This Guide for identifying, assessing and reporting on subsidies in the fisheries sector provides detailed and practical advice to fisheries professionals who identify, assess or report on subsidies in the fisheries sector. The guide covers the following topics: preparation for a study of fishery subsidies; definition of a fisheries subsidy and the various categories of subsidies; use of different assessment methods and measurement factors; the relative importance of fishery subsidies; suggestions for conducting comparative analyses; and reporting.