Are there audit fee premiums for client portfolio management?

Auditing is a credence good so its quality cannot be determined directly. The gain or loss of large clients is one publicly available signal that can used by other clients to ascertain the quality provided by audit firms. This paper examines whether this quality signal results in firms earning fee premiums and discounts. Empirical examination of a sample of 16,233 firm‐years of listed Australian companies for the period 2011–2021 shows that there is an association between offices and industry groups that gain and lose large clients, in both the current and previous periods, and economically significant fee premiums for both Big‐4 and non‐Big‐4 firms. These results suggest that clients can use auditor portfolio changes as quality signals and that they appear to reward firms that gain large clients and prune their portfolios of poor clients, particularly if these changes are in the same industry as the client.