The IMF Working Papers series is designed to make IMF staff research available to a wide audience. Almost 300 Working Papers are released each year, covering a wide range of theoretical and analytical topics, including balance of payments, monetary and fiscal issues, global liquidity, and...

This paper describes the result and the methodology of updating nominal and real effective exchange rate weights on the basis of trade data over 1999-2001. The underlying framework is an updated version of the IMF''s current effective exchange rate calculation, which uses weights largely based...