Top 100 Contractors in NAICS 541219: Other Accounting Services, FY2021

Name: Top 100 Contractors in NAICS 541219: Other Accounting Services, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 64% of FY2021 NAICS 541219 contract dollars

Contract obligations: $658,078,861 Net of deobligations, by contracts coded NAICS 541219
Contractors: 158 Parent companies with an obligation
Largest contractor: Deloitte LLP $135 million, 18.8% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Deloitte LLP 2 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$135,393,668	18.8%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 3 since FY2020.
2	Kpmg L.L.P. 4 awardees Top agencies Navy (Department of the Navy) CNCS (Corporation for National and Community Service) HHS (Department of Health and Human Services)	$97,822,020	13.6%	Rank history: #2 in FY2022, #2 in FY2023, #3 in FY2024 and #2 in FY2025; down 1 since FY2020.
3	Avantus Federal LLC Top agencies OSD (Office of the Secretary of Defense) GSA (General Services Administration) WHS (DOD Washington Headquarters Service)	$79,184,387	11.0%	Rank history: #3 in FY2022, #7 in FY2023, #27 in FY2024 and #13 in FY2025; down 1 since FY2020.
4	Kearney & Company, P.C. Top agencies USAF (Department of the Air Force) Treasury (Department of the Treasury) USSOCOM (United States Special Operations Command)	$38,874,458	5.4%	Rank history: #4 in FY2022, #4 in FY2023, #38 in FY2024 and not on the FY2025 list; up 1 since FY2020.
5	Haynes, Inc. Top agencies DOS (Department of State)	$32,124,464	4.5%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
6	Verato, Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency) DOJ (Department of Justice) AOUSC (Administrative Office of the U.S. Courts)	$21,790,756	3.0%	Rank history: #10 in FY2022, #9 in FY2023, #25 in FY2024 and #34 in FY2025; up 4 since FY2020.
7	Guidehouse Inc. Top agencies DHS (Department of Homeland Security) OSD (Office of the Secretary of Defense) NSF (National Science Foundation)	$17,299,376	2.4%	Rank history: #8 in FY2022, #3 in FY2023, #2 in FY2024 and #4 in FY2025; up 9 since FY2020.
8	Miracle Systems LLC Top agencies DHS (Department of Homeland Security) GSA (General Services Administration)	$14,292,782	2.0%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
9	Lynch Consultants, LLC Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$13,594,406	1.9%	Rank history: #12 in FY2022, #11 in FY2023, #12 in FY2024 and #16 in FY2025; up 12 since FY2020.
10	Grant Thornton International Ltd 2 awardees, including Grant Thornton Public Sector LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$12,825,496	1.8%	Rank history: #14 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2020.
11	Westat, Inc. Top agencies ED (Department of Education) NSF (National Science Foundation) HHS (Department of Health and Human Services)	$10,446,581	1.4%	Rank history: #16 in FY2022, #22 in FY2023, #8 in FY2024 and #20 in FY2025; up 12 since FY2020.
12	ICF International, Inc. Through ICF Incorporated, L.L.C. Top agencies USAID (US Agency for International Development) EOP (Executive Office of the President) CNCS (Corporation for National and Community Service)	$10,401,863	1.4%	Rank history: #15 in FY2022, #15 in FY2023, #73 in FY2024 and not on the FY2025 list; up 32 since FY2020.
13	Larsonallen LLP Through Cliftonlarsonallen LLP Top agencies HHS (Department of Health and Human Services) HUD (Department of Housing and Urban Development) VA (Department of Veterans Affairs)	$9,818,285	1.4%	Rank history: #9 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
14	Sehlke Consulting LLC Top agencies Navy (Department of the Navy)	$9,037,609	1.3%	Rank history: #11 in FY2022, #12 in FY2023, #10 in FY2024 and not on the FY2025 list; up 1 since FY2020.
