Research shows that audit fees have increased after the SOX ban on providing non-audit services (NAS) to audit clients, but the reasons behind it have been unclear. Using an auction-modeling approach, this study aims to bridge this gap by providing a theoretical explanation for this empirical...

The literature shows that audit fees have increased after the SOX ban to audit clients on non-audit services (NAS) but the reason behind it has been unclear until now. Using an auction modeling approach, this study aims to bridge this gap by providing a theoretical explanation for this enigma....

The paper analyzes the seller's expected revenue in auctions with a large number of asymmetric players. We explicitly calculate the revenue in large asymmetric first-price, second-price, and optimal auctions to O(1/n^3) accuracy, where n is the number of players. These calculations show that the...