Finance Minister Bill English said the Crown accounts show the return to surplus is a challenging task, and requires fiscal discipline.
"These figures will be factored into next month's Budget and reinforce the need for restraint in government spending," English said. "They also confirm that there will be no capacity for reckless spending promises ahead of the election later this year."
The lower-than-expected tax take remained across the board, with total income tax accrued 3 percent lower at $24.6 billion. Of that, income tax was 1.5 percent below forecast at $18.6 billion, corporate tax was 8.7 percent short of expectations at $4.73 billion, and other income tax was 2.2 percent below target at $1.27 billion.
Goods and services tax was 3.2 percent below forecast at $10.55 billion, and tobacco excise was 9.1 percent lower than expected at $1.03 billion. Dividend revenue was $96 million below forecast at $384 million.
The Treasury said the lower corporate tax take was largely due to later than expected filings of final 2013 tax returns, which should turnaround by the end of June. Still, weak profits pose a downside risk, it said.
The smaller tax collection weighed on the Crown's residual cash position, which was a deficit of $3.95 billion, more than the $3.28 billion expected. That led a bigger than expected net debt of $60.04 billion or 27.1 percent of gross domestic product, as at Feb. 28, compared to the forecast $59.6 billion, or 26.9 percent of GDP.
The Crown's total expenses were $59 billion in the eight month period, compared to the forecast $59.63 billion.
The operating balance, which includes movements in the Crown's investment portfolios and actuarial adjustments, was a surplus of $3.72 billion, $891 million ahead of the December forecast, due to unrealised investment gains from the likes of the New Zealand Superannuation Fund. That compares with a surplus of $4.29 billion a year earlier.