In our study “Costs and benefits of a United Kingdom exit from the European Union” from April 2015, we analyzed the static effects of a Brexit. We were able to show that due to less cross-border trade activities all 28 EU countries would suffer from lower economic growth. Now we calculated the dynamic growth effects of a Brexit. Again, all 28 economies would be faced with lower growth rates. Growth losses would be even larger than in the case of static effects only.