The displacement crisis of recent years is unprecedented: the UNHCR (2017b) estimate that a record 65 million people were forced to leave their homes because of violence, conflict or natural disasters in 2016. Europe has seen some of the effects of this, with a record number of arrivals in (Eurostat, 2017 and more than 10,000 lives lost in the attempt to cross the Mediterranean Sea (IOM, 2018). Amongst several policy responses, donors have announced large development aid packages as an attempt to address the 'root causes' of migration. This policy response has a long history (Carling & Talleraas, 2016), even if the scale of displacement is new. One recent example of high-profile ear-marked funds is the European Union Emergency Trust Fund for stability and addressing root causes of irregular migration and displaced persons in Africa (EUTF for Africa). The European Commission's (2016a) stated aim is to '...invest in long-term economic and social development, improving people's life and tackling the drivers of migration'. With over 4 billion euro already committed, this is a major initiative, but represents only part of a consistent strategy (Latek, 2016).This study asks whether that policy lever is effective, specifically: Has development aid reduced irregular migration to Italy? We only use one destination as there is limited comparability of national migration statistics (Raymer, Wiśniowski, Forster, Smith, & Bijak, 2013) and potentially large problems of double counting. There are three main entry points to Europe: Italy, Greece and Spain. We have chosen to study Italy as it has higher levels of irregular immigrants than Spain, and much more consistent flows than Greece (which saw a large spike in 2015). Two dependent variables are used, both of which capture flows: the number of asylum applicants and the number of apprehensions at border. By using both, we are able to test the robustness of insights. A parsimonious set of controls is used in panel data for 147 countries over 14 years, with a now standard structural equation model approach to control for endogeneity.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.