#1Byrne Software
Serves this area from Chesterfield, MO (12 mi)
401(k) TPAs & Recordkeepers in O'Fallon, MO
The top-ranked 401(k) TPAs and recordkeepers serving O'Fallon, MO are Byrne Software, Pension And Retirement Services, Ll and Pension Administrators & Consultant. We list 17 401(k) TPAs and recordkeepers serving O'Fallon, MO. 17 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) TPAs & Recordkeepers serving O'Fallon, MO (St. Charles County). 17 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked 401(k) TPAs and recordkeepers for O'Fallon
#2Pension And Retirement Services, Ll
Serves this area from Chesterfield, MO (13 mi)#3Pension Administrators & Consultant
Serves this area from Town and Country, MO (15 mi)#4Dairy Employees Local 600
Serves this area from Maryland Heights, MO (15 mi)#5Marsh Mclennon
Serves this area from Town and Country, MO (15 mi)#6Advanced Benefits Consulting
Serves this area from Creve Coeur, MO (17 mi)#7Benefit Plans Plus, LLC
Serves this area from Maryland Heights, MO (17 mi)#8Benefit Plans Plus, LLC
Serves this area from Maryland Heights, MO (17 mi)#9Ufcw Local 655
Serves this area from MO#10Witte Brothers Exchange, Inc.
Serves this area from MO
7 more providers serving this area
- Buckingham Asset Management LLC, Clayton, MO (22 mi)
- Express Scripts, Bellerive Acres, MO (23 mi)
- Evernorth Care Solutions, Inc., Normandy, MO (23 mi)
- Delta Dental Of Missouri, Sunset Hills, MO (24 mi)
- Preferred Resource Network, Sunset Hills, MO (25 mi)
- Advanced Benefits Consulting, Concord, MO (27 mi)
- Plumbers 553 Health & Welfare Fund, East Alton, IL (35 mi)
Request quotes
Frequently asked questions
How many 401(k) TPAs and recordkeepers serve O'Fallon?
We list 17 401(k) TPAs and recordkeepers serving O'Fallon, MO: 0 based there and 17 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which 401(k) TPAs and recordkeepers serve O'Fallon?
The top-ranked 401(k) TPAs and recordkeepers serving O'Fallon, MO are Byrne Software, Pension And Retirement Services, Ll, Pension Administrators & Consultant, Dairy Employees Local 600 and Marsh Mclennon. The full ranked list, with the official records each provider matched, is on this page.
Which 401(k) TPAs and recordkeepers serving O'Fallon are verified against official records?
10 of the top 10 match an active official record: Byrne Software (U.S. Department of Labor), Pension And Retirement Services, Ll (U.S. Department of Labor), Pension Administrators & Consultant (U.S. Department of Labor), Dairy Employees Local 600 (U.S. Department of Labor) and Marsh Mclennon (U.S. Department of Labor), and 5 more on this page. 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.
What does a 401(k) TPA do?
A third-party administrator handles plan compliance: nondiscrimination testing, Form 5500 preparation, contribution limits and plan documents. Recordkeepers track participant accounts; some firms do both.
"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 .