Using quarterly data over the period 1999 to 2013, we estimate the elasticity of corporate income tax (CIT) revenue to output gap in Greece. The elasticity is estimated to be about 1.40 to 1.55 when we use the profit share in its construction, while it increases to 1.83 to 2.05 when profit is used in its construction. The high values of the new estimated elasticity imply substantial CIT buoyancy effects in the years to come, provided that the current reform program of the Greek economy remains on track.