Top 100 Contractors in PSC R431: Support – Professional: Human Resources, FY2021

Name: Top 100 Contractors in PSC R431: Support – Professional: Human Resources, FY2021
Creator: GovTribe

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

The top 10 won 55% of FY2021 PSC R431 contract dollars

Contract obligations: $474,254,044 Net of deobligations, by contracts coded PSC R431
Contractors: 326 Parent companies with an obligation
Largest contractor: Accenture Federal Services LLC $75.8 million, 14.1% 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	Accenture Federal Services LLC 2 awardees Top agencies DHS (Department of Homeland Security) Commerce (Department of Commerce)	$75,808,521	14.1%	Rank history: #5 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
2	Deloitte LLP Through Deloitte Consulting LLP Top agencies DHS (Department of Homeland Security) OPM (Office of Personnel Management) HUD (Department of Housing and Urban Development)	$60,954,354	11.3%	Rank history: #7 in FY2022, #4 in FY2023, #1 in FY2024 and #1 in FY2025; up 6 since FY2020.
3	Science Applications International Corporation Top agencies OPM (Office of Personnel Management)	$27,738,882	5.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
4	Calibre Systems Inc. Top agencies VA (Department of Veterans Affairs)	$26,750,097	5.0%	Rank history: #6 in FY2022, #7 in FY2023, #4 in FY2024 and #5 in FY2025; up 9 since FY2020.
5	Govstrive LLC Top agencies USDA (Department of Agriculture) Commerce (Department of Commerce)	$24,881,995	4.6%	Rank history: #3 in FY2022, #3 in FY2023, #14 in FY2024 and #37 in FY2025; down 1 since FY2020.
6	Eagle Health, LLC Top agencies USAID (US Agency for International Development) DOJ (Department of Justice)	$17,627,185	3.3%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
7	Your Recruiting Company, Inc. Top agencies Commerce (Department of Commerce) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$17,016,687	3.2%	Rank history: #9 in FY2022, #2 in FY2023, #2 in FY2024 and #12 in FY2025; down 4 since FY2020.
8	International Business Machines Corporation 2 awardees Top agencies Commerce (Department of Commerce) GSA (General Services Administration)	$16,717,579	3.1%	Rank history: #15 in FY2022, #13 in FY2023, #7 in FY2024 and #3 in FY2025; down 2 since FY2020.
9	Golden Key Group, LLC Top agencies Commerce (Department of Commerce) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$16,312,145	3.0%	Rank history: #4 in FY2022, #8 in FY2023, #3 in FY2024 and #2 in FY2025; up 16 since FY2020.
10	R3 Government Solutions, LLC Top agencies DHS (Department of Homeland Security) DCSA (Defense Counterintelligence and Security Agency) DOT (Department of Transportation)	$10,459,969	1.9%	Rank history: #10 in FY2022, #9 in FY2023, #9 in FY2024 and #9 in FY2025; up 20 since FY2020.
11	Federal Management Partners, LLC Top agencies NSF (National Science Foundation) OPM (Office of Personnel Management) CFPB (Consumer Financial Protection Bureau)	$9,373,419	1.7%	Rank history: #11 in FY2022, #10 in FY2023, #12 in FY2024 and #27 in FY2025; up 17 since FY2020.
12	National Academy of Sciences Top agencies USAF (Department of the Air Force)	$8,785,117	1.6%	Rank history: #32 in FY2022, #22 in FY2023, #11 in FY2024 and #18 in FY2025; down 3 since FY2020.
13	Rividium Inc. Top agencies USDA (Department of Agriculture) EPA (Environmental Protection Agency) DOE (Department of Energy)	$8,730,796	1.6%	Rank history: #19 in FY2022, #11 in FY2023, #6 in FY2024 and #13 in FY2025; down 3 since FY2020.
14	Avantgarde LLC Top agencies DOE (Department of Energy) NSF (National Science Foundation) Navy (Department of the Navy)	$7,817,573	1.5%	Rank history: #20 in FY2022, #24 in FY2023, #25 in FY2024 and #14 in FY2025; unchanged since FY2020.
15	Grant Thornton International Ltd Through Grant Thornton Public Sector LLC Top agencies DOL (Department of Labor) DOI (Department of the Interior)	$7,104,213	1.3%	Rank history: #8 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; up 109 since FY2020.
