Top 100 Contractors in NAICS 5412: Accounting, Tax Preparation, Bookkeeping, and Payroll Services, FY2024

Name: Top 100 Contractors in NAICS 5412: Accounting, Tax Preparation, Bookkeeping, and Payroll Services, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 74% of FY2024 NAICS 5412 contract dollars

Contract obligations: $2,247,982,869 Net of deobligations, by contracts coded NAICS 5412 or a code under it
Contractors: 282 Parent companies with an obligation
Largest contractor: Ernst & Young LLP $515 million, 21.7% 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	Ernst & Young LLP 4 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy) CNCS (Corporation for National and Community Service)	$515,374,228	21.7%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Kpmg LLP 3 awardees Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$382,514,037	16.1%	Rank history: #1 in FY2021, #2 in FY2022, #3 in FY2023 and #2 in FY2025; up 1 since FY2023.
3	Deloitte 5 awardees, including Deloitte & Touche LLP and Deloitte Consulting LLP Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DISA (Defense Information Systems Agency)	$370,820,590	15.6%	Rank history: #3 in FY2021, #3 in FY2022, #2 in FY2023 and #3 in FY2025; down 1 since FY2023.
4	E.f. Kearney, Limited Through Kearney & Company, P.C. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$173,538,056	7.3%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2025; new.
5	Guidehouse Inc. 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$106,512,838	4.5%	Rank history: #10 in FY2021, #10 in FY2022, #5 in FY2023 and #5 in FY2025; unchanged since FY2023.
6	Kearney & Company, P.C. Top agencies DHRA (Defense Human Resources Activity) Army (Department of the Army) DISA (Defense Information Systems Agency)	$54,385,279	2.3%	Rank history: #4 in FY2021, #4 in FY2022, #4 in FY2023 and not on the FY2025 list; down 2 since FY2023.
7	The CBE Group, Inc. 2 awardees Top agencies Treasury (Department of the Treasury)	$45,429,180	1.9%	Rank history: #8 in FY2021, #6 in FY2022, #6 in FY2023 and #7 in FY2025; down 1 since FY2023.
8	Research Triangle Institute Top agencies ED (Department of Education) HHS (Department of Health and Human Services) DOL (Department of Labor)	$42,856,162	1.8%	Rank history: #38 in FY2021, #8 in FY2022, #7 in FY2023 and #8 in FY2025; down 1 since FY2023.
9	Integrated Finance and Accounting Solutions, Llc. Top agencies DOS (Department of State) DOT (Department of Transportation) USAF (Department of the Air Force)	$38,029,471	1.6%	Rank history: not on the FY2021 list, #29 in FY2022, #8 in FY2023 and #6 in FY2025; down 1 since FY2023.
10	Vintun LLC 2 awardees Top agencies Army (Department of the Army)	$19,395,060	0.8%	Rank history: #43 in FY2021, not on the FY2022 list, #48 in FY2023 and #25 in FY2025; up 38 since FY2023.
11	Williams, Adley & Company DC LLP Top agencies HUD (Department of Housing and Urban Development) SBA (Small Business Administration) USAID (US Agency for International Development)	$18,743,483	0.8%	Rank history: #15 in FY2021, #23 in FY2022, #17 in FY2023 and #12 in FY2025; up 6 since FY2023.
12	Conrad LLP Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$18,731,880	0.8%	Rank history: #18 in FY2021, #15 in FY2022, #11 in FY2023 and #11 in FY2025; down 1 since FY2023.
13	American Institutes for Research In the Behavioral Sciences Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) DOT (Department of Transportation)	$17,933,967	0.8%	Rank history: not on the FY2021 list, #76 in FY2022, #50 in FY2023 and #17 in FY2025; up 37 since FY2023.
14	Hamilton Enterprises, LLC Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury) DOJ (Department of Justice)	$17,573,523	0.7%	Rank history: #11 in FY2021, #13 in FY2022, #12 in FY2023 and #9 in FY2025; down 2 since FY2023.
