By Christian Hawkesby*
The New Zealand trade weighted index (TWI) reached a post GFC high today of 77.0, and is now only slightly below an all-time high.
This move is part of a wider trend in global financial markets, which will have a significant impact on the mix of economic conditions in New Zealand, and increases the chance of the RBNZ using macro-prudential tools.
In recent months, movements in foreign exchange markets have caused tensions to rise globally.
The number of articles in Bloomberg mentioning “currency war” have increased exponentially, totalling 160 in January compared to 10 or 20 on average through 2012 (Chart1).
Earlier in the week, the G7 published a joint communiqué aimed at calming tensions, but it only resulted in even greater volatility, confusion, and embarrassing clarifications.
The foreign exchange market will undoubtedly be a hot topic this year.
Put simply, these tensions have arisen from countries pursuing economic policies to meet domestic objectives within their domestic mandates.
In particular, the US and UK have been attempting to generate a sustained economic recovery using an increasingly inventive combination of zero interest rates, commitment to keep rates low for longer, and unprecedented balance sheet expansions (Quantitative Easing).

Whether deliberate or not, these actions will most likely devalue their currencies relative to other countries not undertaking these exceptional measures.
So New Zealand and Australia (and a number of vocal developing countries) have found their currencies strengthening sharply against the US dollar, GB pound, euro, and yen.
It has been a powerful global force to stand in the way of, and it is understandable when Bill English is quoted on Bloomberg saying there is very little that can be done to stop the NZ appreciating.
So New Zealand is left to live with the consequences of these global trends, whether it is a currency war or not.
i. A higher NZ dollar suppresses inflation on traded goods and hurts export and import competing industries.
ii. All else equal, that means there is more scope for NZ interest rates to be kept lower for longer to help the domestically-focused part of the economy to grow faster and take up the slack.
In other words, the mix of economic conditions is forced to change in favour of consumption and investment, and it seems that the NZ domestic economy is accelerating.
With the RBNZ already nervous about life remerging in the housing market, that may be an uncomfortable consequence to life with. It may act as a further catalyst for the RBNZ to introduce macro-prudential tools to head off the housing market overheating.
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Christian Hawkesby is a director of Harbour Asset Management and head of their fixed interest division. You can contact him here »
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