15	Hamilton Enterprises, LLC Top agencies DHA (Defense Health Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$8,506,569	1.2%	Rank history: #21 in FY2022, #16 in FY2023, #13 in FY2024 and #7 in FY2025; down 1 since FY2020.
16	Federal Management Systems, Inc. Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services) DISA (Defense Information Systems Agency)	$8,408,746	1.2%	Rank history: #22 in FY2022, #29 in FY2023, #24 in FY2024 and #24 in FY2025; up 16 since FY2020.
17	The Boston Consulting Group Inc Through BCG Federal Corp. Top agencies Navy (Department of the Navy)	$6,994,273	1.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
18	Castro & Company, LLC Top agencies HHS (Department of Health and Human Services) PBGC (Pension Benefit Guaranty Corporation) Treasury (Department of the Treasury)	$6,754,141	0.9%	Rank history: #17 in FY2022, #10 in FY2023, #9 in FY2024 and #10 in FY2025; up 7 since FY2020.
19	Summit Consulting LLC Top agencies HUD (Department of Housing and Urban Development) SBA (Small Business Administration) DOI (Department of the Interior)	$5,366,094	0.7%	Rank history: #24 in FY2022 and not on the FY2023–FY2025 lists; up 88 since FY2020.
20	Psi Pax, Inc. Top agencies Navy (Department of the Navy)	$5,165,808	0.7%	Rank history: #23 in FY2022, #28 in FY2023, #26 in FY2024 and #68 in FY2025; up 15 since FY2020.
21	TFC Consulting Inc. Top agencies DHS (Department of Homeland Security) DHRA (Defense Human Resources Activity) Commerce (Department of Commerce)	$4,973,574	0.7%	Rank history: #31 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
22	Research Triangle Institute Top agencies ED (Department of Education) DOJ (Department of Justice)	$4,897,871	0.7%	Rank history: #6 in FY2022, #5 in FY2023, #5 in FY2024 and #6 in FY2025; down 13 since FY2020.
23	Science Applications International Corporation 2 awardees, including Engility Services, LLC Top agencies USAF (Department of the Air Force)	$4,881,993	0.7%	Rank history: #25 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
24	HMS Holdings Corp. Through Cotiviti GOV Services, LLC Top agencies HHS (Department of Health and Human Services)	$4,725,000	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	Wichita Tribe Industrial Development Commission Through Wichita Tribal Enterprises, LLC Top agencies NASA (National Aeronautics and Space Administration)	$4,671,711	0.6%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; up 16 since FY2020.
26	Vintun LLC Top agencies Army (Department of the Army)	$4,516,033	0.6%	Rank history: #78 in FY2022, #30 in FY2023, #7 in FY2024 and #15 in FY2025; down 2 since FY2020.
27	Total Solutions Inc. Top agencies DHS (Department of Homeland Security)	$3,649,907	0.5%	Rank history: #34 in FY2022, #35 in FY2023 and not on the FY2024–FY2025 lists; up 35 since FY2020.
28	Mantech International Corporation Through Mantech Mgs, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$3,631,654	0.5%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
29	Stout Risius Ross, LLC Top agencies DOJ (Department of Justice)	$3,541,129	0.5%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
30	Definitive Logic Corporation Top agencies Treasury (Department of the Treasury)	$3,531,459	0.5%	Rank history: #72 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
31	Horus Technology Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$3,380,505	0.5%	Rank history: #27 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
32	Asset Management Outsourcing Recoveries Inc. Through Receivia, Inc. Top agencies VA (Department of Veterans Affairs)	$3,089,284	0.4%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
33	BAE Systems PLC Through BAE Systems Technology Solutions & Services Inc. Top agencies PBGC (Pension Benefit Guaranty Corporation)	$2,994,610	0.4%	Rank history: #33 in FY2022, #37 in FY2023, #32 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
34	FI Consulting, Inc. Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$2,973,588	0.4%	Rank history: #44 in FY2022, #25 in FY2023, #21 in FY2024 and #39 in FY2025; up 8 since FY2020.