15	Sikich CPA LLC Top agencies USAF (Department of the Air Force) DSCA (Defense Security Cooperation Agency) HUD (Department of Housing and Urban Development)	$17,245,446	0.7%	Rank history: #19 in FY2021, #19 in FY2022, #20 in FY2023 and #10 in FY2025; up 5 since FY2023.
16	Castro & Company, LLC Top agencies DCMA (Defense Contract Management Agency) Treasury (Department of the Treasury) DHS (Department of Homeland Security)	$16,529,553	0.7%	Rank history: #26 in FY2021, #25 in FY2022, #16 in FY2023 and #15 in FY2025; unchanged since FY2023.
17	Westat, Inc. Top agencies DOT (Department of Transportation) ED (Department of Education) HHS (Department of Health and Human Services)	$16,390,098	0.7%	Rank history: #20 in FY2021, #27 in FY2022, #35 in FY2023 and #31 in FY2025; up 18 since FY2023.
18	Sehlke Consulting LLC Top agencies Navy (Department of the Navy) USDA (Department of Agriculture) USSOCOM (United States Special Operations Command)	$15,417,588	0.6%	Rank history: #17 in FY2021, #12 in FY2022, #14 in FY2023 and not on the FY2025 list; down 4 since FY2023.
19	FM Talent Source, LLC 2 awardees Top agencies HHS (Department of Health and Human Services) ED (Department of Education) EOP (Executive Office of the President)	$14,990,814	0.6%	Rank history: #40 in FY2021, #48 in FY2022, #21 in FY2023 and #16 in FY2025; up 2 since FY2023.
20	Lynch Consultants, LLC Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) DOL (Department of Labor)	$14,354,801	0.6%	Rank history: #14 in FY2021, #16 in FY2022, #18 in FY2023 and #26 in FY2025; down 2 since FY2023.
21	Cohnreznick LLP Top agencies DOE (Department of Energy) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$13,104,182	0.6%	Rank history: #33 in FY2021, #18 in FY2022, #15 in FY2023 and #36 in FY2025; down 6 since FY2023.
22	Five Stones Intelligence Inc. Top agencies Treasury (Department of the Treasury) DOS (Department of State)	$12,703,057	0.5%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2025; new.
23	Cliftonlarsonallen LLP 2 awardees, including Sikich CPA LLC Top agencies HUD (Department of Housing and Urban Development) VA (Department of Veterans Affairs) NRC (Nuclear Regulatory Commission)	$12,512,153	0.5%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and not on the FY2025 list; unchanged since FY2023.
24	David-James LLC Top agencies HHS (Department of Health and Human Services)	$11,133,542	0.5%	Rank history: #24 in FY2021, #24 in FY2022, #25 in FY2023 and #47 in FY2025; up 1 since FY2023.
25	Great Hill Solutions, LLC Top agencies DHA (Defense Health Agency)	$10,689,607	0.4%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2023 and #20 in FY2025; up 1 since FY2023.
26	State Street Corporation Top agencies PBGC (Pension Benefit Guaranty Corporation)	$10,129,129	0.4%	Rank history: #22 in FY2021, #17 in FY2022, #27 in FY2023 and #22 in FY2025; up 1 since FY2023.
27	AOC Solutions, Inc. Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) FTC (Federal Trade Commission)	$9,971,365	0.4%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023 and #19 in FY2025; up 15 since FY2023.
28	HP Enterprise Services LLC Through Cotiviti GOV Services, LLC Top agencies HHS (Department of Health and Human Services)	$9,325,941	0.4%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and not on the FY2025 list; unchanged since FY2023.
29	Mathematica Inc. Top agencies SSA (Social Security Administration) HHS (Department of Health and Human Services)	$8,782,539	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
30	Tribility LLC Top agencies VA (Department of Veterans Affairs)	$8,496,725	0.4%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; up 231 since FY2023.
