Wipfli LLP
Employee benefit plan audit practice profile, built from plan year 2024 Form 5500 filings.
Last updated · Source data: plan year 2024 Form 5500 filings
How many 401(k) plans does Wipfli LLP audit?
Wipfli LLP was the independent auditor for 764 retirement plan filings (785 audited filings including welfare plans) in plan year 2024, with clients in 42 states and territories — the #14 practice nationally by volume.
Practice at a glance
| Measure | Value |
|---|---|
| Firm EIN (as filed) | 39-0758449 |
| Retirement plan audits (401(k), 403(b), pension) | 764 |
| All audited filings (incl. welfare plans) | 785 |
| States and territories with clients | 42 |
| National rank by retirement plan volume | #14 of 3,956 |
| National rank, all audited filings (league-table basis) | #14 of 4,052 |
| Average client size (participants) | 1,071 |
| Largest client (participants) | 45,105 |
Rankings derived from U.S. Department of Labor Form 5500 filings, plan year 2024. Read the full methodology.
Where does Wipfli LLP audit plans?
| State | Plans audited | Share of practice |
|---|---|---|
| Wisconsin | 306 | 40.1% |
| Illinois | 73 | 9.6% |
| Minnesota | 63 | 8.2% |
| Colorado | 38 | 5.0% |
| Pennsylvania | 32 | 4.2% |
| Maine | 30 | 3.9% |
| California | 27 | 3.5% |
| Michigan | 19 | 2.5% |
| Montana | 19 | 2.5% |
| Missouri | 18 | 2.4% |
| New Jersey | 15 | 2.0% |
| Texas | 13 | 1.7% |
| New York | 12 | 1.6% |
| Georgia | 10 | 1.3% |
| Idaho | 9 | 1.2% |
| New Hampshire | 8 | 1.0% |
| North Carolina | 7 | 0.9% |
| Iowa | 6 | 0.8% |
| Indiana | 6 | 0.8% |
| Ohio | 6 | 0.8% |
| Washington | 6 | 0.8% |
| Louisiana | 5 | 0.7% |
| Virginia | 4 | 0.5% |
| Florida | 3 | 0.4% |
| Massachusetts | 3 | 0.4% |
| North Dakota | 3 | 0.4% |
| Oklahoma | 3 | 0.4% |
| Connecticut | 2 | 0.3% |
| Nebraska | 2 | 0.3% |
| Nevada | 2 | 0.3% |
| South Carolina | 2 | 0.3% |
| Utah | 2 | 0.3% |
| Arkansas | 1 | 0.1% |
| Washington, D.C. | 1 | 0.1% |
| Delaware | 1 | 0.1% |
| Hawaii | 1 | 0.1% |
| Kansas | 1 | 0.1% |
| Maryland | 1 | 0.1% |
| New Mexico | 1 | 0.1% |
| Puerto Rico | 1 | 0.1% |
| South Dakota | 1 | 0.1% |
| West Virginia | 1 | 0.1% |
Largest concentration: Wisconsin (306 plans). State reflects the plan sponsor’s address, not the firm’s office locations.
What audit opinions does Wipfli LLP issue?
| Opinion type | Filings | Share |
|---|---|---|
| Unmodified (clean) | 753 | 98.6% |
| Qualified | 1 | 0.1% |
| Disclaimer | 10 | 1.3% |
| Adverse | 0 | 0.0% |
As coded on Schedule H. A disclaimer here usually reflects the legacy limited-scope reporting convention (now the ERISA Section 103(a)(3)(C) election), not a failed audit — see the methodology.
Largest plans audited by Wipfli LLP
| Plan sponsor | State | Participants |
|---|---|---|
| Johnson Controls, Inc. | WI | 45,105 |
| Manpowergroup Inc. | WI | 38,266 |
| Providence Administrative Consulting Services Inc | UT | 32,253 |
| American Builders & Contractors Supply Co Inc | WI | 22,014 |
| Rockwell Automation | WI | 15,827 |
Comparing Wipfli LLP with other 401(k) audit firms?
See alternatives to Wipfli LLP for 401(k) audits: firms with comparable engagement volume and an overlapping state footprint, drawn from the same Form 5500 data.
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About this profile
This page is generated from public U.S. Department of Labor Form 5500 filings in which Wipfli LLP (EIN 39-0758449) is named as the plan’s independent qualified public accountant. Wipfli LLP did not supply, review, or endorse this information, and inclusion is not a recommendation. Filing data can contain sponsor-entered errors; corrections are welcome via the about page.