16	EAP Consultants, LLC Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) USDA (Department of Agriculture)	$6,637,907	1.2%	Rank history: #13 in FY2022, #12 in FY2023, #8 in FY2024 and #11 in FY2025; up 16 since FY2020.
17	Lsinc Corporation Top agencies MDA (DOD Missile Defense Agency)	$6,033,970	1.1%	Rank history: #26 in FY2022, #17 in FY2023, #31 in FY2024 and not on the FY2025 list; unchanged since FY2020.
18	Cape Fox Facilities Services, LLC Top agencies USAID (US Agency for International Development)	$5,509,541	1.0%	Rank history: #25 in FY2022, #26 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
19	360 Patriot Enterprises LLC Top agencies Army (Department of the Army)	$5,165,022	1.0%	Rank history: #17 in FY2022, #16 in FY2023, #16 in FY2024 and not on the FY2025 list; up 7 since FY2020.
20	Magellan Health, Inc. Through Magellan Healthcare Inc. Top agencies Navy (Department of the Navy)	$4,705,917	0.9%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
21	Aeio LLC Top agencies HHS (Department of Health and Human Services)	$4,632,498	0.9%	Rank history: #39 in FY2022, #23 in FY2023, #27 in FY2024 and #77 in FY2025; down 6 since FY2020.
22	SRA International Inc. Through General Dynamics Information Technology, Inc. Top agencies DHS (Department of Homeland Security)	$4,527,573	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
23	Astrix Technology LLC Top agencies HHS (Department of Health and Human Services)	$4,447,887	0.8%	Rank history: #29 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
24	FYI - for Your Information, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) DOL (Department of Labor)	$3,687,370	0.7%	Rank history: #22 in FY2022, #14 in FY2023, #10 in FY2024 and #58 in FY2025; down 6 since FY2020.
25	Fors Marsh Group LLC Top agencies DHS (Department of Homeland Security)	$3,443,659	0.6%	Rank history: #72 in FY2022, #44 in FY2023, #100 in FY2024 and not on the FY2025 list; up 11 since FY2020.
26	Gartner, Inc. 2 awardees, including Personnel Decisions Research Institutes, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) National Gallery of Art	$3,372,339	0.6%	Rank history: #28 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
27	Lindholm & Associates, Inc. Top agencies DOJ (Department of Justice) DOT (Department of Transportation) Treasury (Department of the Treasury)	$3,058,708	0.6%	Rank history: #69 in FY2022, #38 in FY2023, #45 in FY2024 and #66 in FY2025; up 2 since FY2020.
28	Accel Corporation Top agencies Commerce (Department of Commerce)	$2,687,573	0.5%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
29	Cherokee Nation 2 awardees, including Cherokee Nation Strategic Programs, L.L.C. and Cherokee Federal Solutions, L.L.C. Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$2,312,400	0.4%	Rank history: #56 in FY2022 and not on the FY2023–FY2025 lists; up 13 since FY2020.
30	Business Management Associates Inc. Top agencies NRC (Nuclear Regulatory Commission) DOT (Department of Transportation) GSA (General Services Administration)	$2,206,896	0.4%	Rank history: #36 in FY2022, #39 in FY2023, #51 in FY2024 and #71 in FY2025; up 21 since FY2020.
31	Nana Regional Corporation Inc Through Tuvli LLC Top agencies DOS (Department of State)	$2,198,606	0.4%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
32	The Washington Center for Internships and Academic Seminars Top agencies DOT (Department of Transportation) GSA (General Services Administration)	$2,177,678	0.4%	Rank history: not on the FY2022–FY2025 lists; up 26 since FY2020.
33	Insight Public Sector Inc. Through Insight Technology Solutions, LLC Top agencies DHS (Department of Homeland Security)	$2,155,218	0.4%	Rank history: not on the FY2022 list, #62 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
34	Gemini TECH Services LLC Top agencies Army (Department of the Army)	$2,139,737	0.4%	Rank history: #34 in FY2022, #60 in FY2023, #36 in FY2024 and #23 in FY2025; up 3 since FY2020.