31	Cotiviti GOV Services, LLC Top agencies HHS (Department of Health and Human Services)	$7,722,585	0.3%	Rank history: not on the FY2021 list, #79 in FY2022, not on the FY2023 list and #69 in FY2025; returned.
32	Semanticbits LLC Through ICF Incorporated, L.L.C. Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services) CNCS (Corporation for National and Community Service)	$7,030,074	0.3%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
33	Receivia Inc Top agencies VA (Department of Veterans Affairs)	$7,028,247	0.3%	Rank history: not on the FY2021 list, #28 in FY2022, #37 in FY2023 and #30 in FY2025; up 4 since FY2023.
34	Saint George Consulting Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$6,996,402	0.3%	Rank history: #32 in FY2021, #44 in FY2022, #33 in FY2023 and #29 in FY2025; down 1 since FY2023.
35	FI Consulting, Inc. Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$6,806,668	0.3%	Rank history: #54 in FY2021, #71 in FY2022, #38 in FY2023 and #59 in FY2025; up 3 since FY2023.
36	Horus Technology Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$6,747,923	0.3%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; new.
37	Federal Miracle TECH LLC Top agencies DHS (Department of Homeland Security)	$6,675,153	0.3%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
38	Gentech Associates Inc. Top agencies VA (Department of Veterans Affairs) WHS (DOD Washington Headquarters Service) DHRA (Defense Human Resources Activity)	$6,550,075	0.3%	Rank history: not on the FY2021 list, #32 in FY2022, #39 in FY2023 and #33 in FY2025; up 1 since FY2023.
39	Federal Management Systems, Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) Treasury (Department of the Treasury)	$6,233,089	0.3%	Rank history: #23 in FY2021, #33 in FY2022, #45 in FY2023 and #38 in FY2025; up 6 since FY2023.
40	Verato, Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency) DOJ (Department of Justice) Treasury (Department of the Treasury)	$5,950,744	0.3%	Rank history: #9 in FY2021, #14 in FY2022, #13 in FY2023 and #48 in FY2025; down 27 since FY2023.
41	Premier Group Services Inc. Top agencies USAID (US Agency for International Development) NSF (National Science Foundation) EPA (Environmental Protection Agency)	$4,874,617	0.2%	Rank history: #72 in FY2021, #55 in FY2022, #74 in FY2023 and not on the FY2025 list; up 33 since FY2023.
42	Psi Pax, Inc. Top agencies Navy (Department of the Navy)	$4,755,555	0.2%	Rank history: #36 in FY2021, #35 in FY2022, #44 in FY2023 and not on the FY2025 list; up 2 since FY2023.
43	Chickasaw Strategic Pointe, LLC Top agencies USDA (Department of Agriculture)	$4,197,230	0.2%	Rank history: not on the FY2021 list, #42 in FY2022, #52 in FY2023 and #40 in FY2025; up 9 since FY2023.
44	Reed & Associates, Cpas, Inc. Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$4,173,404	0.2%	Rank history: #37 in FY2021, #34 in FY2022, #47 in FY2023 and #37 in FY2025; up 3 since FY2023.
45	Davis Farr LLP Top agencies HHS (Department of Health and Human Services) DCAA (Defense Contract Audit Agency) USDA (Department of Agriculture)	$4,025,460	0.2%	Rank history: #51 in FY2021, #39 in FY2022, #43 in FY2023 and #54 in FY2025; down 2 since FY2023.
46	Avantus Federal LLC Top agencies OSD (Office of the Secretary of Defense)	$3,965,750	0.2%	Rank history: #5 in FY2021, #5 in FY2022, #9 in FY2023 and #21 in FY2025; down 37 since FY2023.
47	Allmond & Co, LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) HUD (Department of Housing and Urban Development)	$3,854,018	0.2%	Rank history: #67 in FY2021, #58 in FY2022, #69 in FY2023 and #76 in FY2025; up 22 since FY2023.