35	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies Navy (Department of the Navy)	$2,827,457	0.4%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; down 17 since FY2020.
36	Mindseeker, Inc. Top agencies Army (Department of the Army)	$2,818,471	0.4%	Rank history: #29 in FY2022, #49 in FY2023, not on the FY2024 list and #73 in FY2025; down 2 since FY2020.
37	FM Talent Source, LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) ED (Department of Education)	$2,795,945	0.4%	Rank history: #32 in FY2022, #13 in FY2023, #11 in FY2024 and #9 in FY2025; up 26 since FY2020.
38	Futrend Technology Inc. Top agencies HHS (Department of Health and Human Services)	$2,682,359	0.4%	Rank history: #39 in FY2022, #33 in FY2023, #53 in FY2024 and #42 in FY2025; up 5 since FY2020.
39	FMR Consulting Inc. Top agencies ED (Department of Education)	$2,623,198	0.4%	Rank history: #37 in FY2022, not on the FY2023–FY2024 lists and #37 in FY2025; up 7 since FY2020.
40	Axiom Corporation Top agencies VA (Department of Veterans Affairs)	$2,436,891	0.3%	Rank history: #54 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
41	Innovative Computing & Applied Technology LLC Top agencies DOT (Department of Transportation)	$2,160,159	0.3%	Rank history: #46 in FY2022, #47 in FY2023, #49 in FY2024 and not on the FY2025 list; up 13 since FY2020.
42	ITC Federal, LLC Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury)	$2,143,391	0.3%	Rank history: #28 in FY2022, #32 in FY2023, #40 in FY2024 and #35 in FY2025; up 14 since FY2020.
43	Index Systems Inc. Top agencies DHRA (Defense Human Resources Activity)	$2,088,792	0.3%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
44	Rigil Corporation Top agencies DOT (Department of Transportation)	$2,082,891	0.3%	Rank history: #42 in FY2022, #48 in FY2023, #69 in FY2024 and not on the FY2025 list; down 5 since FY2020.
45	Allmond & Co, LLC Top agencies HHS (Department of Health and Human Services) HUD (Department of Housing and Urban Development) EPA (Environmental Protection Agency)	$2,039,561	0.3%	Rank history: #41 in FY2022, #84 in FY2023, #89 in FY2024 and not on the FY2025 list; up 2 since FY2020.
46	Serco North America (Holdings) Inc Through Serco Inc. Top agencies USAF (Department of the Air Force)	$1,757,807	0.2%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
47	Northrop Grumman Corporation Through Northrop Grumman Systems Corporation Top agencies Army (Department of the Army)	$1,640,141	0.2%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; up 24 since FY2020.
48	Ascella Technologies, Inc. Top agencies SEC (Securities and Exchange Commission)	$1,621,021	0.2%	Rank history: #45 in FY2022, #50 in FY2023, #63 in FY2024 and #61 in FY2025; up 7 since FY2020.
49	Babb Maldonado & Associates, LLC Top agencies SBA (Small Business Administration)	$1,614,296	0.2%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
50	Douglas, Sheets, and Stremcha, Cpas, LLC Top agencies HHS (Department of Health and Human Services)	$1,589,946	0.2%	Rank history: #47 in FY2022, #62 in FY2023, #35 in FY2024 and #46 in FY2025; up 7 since FY2020.
51	Chevo LLC Top agencies Treasury (Department of the Treasury)	$1,529,374	0.2%	Rank history: #50 in FY2022, #53 in FY2023, not on the FY2024 list and #95 in FY2025; up 27 since FY2020.
52	Tesla Laboratories Inc. Top agencies DHS (Department of Homeland Security)	$1,459,680	0.2%	Rank history: #90 in FY2022, #83 in FY2023, #86 in FY2024 and #78 in FY2025; up 13 since FY2020.
53	Crisis1, LLC Top agencies DHS (Department of Homeland Security)	$1,253,697	0.2%	Rank history: #52 in FY2022, #46 in FY2023, #52 in FY2024 and #43 in FY2025; up 28 since FY2020.
