FY2025 obligations by the NAICS code on the award
45% of the $33.2B obligated under R425 in FY2025 went to awards coded NAICS 541330.
- 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)not in NAICS 2022$2.3B
FY2025 federal contract obligations, USAspending.gov
PSC R425 covers professional engineering and technical support services: the systems engineering and technical assistance (SETA) work, program-office support, and technical advisory services that sit beside nearly every large federal acquisition program. At $33.2 billion in FY2025 obligations, it is one of the biggest single service codes in federal contracting.
PSC vs NAICS: why you need both
Agencies classify what they are buying with a PSC and classify the industry of the work with a NAICS code. Every solicitation carries one of each, and vendors who only track NAICS codes miss opportunities filed under service codes they never watch. R425 is the canonical example: the same R425 requirement can be solicited under engineering services, R&D, or management consulting NAICS codes depending on the program office.
Where R425 dollars actually land
The largest share of FY2025 R425 awards, $15.1 billion, was made under NAICS 541330 Engineering Services, followed by R&D code 541715 ($4.7B), its legacy twin 541712 ($2.3B), 541990 ($1.9B), and management consulting 541611. If your registration covers 541330 and you sell technical support, R425 is the PSC to build your opportunity searches around.
PSC R425 FAQ
What does PSC R425 cover?
Professional engineering and technical support services: SETA support, program-office technical assistance, engineering analysis, and technical advisory work that supports government programs without being the hardware or R&D contract itself.
What NAICS code should I register under to win R425 work?
In FY2025, $15.1B of R425 obligations were awarded under NAICS 541330 (Engineering Services), with 541715 (R&D) second. Register under the code that matches what your company actually does; 541330 is the most common pairing on real R425 awards.
How is a PSC different from a NAICS code?
The PSC describes what the government is buying on an award; the NAICS code describes the industry of the work. Every federal contract action carries both. You pick your NAICS codes when you register in SAM.gov; contracting officers assign both codes on the award.