The European Handbook on Equality Data was published in 2007 as part of the action taken to support EU Member States to implement EU anti-discrimination legislation and to achieve progress towards equality. The objectives of this 2016 revision of the European handbook on equality data remain the same as in the version published in 2007: i. to analyse why and what kind of data should be gathered in relation to equality and discrimination (this data is called ‘equality data’ in this Handbook), and ii. to show how that data can be collected, and to issue recommendations in that regard. The... Handbook targets a wide audience, in particular all those who are interested and involved in how to build an evidence-based approach to promoting equality of treatment and combating discrimination on the basis of racial or ethnic origin, religion, belief, disability, age, gender identity or sexual orientation. This includes decision-makers, civil servants, members of equality groups, and those working for equality bodies and non-governmental organisations (NGOs). Like the 2007 Handbook, this revised version also aims to provide useful insights to those who are, or should be, involved in the collection of data, including statisticians, researchers and employers. The research project of which updating the 2007 Handbook is part showed that there have been quite a number of relevant developments since the 2007 Handbook was published which merit being addressed in a revised version. These developments relate to the fields of equality data legislation, protection of personal data, sources and comparability of data, issues of definition, classification and categorisation, data quality, dissemination and use of equality data, use of data in the justice system, equality data generated and used by NGOs and in qualitative research and, last but not least, diversity monitoring. This executive summary presents the main findings, trends and conclusions in each of these fields. It concludes with an overview of the recommendations that are based on the findings of the research on which this revised Handbook is based.