Alternatives to EisnerAmper LLP for 401(k) Audits

Peer audit practices selected by overlapping state footprint and similar engagement volume, from plan year 2024 Form 5500 filings. A neutral comparison: no firm pays to appear, and listing is not a recommendation.

Last updated September 6, 2026 · Source data: plan year 2024 Form 5500 filings

Which firms are comparable to EisnerAmper LLP for 401(k) plan audits?

EisnerAmper LLP audited 580 retirement plans in plan year 2024 across 31 states and territories (#16 nationally). Closest comparable practices by footprint and volume: PKF O'Connor Davies, LLP and CohnReznick LLP; the table below lists 10 firms with linked profiles.

EisnerAmper LLP at a glance

EisnerAmper LLP: plan year 2024 Form 5500 audit engagements (for comparison)
Measure	Value
Retirement plan audits (401(k), 403(b), pension)	580
All audited filings (incl. welfare plans)	591
States and territories with clients	31
National rank by retirement plan volume	#16 of 3,956
Average client size (participants)	1,439
Largest client (participants)	64,443
Largest state concentrations	NY 135 · LA 114 · NJ 90

Full profile, including opinion mix and largest audited plans: EisnerAmper LLP.

Audit firms comparable to EisnerAmper LLP

Peer practices by footprint overlap and engagement volume relative to EisnerAmper LLP, plan year 2024
#	Firm	Retirement plans audited	States served	States shared with EisnerAmper LLP	Footprint overlap	Avg. client size
1	PKF O'Connor Davies, LLP	577	27	20	52%	1,070
2	CohnReznick LLP	703	35	26	52%	1,862
3	Ernst & Young LLP	519	42	29	47%	21,834
4	PricewaterhouseCoopers LLP	351	29	24	61%	13,426
5	Citrin Cooperman & Company, LLP	472	20	18	49%	905
6	WithumSmith+Brown, PC	870	39	26	55%	5,491
7	Grant Thornton LLP	781	40	29	48%	5,006
8	Deloitte & Touche LLP	455	41	27	44%	14,274
9	BDG-CPAS	132	27	24	63%	1,045
10	Novak Francella, LLC	206	17	15	54%	5,741

Ordered by similarity to EisnerAmper LLP, not by size. Footprint overlap is the share of the two firms’ state distributions that coincide (100% = identical state mix). Candidates: firms with between 116 and 2,900 retirement plan audits (within 5× of EisnerAmper LLP’s volume). Average client size is the mean beginning-of-year participant count of the firm’s audited retirement plans.

Rankings derived from U.S. Department of Labor Form 5500 filings, plan year 2024. Read the full methodology.

Where the footprints overlap

EisnerAmper LLP’s largest states and the comparable firms most active there, plan year 2024
State	EisnerAmper LLP plans	Comparable firms active in the state (plans audited)
New York	135	PKF O'Connor Davies, LLP (328), WithumSmith+Brown, PC (127), Citrin Cooperman & Company, LLP (125)
Louisiana	114	Deloitte & Touche LLP (12), Ernst & Young LLP (3), BDG-CPAS (1)
New Jersey	90	WithumSmith+Brown, PC (170), CohnReznick LLP (110), PKF O'Connor Davies, LLP (67)
North Carolina	48	Grant Thornton LLP (15), Deloitte & Touche LLP (8), BDG-CPAS (6)
Pennsylvania	47	WithumSmith+Brown, PC (66), Grant Thornton LLP (50), Novak Francella, LLC (36)

State reflects the plan sponsor’s address on Form 5500. Each state link opens the full ranked directory for that state.

How these alternatives were selected

Every firm in the dataset with at least 25 retirement plan audits in plan year 2024 was scored against EisnerAmper LLP on two measures: footprint overlap — how closely its distribution of clients across states matches EisnerAmper LLP’s — and volume similarity — how close its engagement count is on a logarithmic scale. Candidates are first limited to a volume band around EisnerAmper LLP’s count (widened only when fewer than 8 firms qualify), then ranked by a weighted score (60% footprint, 40% volume). Ties resolve by volume, then name. The result is deterministic and rebuilds identically from the same filings.

What the score does not measure: audit quality, fees, staffing, industry focus, or fit for your plan. Volume and footprint indicate which firms do this work at comparable scale in the same places; they are a shortlist, not a verdict. Use each profile’s opinion mix and client-size figures, then the questions in how to switch 401(k) auditors to compare on what matters — EBPAQC membership, peer review results, team continuity, and a like-for-like fee.

Comparable-firm tables for other leading practices

Alternatives pages exist for the 25 largest employee benefit plan audit practices by retirement plan volume in plan year 2024.

About this page

Generated from public U.S. Department of Labor Form 5500 filings in which each firm is named as the plan’s independent qualified public accountant. None of the firms shown supplied, reviewed, or endorsed this comparison, and inclusion is neither a recommendation nor a criticism of any firm, including EisnerAmper LLP. Filing data can contain sponsor-entered errors; corrections are welcome via the about page.