48	Miracle Systems LLC Top agencies DHS (Department of Homeland Security)	$3,826,174	0.2%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and not on the FY2025 list; down 16 since FY2023.
49	Commercial Traffic Co Top agencies GSA (General Services Administration)	$3,692,200	0.2%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and not on the FY2025 list; down 27 since FY2023.
50	BAE Systems PLC Through BAE Systems Technology Solutions & Services Inc. Top agencies PBGC (Pension Benefit Guaranty Corporation)	$3,246,955	0.1%	Rank history: #53 in FY2021, #51 in FY2022, #60 in FY2023 and not on the FY2025 list; up 10 since FY2023.
51	Total Solutions Inc Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$3,215,717	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
52	Integrated Management Strategies LLC Top agencies DHA (Defense Health Agency)	$3,166,474	0.1%	Rank history: not on the FY2021 list, #57 in FY2022, #36 in FY2023 and #35 in FY2025; down 16 since FY2023.
53	Tichenor & Associates, LLP Top agencies USAID (US Agency for International Development) DCAA (Defense Contract Audit Agency) USDA (Department of Agriculture)	$3,120,947	0.1%	Rank history: #57 in FY2021, not on the FY2022 list, #85 in FY2023 and #71 in FY2025; up 32 since FY2023.
54	Harper Rains Knight & Co Pa Top agencies SSA (Social Security Administration) DOL (Department of Labor) EEOC (Equal Employment Opportunity Commission)	$2,936,154	0.1%	Rank history: #64 in FY2021, #61 in FY2022, #61 in FY2023 and #51 in FY2025; up 7 since FY2023.
55	Douglas, Sheets, and Stremcha, Cpas, LLC Top agencies HHS (Department of Health and Human Services)	$2,931,816	0.1%	Rank history: #79 in FY2021, #77 in FY2022, not on the FY2023 list and #68 in FY2025; up 46 since FY2023.
56	FMR Consulting Inc Top agencies ED (Department of Education)	$2,889,442	0.1%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023 and not on the FY2025 list; up 9 since FY2023.
57	Chugach Dynamic Solutions LLC Top agencies USAID (US Agency for International Development)	$2,877,778	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and #34 in FY2025; down 1 since FY2023.
58	Redwood Strategy Group Inc. Top agencies DHRA (Defense Human Resources Activity) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$2,783,061	0.1%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; up 61 since FY2023.
59	Blake Willson Group LLC Top agencies NSF (National Science Foundation) HHS (Department of Health and Human Services)	$2,756,315	0.1%	Rank history: not on the FY2021 list, #84 in FY2022, #87 in FY2023 and #52 in FY2025; up 28 since FY2023.
60	ITC Federal, LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$2,755,708	0.1%	Rank history: #66 in FY2021, #45 in FY2022, #53 in FY2023 and #53 in FY2025; down 7 since FY2023.
61	Myers and Stauffer LC Top agencies HHS (Department of Health and Human Services)	$2,643,947	0.1%	Rank history: #7 in FY2021, #20 in FY2022, #19 in FY2023 and #13 in FY2025; down 42 since FY2023.
62	Kingstonville-Mercadien JV LLC Top agencies SBA (Small Business Administration)	$2,578,329	0.1%	Rank history: #50 in FY2021, #50 in FY2022, #54 in FY2023 and #86 in FY2025; down 8 since FY2023.
63	Fedsync BEI LLC Top agencies HHS (Department of Health and Human Services)	$2,532,574	0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; up 45 since FY2023.
64	Deloitte Consulting LLP Top agencies DISA (Defense Information Systems Agency)	$2,462,914	0.1%	Rank history: not on the FY2021 list, #7 in FY2022, #10 in FY2023 and not on the FY2025 list; down 54 since FY2023.
65	Palisade-Heritage JV LLC Top agencies VA (Department of Veterans Affairs)	$2,423,283	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2025 list; up 33 since FY2023.
