401(k) Audit Firms by State

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

How do I find a 401(k) audit firm in my state?

Pick your state below for a ranked table of the firms auditing plans sponsored there, built from plan year 2024 Form 5500 filings. California has the most audited plans (8,081 of 77,427 nationally). Audits are routinely performed remotely, so nearby is optional — experience is not.

States and territories by audited employee benefit plan filings, plan year 2024
#	State	Audited plans	Audit firms active	Median plan size (participants)
1	California	8,081	759	331
2	New York	5,755	578	391
3	Texas	4,845	576	383
4	Pennsylvania	3,672	426	377
5	Illinois	3,540	387	397
6	Ohio	3,121	316	350
7	Florida	3,082	505	370
8	Massachusetts	2,560	283	343
9	Michigan	2,487	283	344
10	New Jersey	2,355	397	410
11	Virginia	2,164	323	340
12	Wisconsin	1,901	171	323
13	Georgia	1,880	307	414
14	Minnesota	1,869	186	368
15	North Carolina	1,810	288	360
16	Washington	1,561	193	363
17	Maryland	1,544	256	351
18	Indiana	1,420	194	340
19	Missouri	1,388	200	396
20	Tennessee	1,359	210	421
21	Colorado	1,231	220	328
22	Connecticut	1,133	184	364
23	Arizona	1,058	193	380
24	Oregon	927	156	332
25	Kentucky	830	150	350
26	Iowa	826	133	328
27	Alabama	780	153	330
28	Kansas	739	127	307
29	Utah	718	127	367
30	Louisiana	705	139	312
31	Washington, D.C.	682	149	300
32	South Carolina	678	153	350
33	Oklahoma	646	142	334
34	Nebraska	529	79	358
35	New Hampshire	373	79	330
36	Arkansas	371	96	367
37	Nevada	355	128	395
38	Maine	324	48	303
39	Puerto Rico	314	86	344
40	Idaho	311	72	311
41	Mississippi	307	83	319
42	Hawaii	273	51	341
43	North Dakota	273	37	293
44	Rhode Island	269	71	399
45	West Virginia	267	77	377
46	New Mexico	253	82	297
47	Delaware	231	92	356
48	South Dakota	221	47	324
49	Montana	208	46	312
50	Vermont	206	42	286
51	Alaska	154	43	370
52	Wyoming	70	38	212
53	Guam	25	4	307
54	U.S. Virgin Islands	8	6	236
55	Northern Mariana Islands	1	1	531

State reflects the plan sponsor's address on Form 5500. Median plan size is the median beginning-of-year participant count among audited retirement plans.

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

Does the firm need to be in my state?

No. Employee benefit plan audits are performed under national standards (GAAS and Department of Labor rules), and most established practices audit plans in dozens of states — records are pulled from the recordkeeper and payroll systems, not a filing cabinet. Sponsors often still prefer a firm with a real footprint in their state for time-zone alignment, on-site walkthroughs, and familiarity with regional payroll providers. The state tables show exactly which firms have that footprint, by count of signed audits.

Not sure whether your plan needs an audit at all? Start with the audit requirement explainer, then see typical audit costs.