The $10 billion current account deficit for the full year is equivalent to 4.9 per cent of gross domestic product, the worst that ratio has been for two years.
It pushed the country's net international investment position - foreign claims on the economy, mainly debt, offset by New Zealand investment abroad - to $149 billion or 72.6 per cent of GDP. But that number is flattered by statisticians treating $12.8 billion of outstanding earthquake-related reinsurance claims as foreign assets until they are paid out. Excluding them, net foreign liabilities would be 78.9 per cent of GDP.
ANZ economist Mark Smith said the key driver of rising annual current account deficits had been the continued worsening of the goods trade surplus. The latest year's $2 billion surplus was the lowest in three years and reflected less favourable terms of trade, strengthening demand for imports and the high New Zealand dollar.
ASB economist Jane Turner expects the deficit to widen further over the coming year to 6.5 per cent of GDP as the decline in export commodity prices over the past year or more works its way through the trade balance and ongoing recovery in the domestic economy lifts the outflow of investment income.
"A wider deficit over the next year will highlight New Zealand's vulnerability to external financing," Turner said.
However there were encouraging signs a gradual rebalancing of the economy was taking place.
"The private sector via the financial system is gradually reducing its net foreign debt. The Government is still increasing its use of foreign debt, but that will also change in the long term once budget surpluses are eventually restored," she said.