66	Keystone Advisors LLC Top agencies DOJ (Department of Justice) GSA (General Services Administration)	$2,335,239	0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and #93 in FY2025; down 2 since FY2023.
67	Michael Shannon Consulting LLC Top agencies Navy (Department of the Navy)	$2,252,280	0.1%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2025; new.
68	Savalan LLC Top agencies SBA (Small Business Administration) CPSC (Consumer Product Safety Commission) EPA (Environmental Protection Agency)	$2,128,404	0.1%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; new.
69	Calco Enterprises, LLC Top agencies DOL (Department of Labor)	$2,099,262	0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and not on the FY2025 list; up 4 since FY2023.
70	Innovative Computing & Applied Technology LLC Top agencies DOT (Department of Transportation)	$2,052,226	0.1%	Rank history: #65 in FY2021, #73 in FY2022, #77 in FY2023 and not on the FY2025 list; up 7 since FY2023.
71	Lewis & Ellis Inc. Top agencies HHS (Department of Health and Human Services)	$2,009,816	0.1%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023 and not on the FY2025 list; down 22 since FY2023.
72	Elitebco LLC Top agencies USAID (US Agency for International Development) HUD (Department of Housing and Urban Development)	$1,980,229	0.1%	Rank history: #83 in FY2021, #64 in FY2022, not on the FY2023 list and #84 in FY2025; returned.
73	Computer Evidence Specialists, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$1,976,728	0.1%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2025; up 64 since FY2023.
74	Crisis1, LLC Top agencies DHS (Department of Homeland Security)	$1,959,550	0.1%	Rank history: #86 in FY2021, #85 in FY2022, #76 in FY2023 and #64 in FY2025; up 2 since FY2023.
75	Booth Management Consulting, LLC Top agencies DOE (Department of Energy) SSA (Social Security Administration) NASA (National Aeronautics and Space Administration)	$1,951,528	0.1%	Rank history: #30 in FY2021, #37 in FY2022, #34 in FY2023 and not on the FY2025 list; down 41 since FY2023.
76	Futrend Technology Inc. Top agencies HHS (Department of Health and Human Services)	$1,950,568	0.1%	Rank history: #59 in FY2021, #62 in FY2022, #55 in FY2023 and #62 in FY2025; down 21 since FY2023.
77	The Joachim Group, Cpa's & Consultants, LLC Top agencies DHRA (Defense Human Resources Activity) HUD (Department of Housing and Urban Development) VA (Department of Veterans Affairs)	$1,923,405	0.1%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2025; up 51 since FY2023.
78	Tuba Group, Inc. Top agencies Army (Department of the Army) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$1,775,741	0.1%	Rank history: #63 in FY2021, #72 in FY2022, not on the FY2023 list and #46 in FY2025; up 24 since FY2023.
79	ST. Michael's Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,710,488	0.1%	Rank history: #99 in FY2021, not on the FY2022 list, #40 in FY2023 and #39 in FY2025; down 39 since FY2023.
80	Accenture Federal Services LLC Top agencies Army (Department of the Army)	$1,591,897	0.1%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2025; new.
81	TFC Consulting Inc. Top agencies DHS (Department of Homeland Security) Commerce (Department of Commerce)	$1,580,601	0.1%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; up 24 since FY2023.
82	Teya Enterprises LLC Through Teya Support Services LLC Top agencies DOJ (Department of Justice)	$1,544,939	0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and not on the FY2025 list; down 14 since FY2023.
83	RP Solutions LLC Top agencies DOT (Department of Transportation)	$1,541,052	0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; new.
84	WWC Global LLC Top agencies Navy (Department of the Navy)	$1,496,752	0.1%	Rank history: not on the FY2021 list, #56 in FY2022, #67 in FY2023 and not on the FY2025 list; down 17 since FY2023.
