#1Ketel Thorstenson, LLP
Based in Rapid City, SD
401(k) & Benefit Plan Audit Firms in Pennington County, SD
The top-ranked benefit plan audit firms serving Pennington County, SD are Ketel Thorstenson, LLP, Eide Bailly LLP and Armanino LLP. We list 4 benefit plan audit firms serving Pennington County, SD. 4 of the providers shown match an active record from U.S. Department of Labor, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
401(k) & Benefit Plan Audit Firms serving Pennington County, SD. 4 providers, 4 of the top 4 verified against federal or state records. Registry records checked on 2026-11-04.
Top 4 ranked benefit plan audit firms for Pennington County
| # | Provider | Verified records | Based in | Phone |
|---|---|---|---|---|
| 1 | Ketel Thorstenson, LLP | Named auditor on 38 Form 5500 benefit plan filings (plan year 2024) | Rapid City, SD | (605) 342-5630 |
| 2 | Eide Bailly LLP | Named auditor on 1,192 Form 5500 benefit plan filings (plan year 2024) | Minneapolis, MN (477 mi) | (612) 253-6500 |
| 3 | Armanino LLP | Named auditor on 483 Form 5500 benefit plan filings (plan year 2024) | San Ramon, CA (1087 mi) | (844) 582-8883 |
| 4 | Tanner LLC | Named auditor on 132 Form 5500 benefit plan filings (plan year 2024) | Salt Lake City, UT (514 mi) | (801) 532-7444 |
#2Eide Bailly LLP
Serves this area from Minneapolis, MN (477 mi)#3Armanino LLP
Serves this area from San Ramon, CA (1087 mi)#4Tanner LLC
Serves this area from Salt Lake City, UT (514 mi)
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Frequently asked questions
How many benefit plan audit firms serve Pennington County?
We list 4 benefit plan audit firms serving Pennington County, SD: 1 based there and 3 serving it from nearby. 4 of the top 4 match an active federal or state record, checked on 2026-11-04.
Which benefit plan audit firms serve Pennington County?
The top-ranked benefit plan audit firms serving Pennington County, SD are Ketel Thorstenson, LLP, Eide Bailly LLP, Armanino LLP and Tanner LLC. The full ranked list, with the official records each provider matched, is on this page.
Which benefit plan audit firms serving Pennington County are verified against official records?
4 of the top 4 match an active official record: Ketel Thorstenson, LLP (U.S. Department of Labor), Eide Bailly LLP (U.S. Department of Labor), Armanino LLP (U.S. Department of Labor) and Tanner LLC (U.S. Department of Labor). Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
When does a 401(k) plan need an audit?
Generally when a plan has 100 or more participants with account balances at the start of the plan year; Form 5500 must then include an independent qualified public accountant's report. Confirm with your plan advisor.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .
Cities in Pennington County
Communities served
Box Elder, Rapid Valley, Colonial Pine Hills, Green Valley, Hill City, Ashland Heights, Wall, Johnson Siding, New Underwood, Keystone, Wasta, Quinn, Caputa