Deloitte and EY share the honors in Wisconsin splitting the S&P 500 companies 6 and 3 respectively. Deloitte’s Madison office bought in $60 million audit fees in FY20 from the top 500 companies in US.
| Auditor | # of companies audited | Total fees ($ million) | % |
|---|---|---|---|
| Deloitte | 6 | 59.71 | 87% |
| EY | 3 | 8.66 | 13% |
The biggest among the clients for Deloitte is Ingersoll Rand. However, some of the fees from Ingersoll Rand pertain to assistance with the recent merger. Harley-Davidson is EY’s largest audit client in the Wisconsin office.
| Company | Headquarters Location | Auditor | Total ($ million) |
|---|---|---|---|
| Ingersoll Rand | Milwaukee, Wisconsin | Deloitte | 21.69 |
| Fiserv Inc | Brookfield, Wisconsin | Deloitte | 15.99 |
| Snap-on | Kenosha, Wisconsin | Deloitte | 7.41 |
| Rockwell Automation Inc. | Milwaukee, Wisconsin | Deloitte | 5.90 |
| WEC Energy Group | Milwaukee, Wisconsin | Deloitte | 5.66 |
| Harley-Davidson | Milwaukee, Wisconsin | EY | 4.03 |
| Alliant Energy Corp | Madison, Wisconsin | Deloitte | 3.06 |
| Kohl's Corp. | Menomonee Falls, Wisconsin | EY | 2.89 |
| A.O. Smith Corp | Milwaukee, Wisconsin | EY | 1.74 |
Look into our other blog posts for a listing of big 4 accounting firms and their respective S&P 500 audit clients. Subscribe to our posts for up to date information on Big4 firms and if there is some data point that you would like us to analyze, just drop in a comment.