The purpose of the study is to identify and recommend appropriate methodologies to measure the cost of gender-based and intimate partner violence in EU-28 Member States. To define gender-based and intimate partner violence for this study we draw on the definitions advanced by the Declaration on the Elimination of Violence Against Women (UN 1993) and Council of Europe (2011) respectively. These authorities focus on the forms of violence, violence perpetrated by intimate partners and other family members (domestic violence) and sexual violence that are disproportionality perpetrated against and disproportionality impact women