401(k) Audit Firms in Michigan
Last updated · Source data: plan year 2024 Form 5500 filings
Who audits the most 401(k) plans in Michigan?
Plante & Moran, PLLC audited 406 Michigan plans in plan year 2024, the most of any firm. Overall, 283 firms audited 2,487 plans sponsored in Michigan; the median audited plan had 344 participants.
Top audit firms for Michigan plans
| # | Firm | MI plans audited |
|---|---|---|
| 1 | Plante & Moran, PLLC | 406 |
| 2 | Doeren Mayhew Assurance | 156 |
| 3 | Rehmann Robson LLC | 136 |
| 4 | UHY LLP | 102 |
| 5 | Hungerford | 97 |
| 6 | Baker Tilly US, LLP | 93 |
| 7 | Yeo & Yeo, P.C. | 91 |
| 8 | BDO USA, P.C. | 69 |
| 9 | Maner Costerisan | 62 |
| 10 | MRPR Group, PC | 51 |
| 11 | Crowe LLP | 45 |
| 12 | Andrews Hooper Pavlik PLC | 44 |
| 13 | GJC CPA's & Advisors | 36 |
| 14 | Plante & Moran, PLLC | 32 |
| 15 | Benda, Grace, Stulz & Company, P.C. | 31 |
| 16 | CliftonLarsonAllen LLP | 30 |
| 17 | Weinlander Fitzhugh | 25 |
| 18 | Fenner, Melstrom & Dooling, PLC | 24 |
| 19 | Monroe Sweeris & Tromp PLC | 24 |
| 20 | Forvis Mazars, LLP | 24 |
| 21 | Grant Thornton LLP | 23 |
| 22 | Bultynck & Co., P.L.L.C. | 21 |
| 23 | Janz & Knight, PLC | 21 |
| 24 | Wipfli LLP | 19 |
| 25 | Sikich CPA LLC | 19 |
Rankings derived from U.S. Department of Labor Form 5500 filings, plan year 2024. Read the full methodology.
Michigan plan audit market at a glance
| Measure | Value |
|---|---|
| Audited plans sponsored in Michigan | 2,487 |
| Audit firms with at least one MI engagement | 283 |
| Median audited plan size (participants) | 344 |
| Share of all U.S. audited plans | 3.2% |
Choosing an audit firm in Michigan
Engagement volume is the most objective public signal of employee benefit plan audit experience: the Department of Labor’s audit quality study found deficiency rates of 76% among CPAs performing one or two plan audits a year, versus 12% at the largest practices. The table above shows which firms do this work in Michigan at real volume.
Beyond volume, ask candidate firms about AICPA Employee Benefit Plan Audit Quality Center membership, who staffs the fieldwork, experience with your recordkeeper and payroll systems, and whether the fee assumes an ERISA Section 103(a)(3)(C) election. A Michigan address is not required — plan audits are performed remotely under the same national standards — but local presence can simplify scheduling and walkthroughs.