Home > Exchange Rates, Trade > What is the Trade Weighted Index?

What is the Trade Weighted Index?

Trade Weighted Index (T.W.I)

  • An index that measures the value of $NZ in relationship to a group (or “basket”) of other currencies. The currencies included are from NZ’s major export markets i.e. Australia, USA, Japan, Euro area, UK and China. – $A, $US, ¥, €, £ RMB
  • Each of the currencies included in the TWI is “weighted” according to how important exports to that country are ( = % of total exports)
  • From the TWI we can see if the $NZ has appreciated or depreciated against our major trading partners currencies overall.

TWI - NZ 17.png

The interpretation of the effective exchange rate is that if the index rises, other things being equal, the purchasing power of that currency also rises (the currency strengthened against those of the country’s or area’s trading partners). That will reduce the cost of imports but will undermine the competitiveness of exports.

TWI NZ

Internationally, global growth is continuing to improve, suggesting that excess global supply is easing. However, offshore political uncertainty has grown and continues to cast a shadow on NZ’s inflation outlook. Further, the NZ Trade Weighted Index (TWI) is hovering around 78 again, in part due to NZ economic fundamentals but also in part due to the above offshore political events.

Source: ASB Bank

 

 

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