This study divides the audit market into the oligopolistic and atomistic segments at MSA level and examine whether the effect of audit market concentration on audit fees and audit quality is the same in these two segments. I find that the market concentration raises the audit fees in the...

This article discusses the interdiction of combining audit and not audit services by the external auditor, which the EU Commission (EC) is presently discussing as reform measures in its regulation draft of November 30, 2011. According to an agency-theoretical definition of the auditor's function...