Which product or service code accounts for the most federal spending in FY2021?

Drugs and Biologicals, with $47.9B in FY2021.

How is a PSC different from a NAICS code?

PSC says what the government bought; NAICS says what industry sold it. A single purchase carries both, and they answer different questions.

Where does this ranking come from?

It is computed from USASpending.gov award records, which are U.S. government works and in the public domain. Each figure is the FY2021 dollars coded to that product or service code. TheFiscalFinder does the ranking; the underlying figures are the government's own.

How many codes are shown?

The top 100 for FY2021. Each row opens that code's own page, where the same money is broken out by year, by counterparty and by place.

Does a high position mean anything is wrong?

No. This is a description of where public money went in FY2021, computed from public records. It is not an allegation about anyone on it.

Rankings

Top product and service codes by federal dollars: FY2021

FY2021 · complete year · data as of 2026-07-12

≈ computed · PSC

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Drugs and Biologicals accounted for more federal purchasing than any other product or service code in FY2021: $47.9B. Product and Service Codes describe WHAT was bought — a specific aircraft, a category of research, a kind of professional service — where NAICS describes the industry that supplies it. Computed

Ranked from USASpending records. FY2020 to FY2026 are loaded. Rank vs FY2020 is each name's change in position from FY2020; a dash means the name was not in FY2020's data.

Quick findings

Computed

The top 10 account for 46% of the $453.4B combined total of all 100 codes listed.
National Defense R&D Services; Defense-Related Activities; Applied Research rose the most, from #488 in FY2020 to #79 in FY2021.
IT and Telecom- Telecommunications and Transmission fell the most among those listed, from #30 in FY2020 to #90 in FY2021.

