Abacus
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 Abacus audit?
Abacus was the independent auditor for 2 retirement plan filings in plan year 2024, with clients in 1 state — the #1,935 practice nationally by volume.
Practice at a glance
| Measure | Value |
|---|---|
| Firm EIN (as filed) | 27-2328447 |
| Retirement plan audits (401(k), 403(b), pension) | 2 |
| All audited filings (incl. welfare plans) | 2 |
| States and territories with clients | 1 |
| National rank by retirement plan volume | #1,935 of 3,956 |
| National rank, all audited filings (league-table basis) | #2,101 of 4,052 |
| Average client size (participants) | 401 |
| Largest client (participants) | 539 |
Rankings derived from U.S. Department of Labor Form 5500 filings, plan year 2024. Read the full methodology.
Where does Abacus audit plans?
| State | Plans audited | Share of practice |
|---|---|---|
| Missouri | 2 | 100.0% |
Largest concentration: Missouri (2 plans). State reflects the plan sponsor’s address, not the firm’s office locations.
What audit opinions does Abacus issue?
| Opinion type | Filings | Share |
|---|---|---|
| Unmodified (clean) | 2 | 100.0% |
| Qualified | 0 | 0.0% |
| Disclaimer | 0 | 0.0% |
| 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 Abacus
| Plan sponsor | State | Participants |
|---|---|---|
| Digital Monitoring Products, Inc. | MO | 539 |
| Red Monkey Foods, Inc. | MO | 263 |
About this profile
This page is generated from public U.S. Department of Labor Form 5500 filings in which Abacus (EIN 27-2328447) is named as the plan’s independent qualified public accountant. Abacus 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.