54	EGS Inc. Top agencies DOI (Department of the Interior)	$1,194,759	0.2%	Rank history: #69 in FY2022, #63 in FY2023, #85 in FY2024 and not on the FY2025 list; up 38 since FY2020.
55	Creative Solutions Consulting Inc. Top agencies DMEA (Defense Microelectronics Activity)	$1,168,847	0.2%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 21 since FY2020.
56	Case Healthcare Solutions, Inc. Top agencies DHA (Defense Health Agency)	$1,164,365	0.2%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
57	CRW and Associates, LLC Top agencies Army (Department of the Army)	$1,157,965	0.2%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
58	Raft LLC Top agencies HHS (Department of Health and Human Services)	$1,093,482	0.2%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
59	Immersion Consulting LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$1,084,249	0.2%	Rank history: #74 in FY2022, #41 in FY2023, #59 in FY2024 and #49 in FY2025; up 14 since FY2020.
60	DRT Strategies, Inc. Top agencies DOJ (Department of Justice)	$1,073,269	0.1%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
61	Deva & Associates PC Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$1,065,718	0.1%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
62	Pohaku Pacific LLC Top agencies USAF (Department of the Air Force)	$983,962	0.1%	Rank history: #63 in FY2022, #76 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2020.
63	Ruchman and Associates, Inc. Top agencies DHS (Department of Homeland Security)	$877,526	0.1%	Rank history: #58 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
64	T and T Consulting Services Inc. Top agencies Navy (Department of the Navy)	$834,754	0.1%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
65	ST. Michael's Inc. Top agencies DHS (Department of Homeland Security)	$822,717	0.1%	Rank history: not on the FY2022 list, #27 in FY2023, #54 in FY2024 and #25 in FY2025; up 20 since FY2020.
66	Provider Resources, LLC Top agencies HHS (Department of Health and Human Services)	$800,000	0.1%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
67	Tuba Group, Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$717,074	0.1%	Rank history: #56 in FY2022, #54 in FY2023, #48 in FY2024 and #33 in FY2025; down 9 since FY2020.
68	Managed Resources Inc. Top agencies VA (Department of Veterans Affairs)	$667,778	0.1%	Rank history: not on the FY2022–FY2025 lists; up 67 since FY2020.
69	Empirical Corporation Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security)	$642,968	0.1%	Rank history: #73 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
70	Dynamo Technologies, LLC Top agencies DOJ (Department of Justice)	$614,836	0.1%	Rank history: #94 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
71	Forvis Mazars LLP Top agencies SEC (Securities and Exchange Commission)	$600,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
72	Fair Isaac Corporation Top agencies ED (Department of Education)	$590,549	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Deloitte Consulting LLP Top agencies Navy (Department of the Navy)	$590,000	0.1%	Rank history: #5 in FY2022, #8 in FY2023, #42 in FY2024 and not on the FY2025 list; down 66 since FY2020.
74	Creative Business Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$520,750	0.1%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
75	Lani EKO & Company, Cpas, PLLC Top agencies DOJ (Department of Justice)	$504,182	0.1%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
76	Busby Barnard & Health Information Management Associates LLC Top agencies HHS (Department of Health and Human Services)	$487,770	0.1%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; up 83 since FY2020.
77	Cherokee Nation Healthcare Services, L.L.C. Top agencies Army (Department of the Army)	$422,771	0.1%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
78	Dt-Trak Consulting, Inc. Top agencies HHS (Department of Health and Human Services)	$408,325	0.1%	Rank history: #83 in FY2022, #80 in FY2023, #68 in FY2024 and not on the FY2025 list; up 16 since FY2020.
79	Booz Allen Hamilton Inc. Top agencies Navy (Department of the Navy)	$380,000	0.1%	Rank history: not on the FY2022–FY2025 lists; down 46 since FY2020.
