Treasury has announced the Government took in $772 million more tax than expected in the first 10 months of the fiscal year.
The Crown took in $45.09 billion in tax in the 10 months ended April 30, against a forecast of $44.32 billion based on the May 24 budget assumptions.
Core spending was 0.6 per cent below forecast at $56.13 billion. That led to a smaller operating deficit before gains and losses of $5.94 billion, against an expected shortfall of $7.36 billion.
"While this month's tax take has been boosted by better than expected GST and corporate results, revenue is still about $900 million below forecasts in the Treasury's pre-election update last October," Finance Minister Bill English said in a statement.
"These fluctuations in revenue reinforce the need for the Government to keep a firm control on its costs, so it can stay on track to surplus in 2014/15."