401(k) Audit Firms in South Dakota
Last updated · Source data: plan year 2024 Form 5500 filings
Who audits the most 401(k) plans in South Dakota?
Eide Bailly LLP audited 86 South Dakota plans in plan year 2024, the most of any firm. Overall, 47 firms audited 221 plans sponsored in South Dakota; the median audited plan had 324 participants.
Top audit firms for South Dakota plans
| # | Firm | SD plans audited |
|---|---|---|
| 1 | Eide Bailly LLP | 86 |
| 2 | Ketel Thorstenson, LLP | 30 |
| 3 | Elo Prof LLC | 22 |
| 4 | RSM US LLP | 9 |
| 5 | CliftonLarsonAllen LLP | 7 |
| 6 | Forvis Mazars, LLP | 6 |
| 7 | Gardiner + Company | 5 |
| 8 | Brady, Martz & Associates, P.C. | 5 |
| 9 | Henjes, Conner & Williams PC | 5 |
| 10 | Deloitte & Touche LLP | 3 |
| 11 | Doeren Mayhew Assurance | 3 |
| 12 | Eide Bailly LLP | 3 |
| 13 | Plante & Moran, PLLC | 2 |
| 14 | Nichols Rise & Co LLP | 2 |
| 15 | PricewaterhouseCoopers LLP | 1 |
| 16 | Tanner LLC | 1 |
| 17 | McGinnis and Company, PC | 1 |
| 18 | Gabriel Burger Else CPA PC | 1 |
| 19 | Crowe LLP | 1 |
| 20 | Wipfli LLP | 1 |
| 21 | Hawkins Ash CPAS, LLP | 1 |
| 22 | Kinner & Company LTD | 1 |
| 23 | Boulay PLLP | 1 |
| 24 | Abdo LLP | 1 |
| 25 | Ellingson & Ellingson, LTD. | 1 |
Rankings derived from U.S. Department of Labor Form 5500 filings, plan year 2024. Read the full methodology.
South Dakota plan audit market at a glance
| Measure | Value |
|---|---|
| Audited plans sponsored in South Dakota | 221 |
| Audit firms with at least one SD engagement | 47 |
| Median audited plan size (participants) | 324 |
| Share of all U.S. audited plans | 0.3% |
Choosing an audit firm in South Dakota
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 South Dakota 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 South Dakota address is not required — plan audits are performed remotely under the same national standards — but local presence can simplify scheduling and walkthroughs.