Purpose – The authors aim to exploit a natural experiment in which voluntary replace mandatory joint audits for Danish listed companies and analyse audit fee implications of using one or two audit firms. Design/methodology/approach – Regression analysis is used. The authors apply both a core...

Purpose – The authors aim to exploit a natural experiment in which voluntary replace mandatory joint audits for Danish listed companies and analyse audit fee implications of using one or two audit firms. Design/methodology/approach – Regression analysis is used. The authors apply both a core...