Tacey is on the editorial boards of several international journals and in 2001 he was invited to lecture at the C. G. Jung Institute in Zürich. He gave regular summer courses in Zürich until 2010. In 2002 he became a founding member of the International Association for Jungian Studies. In 2006 he was William J. Shannon Visiting Professor in Religious Studies at Nazareth College, Rochester, New York, United States; and Lloyd Geering Visiting Professor in Religious Studies at Victoria University of Wellington, New Zealand. He has been invited to speak at conferences in the United Kingdom, the United States, Canada, South Africa, Denmark, New Zealand and Korea.