In recent years, macroeconomic policy formulation has moved to the more explicit use of statistics as a growing number of countries adopt inflation targeting as part of their monetary policy framework. This publication contains a number of reports presented at a seminar held in Washington D.C. in February 2002 to identify common statistical issues and to explore the experience of central banks and national statistical agencies in this regard. The importance of developing new forms of collaboration emerged as a central theme of the seminar.