35	Trident Technical Solutions, LLC Top agencies Commerce (Department of Commerce)	$2,115,803	0.4%	Rank history: #23 in FY2022, #49 in FY2023, #56 in FY2024 and #42 in FY2025; down 11 since FY2020.
36	Korn / Ferry International Through Sensa Solutions, Inc. Top agencies HHS (Department of Health and Human Services) DFC (International Development Finance Corporation) USAF (Department of the Air Force)	$2,108,709	0.4%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
37	Ctrmg-Gapsi JV II, LLC Top agencies HHS (Department of Health and Human Services)	$2,059,868	0.4%	Rank history: #54 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2020.
38	Riva Solutions Inc. Top agencies Commerce (Department of Commerce)	$2,030,394	0.4%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
39	Bnl, Inc. Top agencies ED (Department of Education) Treasury (Department of the Treasury) USDA (Department of Agriculture)	$2,029,545	0.4%	Rank history: #35 in FY2022, not on the FY2023 list, #66 in FY2024 and #40 in FY2025; up 97 since FY2020.
40	CTR Management Group LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$2,011,261	0.4%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
41	Systems Plus, Inc. Top agencies DOL (Department of Labor)	$1,930,985	0.4%	Rank history: #52 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
42	Professional Management Enterprises, Inc. Top agencies Commerce (Department of Commerce)	$1,928,115	0.4%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
43	The Ar Group, LLC Top agencies USDA (Department of Agriculture) DCMA (Defense Contract Management Agency) Commerce (Department of Commerce)	$1,908,539	0.4%	Rank history: #51 in FY2022, #48 in FY2023, #50 in FY2024 and not on the FY2025 list; up 71 since FY2020.
44	AON Consulting Inc. 2 awardees Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) CFPB (Consumer Financial Protection Bureau)	$1,760,184	0.3%	Rank history: #60 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; up 63 since FY2020.
45	The Building People LLC Top agencies Commerce (Department of Commerce)	$1,699,485	0.3%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
46	Government Retirement & Benefits, Inc. Top agencies DOJ (Department of Justice) Commerce (Department of Commerce) SSA (Social Security Administration)	$1,613,835	0.3%	Rank history: #43 in FY2022, #40 in FY2023, #32 in FY2024 and #22 in FY2025; down 6 since FY2020.
47	Parker Tide LLC Top agencies Treasury (Department of the Treasury) DOT (Department of Transportation)	$1,580,832	0.3%	Rank history: #16 in FY2022, #5 in FY2023, #22 in FY2024 and not on the FY2025 list; up 49 since FY2020.
48	Tristar, Inc. Top agencies Navy (Department of the Navy)	$1,528,218	0.3%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; down 9 since FY2020.
49	AE Strategies LLC Top agencies Navy (Department of the Navy)	$1,510,425	0.3%	Rank history: #38 in FY2022, #27 in FY2023, #23 in FY2024 and not on the FY2025 list; down 11 since FY2020.
50	Arcticom, LLC Top agencies DOS (Department of State)	$1,480,230	0.3%	Rank history: #47 in FY2022, #61 in FY2023, #89 in FY2024 and #74 in FY2025; new, not ranked in FY2020.
51	Economic Systems Inc. Top agencies GSA (General Services Administration) PBGC (Pension Benefit Guaranty Corporation) Navy (Department of the Navy)	$1,383,454	0.3%	Rank history: #73 in FY2022, #90 in FY2023, #83 in FY2024 and #76 in FY2025; up 40 since FY2020.
52	Thundercat Technology, LLC Top agencies Commerce (Department of Commerce)	$1,367,946	0.3%	Rank history: #53 in FY2022, #74 in FY2023, #87 in FY2024 and #49 in FY2025; new, not ranked in FY2020.
53	Sabre88, LLC Top agencies Navy (Department of the Navy)	$1,362,455	0.3%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
54	Credence Management Solutions Limited Liability Company Top agencies DHRA (Defense Human Resources Activity)	$1,311,041	0.2%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
55	Longevity Consulting LLC Top agencies USDA (Department of Agriculture)	$1,300,693	0.2%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; down 39 since FY2020.
56	Tenacious Solutions LLC Top agencies Commerce (Department of Commerce)	$1,293,938	0.2%	Rank history: #62 in FY2022 and not on the FY2023–FY2025 lists; up 32 since FY2020.