80	Accumyn LLC Top agencies Treasury (Department of the Treasury)	$338,483	<0.1%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
81	MBO Partners Inc. Top agencies MCC (Millennium Challenge Corporation)	$306,914	<0.1%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; down 53 since FY2020.
82	Dynamic Planning & Response LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$299,970	<0.1%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
83	Ct70005, L.L.C. Top agencies USDA (Department of Agriculture)	$297,600	<0.1%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
84	JT Goldstein LLC Top agencies DOT (Department of Transportation)	$290,018	<0.1%	Rank history: #92 in FY2022, #87 in FY2023, #87 in FY2024 and not on the FY2025 list; up 12 since FY2020.
85	RM Advisory Services, LLC Top agencies DHS (Department of Homeland Security)	$289,328	<0.1%	Rank history: #85 in FY2022, #68 in FY2023, #79 in FY2024 and #66 in FY2025; up 10 since FY2020.
86	WWC Global LLC Top agencies USSOCOM (United States Special Operations Command)	$286,575	<0.1%	Rank history: #35 in FY2022, #42 in FY2023, #58 in FY2024 and #76 in FY2025; up 11 since FY2020.
87	CJN Consulting, Inc. Top agencies DOI (Department of the Interior)	$285,375	<0.1%	Rank history: #87 in FY2022, #85 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2020.
88	Sikich CPA LLC Top agencies Army (Department of the Army)	$278,300	<0.1%	Rank history: not on the FY2022–FY2023 lists, #31 in FY2024 and #11 in FY2025; up 31 since FY2020.
89	RMA Associates LLC Top agencies HHS (Department of Health and Human Services)	$249,938	<0.1%	Rank history: #81 in FY2022, not on the FY2023 list, #72 in FY2024 and #59 in FY2025; down 62 since FY2020.
90	Rainmakers-Linkvisum LLC Top agencies DOT (Department of Transportation)	$241,130	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Veris Consulting, LLC Top agencies SEC (Securities and Exchange Commission)	$240,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Madison Consulting Group, Inc. Top agencies Treasury (Department of the Treasury)	$234,940	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	The Workshop Incorporated Top agencies HUD (Department of Housing and Urban Development)	$204,470	<0.1%	Rank history: #84 in FY2022, #78 in FY2023, #75 in FY2024 and not on the FY2025 list; down 5 since FY2020.
94	Forensic Resolutions Inc. Top agencies SEC (Securities and Exchange Commission)	$196,952	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
95	Computer Evidence Specialists, LLC Top agencies DOJ (Department of Justice) National Gallery of Art	$192,179	<0.1%	Rank history: #89 in FY2022, #82 in FY2023, #51 in FY2024 and #54 in FY2025; up 10 since FY2020.
96	Credence Dynamo Solutions LLC Top agencies HHS (Department of Health and Human Services)	$188,778	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Heartland Energy Partners LLC Top agencies USDA (Department of Agriculture)	$186,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
98	The Joachim Group, Cpa's & Consultants, LLC Top agencies HUD (Department of Housing and Urban Development)	$181,414	<0.1%	Rank history: #100 in FY2022, #94 in FY2023, #50 in FY2024 and #44 in FY2025; new, not ranked in FY2020.
99	Renaissance Associates Ltd Top agencies DOJ (Department of Justice)	$180,147	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 20 since FY2020.
100	Rogers Sharon Elizabeth Top agencies MCC (Millennium Challenge Corporation)	$176,618	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.

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100 of 158 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $721 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 541219 contractors in FY2021?

1. Deloitte LLP ($135M), 2. Kpmg L.L.P. ($97.8M), 3. Avantus Federal LLC ($79.2M), 4. Kearney & Company, P.C. ($38.9M), 5. Haynes, Inc. ($32.1M), 6. Verato, Inc. ($21.8M), 7. Guidehouse Inc. ($17.3M), 8. Miracle Systems LLC ($14.3M), 9. Lynch Consultants, LLC ($13.6M), 10. Grant Thornton International Ltd ($12.8M).

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