85	Alexton Incorporated Top agencies DOE (Department of Energy)	$1,489,576	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Bland & Associates PC Top agencies HHS (Department of Health and Human Services) ED (Department of Education)	$1,476,279	0.1%	Rank history: #31 in FY2021, #41 in FY2022, #59 in FY2023 and #49 in FY2025; down 27 since FY2023.
87	Francis Awoyera & Associates, P.C Top agencies HUD (Department of Housing and Urban Development)	$1,424,514	0.1%	Rank history: #70 in FY2021, #75 in FY2022, #79 in FY2023 and not on the FY2025 list; down 8 since FY2023.
88	Chenega Services & Federal Solutions, LLC Top agencies DHS (Department of Homeland Security)	$1,365,828	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
89	Act1 Federal LLC Top agencies DHS (Department of Homeland Security)	$1,310,412	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Csci-Gentech II LLC Top agencies DMEA (Defense Microelectronics Activity)	$1,206,285	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023 and #77 in FY2025; up 1 since FY2023.
91	Immersion Consulting LLC Top agencies DHS (Department of Homeland Security)	$1,175,689	<0.1%	Rank history: #94 in FY2021, not on the FY2022 list, #66 in FY2023 and #72 in FY2025; down 25 since FY2023.
92	Ollie Green & Co, Cpa's, LLC Top agencies VA (Department of Veterans Affairs)	$1,117,072	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 18 since FY2023.
93	Pangea Consulting, LLC Top agencies Commerce (Department of Commerce)	$1,083,398	<0.1%	Rank history: not on the FY2021 list, #96 in FY2022, #95 in FY2023 and not on the FY2025 list; up 2 since FY2023.
94	Ascella Technologies Inc. Top agencies SEC (Securities and Exchange Commission)	$1,069,313	<0.1%	Rank history: not on the FY2021 list, #74 in FY2022, #80 in FY2023 and #92 in FY2025; down 14 since FY2023.
95	Ibswa Government Solutions, LLC Top agencies HUD (Department of Housing and Urban Development)	$999,081	<0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and not on the FY2025 list; up 1 since FY2023.
96	Dt-Trak Consulting, Inc. Top agencies HHS (Department of Health and Human Services)	$987,837	<0.1%	Rank history: #98 in FY2021, #88 in FY2022, not on the FY2023 list and not on the FY2025 list; up 25 since FY2023.
97	RMA Associates LLC Top agencies DODIG (Department of Defense Inspector General) CFTC (Commodity Futures Trading Commission) PCLOB (Privacy and Civil Liberties Oversight Board)	$957,927	<0.1%	Rank history: #92 in FY2021, #66 in FY2022, #75 in FY2023 and not on the FY2025 list; down 22 since FY2023.
98	Mcbride, Lock & Associates, LLC Top agencies NSF (National Science Foundation) DOJ (Department of Justice) EAC (US Election Assistance Commission)	$910,953	<0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #87 in FY2025; down 4 since FY2023.
99	Axiom Corporation Top agencies VA (Department of Veterans Affairs)	$858,569	<0.1%	Rank history: not on the FY2021–FY2023 lists and #98 in FY2025; new.
100	County of Monroe Top agencies EOP (Executive Office of the President)	$846,060	<0.1%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2025; new.

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100 of 282 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 5412

Code	Net obligations	Largest contractor
54121 Accounting, Tax Preparation, Bookkeeping, and Payroll Services	$2,247,982,869	Ernst & Young LLP

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 $2.38 billion 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 5412 contractors in FY2024?

1. Ernst & Young LLP ($515M), 2. Kpmg LLP ($383M), 3. Deloitte ($371M), 4. E.f. Kearney, Limited ($174M), 5. Guidehouse Inc. ($107M), 6. Kearney & Company, P.C. ($54.4M), 7. The CBE Group, Inc. ($45.4M), 8. Research Triangle Institute ($42.9M), 9. Integrated Finance and Accounting Solutions, Llc. ($38M), 10. Vintun LLC ($19.4M).

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