encourage exploration, companies have been allowed to deduct all exploration expenses in areas covered by the Petroleum Resource Rent Tax (PRRT) regime that dates back to the 1980s.
