The activities of the Input Catalogue Consortium are monitored by the INCA Steering Committee, comprising representatives of the participating countries, originally composed () as follows:
Belgium J. Dommanget, Bruxelles
France J. Delhaye, Paris
Germany W. Fricke (Chairman), Heidelberg
Netherlands R.S. Le Poole, Leiden
Spain J.J. de Orús, Barcelona
Switzerland F. Rufener, Geneve
United Kingdom C.A. Murray, (formerly) Herstmonceux
From 1988, the Steering Committee was re-organised as follows:
Belgium J. Dommanget (Chairman), Bruxelles
France J. Delhaye, Paris
Germany R. Wielen, Heidelberg
Netherlands R.S. Le Poole, Leiden
Spain J. Torra, Barcelona
Switzerland M. Mayor, Geneve
United Kingdom C.A. Murray, (formerly) Herstmonceux