Rank	Name	FY2021	FY2020	Change	Rank vs FY2020
01	Drugs and BiologicalsPSC 6505	$47.9B	$20B	+140%	▲ 4
02	Support- Professional: Engineering/TechnicalPSC R425	$28.2B	$28.1B	0%	same
03	Aircraft, Fixed WingPSC 1510	$24.4B	$49.6B	−51%	▼ 2
04	Support- Professional: OtherPSC R499	$23.6B	$20.9B	+13%	same
05	Medical- Managed HealthcarePSC Q201	$23.1B	$15.3B	+51%	▲ 2
06	Combat Ships and Landing VesselsPSC 1905	$16.6B	$25B	−34%	▼ 3
07	Operation of Miscellaneous BuildingsPSC M1JZ	$13.6B	$12.2B	+11%	▲ 2
08	Support- Professional: Program Management/SupportPSC R408	$11.4B	$11.2B	+1%	▲ 4
09	IT and Telecom- Other IT and TelecommunicationsPSC D399	$10.8B	$15B	−28%	▼ 1
10	Oper of Govt R&D GOCO FacilitiesPSC M181	$9.3B	$9.3B	0%	▲ 3
11	Guided MissilesPSC 1410	$8.8B	$17.9B	−51%	▼ 5
12	Support- Management: Logistics SupportPSC R706	$8.1B	$8.2B	−1%	▲ 3
13	Maint/Repair/Rebuild of Equipment- Aircraft and Airframe Structural ComponentsPSC J015	$6.6B	$6.6B	+1%	▲ 5
14	IT and Telecom - Business Application/Application Development Support Services (Labor)PSC DA01	$6.3B	—	—	—
15	Aircraft, Rotary WingPSC 1520	$6.1B	$5.1B	+19%	▲ 7
16	Medical and Surgical Instruments, Equipment, and SuppliesPSC 6515	$5.7B	$12B	−53%	▼ 6
17	Medical- OtherPSC Q999	$5.5B	$11.3B	−51%	▼ 6
18	Liquid Propellants and Fuels, Petroleum BasePSC 9130	$5.3B	$4.8B	+12%	▲ 5
19	Gas Turbines and Jet Engines, Aircraft, Prime Moving; and ComponentsPSC 2840	$5B	$8.8B	−43%	▼ 5
20	Social- Government Health Insurance ProgramsPSC G007	$4.9B	$1.3B	+271%	▲ 81
21	IT and Telecom- Integrated Hardware/Software/Services Solutions, Predominantly ServicesPSC D318	$4.6B	$7.1B	−36%	▼ 4
22	Miscellaneous Aircraft Accessories and ComponentsPSC 1680	$4.3B	$5.6B	−23%	▼ 2
23	Housekeeping- GuardPSC S206	$4.3B	$4.2B	+2%	▲ 3
24	Construction of Miscellaneous BuildingsPSC Y1JZ	$4.2B	$6.3B	−33%	▼ 5
25	Precious Metals Primary FormsPSC 9660	$4B	$2.3B	+76%	▲ 34
26	National Defense R&D Services; Atomic Energy Defense Activities; R&D Administrative ExpensesPSC AC24	$3.9B	$2.4B	+65%	▲ 27
27	Support- Management: OtherPSC R799	$3.9B	$4.2B	−6%	same
28	Laboratory Equipment and SuppliesPSC 6640	$3.8B	$2.2B	+72%	▲ 32
29	Fruits and VegetablesPSC 8915	$3.7B	$4.7B	−23%	▼ 5
30	Nuclear ReactorsPSC 4470	$3.5B	$3.1B	+11%	▲ 4
31	Marine Lifesaving and Diving EquipmentPSC 4220	$3.4B	$3.8B	−10%	▼ 3
32	Combat, Assault, and Tactical Vehicles, WheeledPSC 2355	$3.4B	$2.7B	+28%	▲ 14
33	Support- Administrative: OtherPSC R699	$3.4B	$2.3B	+44%	▲ 21
34	Guided Missile ComponentsPSC 1420	$3.3B	$1.7B	+91%	▲ 41
35	Housekeeping- Facilities Operations SupportPSC S216	$3.2B	$3.1B	+4%	same
36	R&D- Other Research and Development (Basic Research)PSC AZ11	$3B	$2.9B	+5%	▲ 5
37	Other Environmental ServicesPSC F999	$3B	$2.9B	+3%	same
38	Operation of Government-Owned Contractor-Operated (GOCO) R&D FacilitiesPSC M1HA	$3B	$2.9B	+3%	▲ 1
39	Information Technology SoftwarePSC 7030	$3B	$7.3B	−59%	▼ 23
40	Transportation/Travel/Relocation- Transportation: Space Transportation/LaunchPSC V126	$3B	$3.3B	−9%	▼ 7
41	National Defense R&D Services; Department of Defense - Military; Experimental DevelopmentPSC AC13	$3B	$421.1M	+602%	▲ 190
42	Reference Laboratory TestingPSC Q301	$2.9B	$1.5B	+102%	▲ 53
43	IT and Telecom - Business Application Software (Perpetual License Software)PSC 7A21	$2.8B	—	—	—
44	Electronic Countermeasures, Counter-Countermeasures and Quick Reaction Capability EquipmentPSC 5865	$2.8B	$2.2B	+29%	▲ 17
45	Support- Professional: Emergency Response/Disaster Planning/Preparedness SupportPSC R429	$2.8B	$1.2B	+126%	▲ 64
46	Social- OtherPSC G099	$2.6B	$399.6M	+541%	▲ 192
47	Medical- Evaluation/ScreeningPSC Q403	$2.5B	$2B	+29%	▲ 18
48	Construction of Office BuildingsPSC Y1AA	$2.5B	$1.9B	+29%	▲ 21
49	Airframe Structural ComponentsPSC 1560	$2.5B	$2.9B	−16%	▼ 11
50	Radar Equipment, Except AirbornePSC 5840	$2.4B	$5.5B	−56%	▼ 29
51	Maint/Repair/Rebuild of Equipment- Aircraft Components and AccessoriesPSC J016	$2.4B	$2.7B	−10%	▼ 4
52	Meat, Poultry, and FishPSC 8905	$2.3B	$3.3B	−32%	▼ 21
53	IT and Telecom - Business Application/Application Development Software as a ServicePSC DA10	$2.2B	—	—	—
54	Support- Management: FinancialPSC R710	$2.2B	$2.6B	−16%	▼ 5
55	Communications Security Equipment and ComponentsPSC 5810	$2.1B	$960.2M	+122%	▲ 71
56	R&D- Other Research and Development (Applied Research/Exploratory Development)PSC AZ12	$2.1B	$2.7B	−20%	▼ 11
57	Repair or Alteration of Office BuildingsPSC Z2AA	$2.1B	$1.7B	+23%	▲ 19
58	IT and Telecom- Facility Operation and MaintenancePSC D301	$2.1B	$2.8B	−27%	▼ 16
59	R&D- Space: Science/Applications (Applied Research/Exploratory Development)PSC AR22	$2.1B	$2.6B	−21%	▼ 11
60	IT and Telecom- Systems DevelopmentPSC D302	$2B	$3B	−32%	▼ 24
61	Support- Administrative: Mailing/DistributionPSC R604	$2B	$681.4M	+190%	▲ 106