57	Koniag, Inc. Through Pacarctic, LLC Top agencies DOS (Department of State)	$1,290,407	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Zemitek LLC Top agencies USAID (US Agency for International Development)	$1,277,584	0.2%	Rank history: not on the FY2022–FY2024 lists and #88 in FY2025; up 77 since FY2020.
59	Kizano Corp. Top agencies DOJ (Department of Justice)	$1,276,042	0.2%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
60	Chickasaw Health Consulting, LLC Top agencies HHS (Department of Health and Human Services) ED (Department of Education)	$1,240,921	0.2%	Rank history: not on the FY2022–FY2025 lists; up 134 since FY2020.
61	Rumik Consultancy LLC Top agencies USDA (Department of Agriculture)	$1,229,695	0.2%	Rank history: #61 in FY2022, #46 in FY2023, #41 in FY2024 and #68 in FY2025; new, not ranked in FY2020.
62	Knowledgebank, Inc. Top agencies USDA (Department of Agriculture) GSA (General Services Administration) DHS (Department of Homeland Security)	$1,150,307	0.2%	Rank history: #24 in FY2022, #35 in FY2023, #62 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
63	Applied Development, LLC Top agencies DHRA (Defense Human Resources Activity)	$1,144,797	0.2%	Rank history: #58 in FY2022, #55 in FY2023, #64 in FY2024 and #56 in FY2025; up 1 since FY2020.
64	Keystone Ocean Services, Inc. Top agencies Commerce (Department of Commerce)	$1,136,839	0.2%	Rank history: #42 in FY2022, #25 in FY2023, #39 in FY2024 and #21 in FY2025; new, not ranked in FY2020.
65	A P Ventures, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$1,122,636	0.2%	Rank history: #30 in FY2022, #28 in FY2023, #40 in FY2024 and #15 in FY2025; up 51 since FY2020.
66	Terasense, Inc. Top agencies Army (Department of the Army)	$1,093,919	0.2%	Rank history: not on the FY2022–FY2024 lists and #96 in FY2025; up 6 since FY2020.
67	Sierra Tahoe Investigations Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$1,009,899	0.2%	Rank history: not on the FY2022 list, #95 in FY2023, #68 in FY2024 and #35 in FY2025; down 1 since FY2020.
68	TAI Pedro & Associates, P.C. Top agencies HHS (Department of Health and Human Services)	$999,219	0.2%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
69	The Siegel Group, LLC Top agencies Army (Department of the Army)	$994,074	0.2%	Rank history: #67 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
70	Tinker Salome Chris Enterprise, LLC Top agencies DOT (Department of Transportation)	$949,093	0.2%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
71	Chartis Consulting Corporation Top agencies DHS (Department of Homeland Security)	$921,603	0.2%	Rank history: #64 in FY2022, #70 in FY2023, #82 in FY2024 and #79 in FY2025; new, not ranked in FY2020.
72	Martin Miser Cody & Associates LLC Top agencies VA (Department of Veterans Affairs)	$918,800	0.2%	Rank history: #90 in FY2022, #96 in FY2023, #76 in FY2024 and #53 in FY2025; up 2 since FY2020.
73	Netimpact Strategies Inc. Top agencies USDA (Department of Agriculture)	$873,129	0.2%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
74	Janus Associates, Inc. Top agencies DOJ (Department of Justice) Army (Department of the Army)	$852,895	0.2%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 226 since FY2020.
75	Gant Global Services (Ggs), Inc. Top agencies VA (Department of Veterans Affairs)	$851,736	0.2%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
76	The Ross Agency, Inc. Top agencies VA (Department of Veterans Affairs)	$851,566	0.2%	Rank history: not on the FY2022 list, #98 in FY2023, #80 in FY2024 and #47 in FY2025; down 1 since FY2020.
77	David Jones CPA PC Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$843,491	0.2%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
78	I Tech AG LLC Top agencies Commerce (Department of Commerce)	$837,714	0.2%	Rank history: not on the FY2022–FY2023 lists, #58 in FY2024 and #16 in FY2025; down 30 since FY2020.
79	Rouse Consulting, LLC Top agencies Navy (Department of the Navy)	$837,184	0.2%	Rank history: #79 in FY2022, #87 in FY2023, not on the FY2024 list and #65 in FY2025; up 3 since FY2020.
