The New Zealand dollar needs to be 15 per cent lower to bring the nation's current account deficit to a more sustainable level, according to the International Monetary Fund.
New Zealand's external vulnerability is cited as the key medium-term issue for the country, which will need a better national savings rate and reduced reliance by banks on foreign funding, according to the IMF's concluding statement on the economy. That reliance on global funding assumes the Canterbury rebuild gathers pace and global interest rates get back to more normal levels.
The global lending agency sees New Zealand's current account deficit rising to 7.1 per cent of gross domestic product and net external liabilities to 84.8 per cent of GDP by 2016. That's worse than the Treasury's latest forecasts for a 6.9 per cent current account deficit and 80.8 per cent net foreign liability deficit in the 2016 March year.
"Staff analysis suggests that the New Zealand dollar is currently stronger than is consistent with a level of the current account deficit that is more sustainable over the long term," the report said. To stabilise external liabilities at the 2009 level, "the New Zealand dollar would need to be about 15 per cent weaker than its current level."
New Zealand's trade-weighted index fell to 69.83 this morning from 70.08 yesterday. The Budget economic forecasts project the TWI falling to 63.0 in 2016, the end of its forecast period.