"The stronger than originally expected performance of the business, along with the reduction in debt from the proceeds of a successful equity raise, means that Z is in a much better financial position than was expected when the relief was first sought," Z Energy said in a statement.
As well as the Z Energy chain, the company also owns the Caltex brand in New Zealand.
Shares in the company jumped nearly 6 per cent to $2.95, the highest level at which Z Energy has traded since January.
Chief executive Mike Bennetts said irrespective of trading being stronger than expected, the company had been focused on achieving $48 million in cost savings this year.
"Our execution of safe and reliable operations throughout the year has been excellent; together with better than expected profitability and strengthened balance sheet we're pleased to be able to share this performance with our shareholders," Bennetts said.
"Having navigated a challenging year we have turned our attention to options that generate additional value from the core business which will support distributions to shareholders in the years to come."
Despite stronger performance, this week Z Energy's shares dropped to $2.66, close to the levels hit in March 2020 during the height of market turmoil amid concern over the looming pandemic - the lowest the shares had ever traded since it floated in 2013.
Last week Forsyth Barr cut its target price on the company's shares by 20 per cent to $3.45 on the back of the draft Climate Change Commission report and the Government's decision "to implement a tough tailpipe emissions standard, the upshot being a material cut in long-term volumes".