62	Guided Missile Systems, CompletePSC 1425	$2B	$2.4B	−18%	▼ 10
63	Non-Nuclear Ship Repair (East)PSC J998	$1.9B	$1.9B	+1%	▲ 5
64	IT and Telecom- Annual Software Maintenance Service PlansPSC D319	$1.9B	$3.3B	−41%	▼ 32
65	Non-Nuclear Ship Repair (West)PSC J999	$1.9B	$2.1B	−10%	▼ 3
66	Repair or Alteration of Miscellaneous BuildingsPSC Z2JZ	$1.8B	$2.3B	−19%	▼ 11
67	BombsPSC 1325	$1.8B	$1.5B	+22%	▲ 25
68	Maint/Repair/Rebuild of Equipment- Engines, Turbines, and ComponentsPSC J028	$1.8B	$1.7B	+7%	▲ 11
69	Housekeeping- Custodial JanitorialPSC S201	$1.8B	$1.7B	+5%	▲ 5
70	Oper of Govt Other Industrial BldgPSC M159	$1.8B	$2.3B	−23%	▼ 14
71	R&D- Defense Other: Other (Advanced Development)PSC AD93	$1.7B	$2.3B	−24%	▼ 14
72	Architect and Engineering- General: OtherPSC C219	$1.7B	$2.1B	−16%	▼ 8
73	Environmental Systems Protection- Environmental RemediationPSC F108	$1.7B	$1.5B	+15%	▲ 20
74	Space R&D Services; Space Flight, Research and Supporting Activities; Basic ResearchPSC AR11	$1.7B	$1.7B	0%	▲ 4
75	National Defense R&D Services; Atomic Energy Defense Activities; Experimental DevelopmentPSC AC23	$1.7B	$1.4B	+20%	▲ 24
76	National Defense R&D Services; Department of Defense - Military; R&D Administrative ExpensesPSC AC14	$1.6B	$1.8B	−7%	▼ 4
77	Radar Equipment, AirbornePSC 5841	$1.6B	$948.6M	+72%	▲ 51
78	IT and Telecom - End User: Help Desk;Tier 1-2,Workspace,Print,Output,Productivity Tools (HW/Perp SW)PSC 7E20	$1.6B	—	—	—
79	National Defense R&D Services; Defense-Related Activities; Applied ResearchPSC AC32	$1.6B	$111.5M	—	▲ 409
80	IT and Telecom- IT Strategy and ArchitecturePSC D307	$1.5B	$2.5B	−38%	▼ 29
81	IT and Telecom- Telecommunications Network ManagementPSC D316	$1.5B	$2.6B	−43%	▼ 31
82	Construction of Other Administrative Facilities and Service BuildingsPSC Y1AZ	$1.5B	$2.1B	−30%	▼ 19
83	Passenger Motor VehiclesPSC 2310	$1.5B	$1.5B	−4%	▲ 7
84	Health R&D Services; Health Care Services; Applied ResearchPSC AN12	$1.4B	$1.6B	−13%	▼ 2
85	R&D- Defense System: Electronics/Communication Equipment (Basic Research)PSC AC61	$1.4B	$1.6B	−12%	▼ 2
86	Support- Management: Contract/Procurement/Acquisition SupportPSC R707	$1.4B	$1.3B	+8%	▲ 17
87	National Defense R&D Services; Department of Defense - Military; Applied ResearchPSC AC12	$1.4B	$439.8M	+215%	▲ 139
88	Ship and Boat Propulsion ComponentsPSC 2010	$1.4B	$220M	+530%	▲ 258
89	IT and Telecom - Compute: Servers (Hardware and Perpetual License Software)PSC 7B22	$1.4B	—	—	—
90	IT and Telecom- Telecommunications and TransmissionPSC D304	$1.4B	$3.5B	−61%	▼ 60
91	Fuel OilsPSC 9140	$1.4B	$1.3B	+8%	▲ 14
92	Support- Management: AdvertisingPSC R701	$1.4B	$1.6B	−13%	▼ 6
93	Support- Professional: CommunicationsPSC R426	$1.3B	$630.9M	+104%	▲ 83
94	Space VehiclesPSC 1555	$1.3B	$588.1M	+116%	▲ 89
95	Transportation/Travel/Relocation- Travel/Lodging/Recruitment: Passenger Air CharterPSC V221	$1.3B	$1.7B	−26%	▼ 18
96	Maint/Repair/Rebuild of Equipment- Training Aids and DevicesPSC J069	$1.3B	$1.5B	−13%	same
97	Transportation/Travel/Relocation- Transportation: Marine CharterPSC V124	$1.3B	$1.5B	−17%	▼ 6
98	Unmanned AircraftPSC 1550	$1.2B	$1.5B	−19%	▼ 9
99	Hardware, Weapon SystemPSC 5342	$1.2B	$1.9B	−36%	▼ 33
100	Education/Training- OtherPSC U099	$1.2B	$1.2B	+6%	▲ 13

PSC pages currently show their awards but not a recipient breakdown; the loader's per-recipient pass fetches NAICS and assistance codes only. That is a gap in this site, not in the source.

Questions

Which product or service code accounts for the most federal spending in FY2021?: Drugs and Biologicals, with $47.9B in FY2021.
How is a PSC different from a NAICS code?: PSC says what the government bought; NAICS says what industry sold it. A single purchase carries both, and they answer different questions.
Where does this ranking come from?: It is computed from USASpending.gov award records, which are U.S. government works and in the public domain. Each figure is the FY2021 dollars coded to that product or service code. TheFiscalFinder does the ranking; the underlying figures are the government's own.
How many codes are shown?: The top 100 for FY2021. Each row opens that code's own page, where the same money is broken out by year, by counterparty and by place.
Does a high position mean anything is wrong?: No. This is a description of where public money went in FY2021, computed from public records. It is not an allegation about anyone on it.

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Why the labels? The graph is only worth anything if the links are trusted. Facts taken straight from a federal filing are Source; figures we calculate are Computed; links we infer (corporate parents, districts, similar contractors, connections between records) are Inferred, worded carefully, never asserted as fact and never a claim that one thing caused another. Spot an error? Tell us.