Prime Minister John Key says the European debt crisis is the biggest threat to the New Zealand economy.
He said he was less confident now than at the time of the May 24 Budget that New Zealand would get back into surplus by 2014-15 but insisted: "We won't let that target slip lightly."
And Treasury officials were looking further into why Reserve Bank forecasters last week plumped for a return to surplus two years later, in 2016-17.
Mr Key was commenting on the election of pro-austerity parties in Greece which lessened the chances of Greece leaving the eurozone and deepening the crisis.
"In terms of what that means for New Zealand it doesn't really change anything. The European debt crisis remains the biggest threat to the New Zealand economy by some margin."