Introduction

Although the AD Agreement contains some guidance on the methodologies to be applied in calculating the margin of dumping, it does not provide comprehensive and detailed provisions to deal with all the issues involved. In some instances, the AD Agreement provides for different options and leaves it to investigating authorities to decide which methodology to apply. In some of those instances where the AD Agreement does not provide clear guidance, the practice of Members differs to a greater or lesser degree. An effort has been made to refer to the different practices of Members where the authors were aware of such practices. It is therefore not claimed that these references are complete, and is done without any reference to the WTO compatibility, or not, of such practices.