80	Computer Evidence Specialists, LLC Top agencies VA (Department of Veterans Affairs)	$825,889	0.2%	Rank history: #96 in FY2022, not on the FY2023 list, #75 in FY2024 and #60 in FY2025; up 1 since FY2020.
81	Pivotal Practices Consulting LLC Top agencies Navy (Department of the Navy)	$821,192	0.2%	Rank history: #82 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
82	The Ravens Group, Inc. Top agencies VA (Department of Veterans Affairs)	$809,220	0.2%	Rank history: not on the FY2022–FY2023 lists, #85 in FY2024 and #41 in FY2025; up 2 since FY2020.
83	Tekpro Support Services, LLC Top agencies DOJ (Department of Justice)	$797,771	0.1%	Rank history: not on the FY2022 list, #53 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
84	Eagle Hill Consulting, LLC Top agencies DHS (Department of Homeland Security)	$781,411	0.1%	Rank history: #76 in FY2022, #33 in FY2023, #20 in FY2024 and #52 in FY2025; new, not ranked in FY2020.
85	Strategic Resolution Experts Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$776,200	0.1%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
86	Circuit Media LLC Top agencies Army (Department of the Army)	$746,576	0.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
87	Savantage Financial Services, Inc. Top agencies USDA (Department of Agriculture)	$739,392	0.1%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
88	Acquisition Professionals LLC Top agencies Army (Department of the Army)	$721,056	0.1%	Rank history: not on the FY2022 list, #93 in FY2023, #86 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
89	Bi Fact LLC Top agencies Commerce (Department of Commerce)	$706,699	0.1%	Rank history: not on the FY2022–FY2025 lists; down 35 since FY2020.
90	It Concepts, Inc. Top agencies Commerce (Department of Commerce)	$689,049	0.1%	Rank history: #37 in FY2022, #29 in FY2023, #18 in FY2024 and #72 in FY2025; down 29 since FY2020.
91	Chainbridge Solutions Incorporated Top agencies PBGC (Pension Benefit Guaranty Corporation)	$685,403	0.1%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
92	Avantus Federal LLC Top agencies DOT (Department of Transportation)	$647,075	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Laredo Technical Services, Inc. Top agencies VA (Department of Veterans Affairs)	$615,541	0.1%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
94	Cameo Consulting Group LLC Top agencies PBGC (Pension Benefit Guaranty Corporation)	$607,679	0.1%	Rank history: #21 in FY2022, #15 in FY2023, #28 in FY2024 and #46 in FY2025; new, not ranked in FY2020.
95	Escience & Technology Solutions, Inc. Top agencies DOS (Department of State)	$585,423	0.1%	Rank history: #99 in FY2022, #100 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
96	Arservices, Limited Top agencies Navy (Department of the Navy)	$579,153	0.1%	Rank history: #98 in FY2022, not on the FY2023–FY2024 lists and #80 in FY2025; down 10 since FY2020.
97	Syber Enterprise Group Inc. Top agencies DOT (Department of Transportation)	$576,980	0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
98	Personality Matters, Inc. Top agencies DOT (Department of Transportation) DOJ (Department of Justice)	$569,742	0.1%	Rank history: not on the FY2022–FY2025 lists; up 33 since FY2020.
99	Joint Technology Solution, Inc. Top agencies Army (Department of the Army)	$549,564	0.1%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
100	Vsolvit LLC Top agencies USDA (Department of Agriculture)	$545,000	0.1%	Rank history: not on the FY2022–FY2025 lists; down 20 since FY2020.

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100 of 326 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 $537 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 PSC R431 contractors in FY2021?

1. Accenture Federal Services LLC ($75.8M), 2. Deloitte LLP ($61M), 3. Science Applications International Corporation ($27.7M), 4. Calibre Systems Inc. ($26.8M), 5. Govstrive LLC ($24.9M), 6. Eagle Health, LLC ($17.6M), 7. Your Recruiting Company, Inc. ($17M), 8. International Business Machines Corporation ($16.7M), 9. Golden Key Group, LLC ($16.3M), 10. R3 Government Solutions, LLC ($10.5M).

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