The Crown posted an operating surplus of $1.71 billion in the six month period, beating the deficit of $541 million forecast, after the New Zealand Superannuation Fund and Accident Compensation Corporation's investment portfolio posted better than expected investment gains, and as the accident insurer reported an actuarial gain reflecting changes in the discount rate.
The discount rate is linked to the government bond rate and influences how ACC expects puts a dollar figure on future payments.
The investment gains were $1.29 billion ahead of expectations, while ACC's actuarial gain was $780 million.
Today's accounts show the company tax accrued in the period was 7.1 per cent below forecast at $3.13 billion, though non-resident withholding tax of $190 million was 17 per cent higher.
Personal income tax accrued was 1 per cent ahead of forecast at $11 billion, while other persons tax was 5.2 per cent above forecast at $2.3 billion. Goods and Services Tax after refunds was 1.4 per cent short of expectations at $7.07 billion.
The government's net debt of $59.1 billion, or 28.4 per cent of gross domestic product, was 2 per cent below the half-year forecast.