Prime Minister John Key says the target of returning to surplus in the 2014-15 year is getting harder to reach because of global economic conditions.
"But we are making decisions to ensure we get back to surplus by our target date of 2014-15," he said at his post-Cabinet press conference yesterday.
"It is important to meet that target because every year we are in deficit we have to borrow more to fund that."
That was why it was "highly likely" next month's Budget would be another "zero Budget", meaning no extra funding for new initiatives.
Any spending boosts, including those for education and health, would have to be funded by cuts from other areas "and tightening up tax loopholes and tax avoidance".