PSC/FSC codes tell FPDS what the Government bought. They're simpler than NAICS — but you still need to pick the right one.
PSC/FSC codes are reporting codes — they classify what the Government bought so agencies can track spend, spot trends, and build smarter contract strategies.
At the simplest level, a PSC/FSC code tells FPDS what the Government bought. That's it.
PSC stands for Product and Service Code. It's the four-character code reported in FPDS for products, services, and R&D actions. FSC stands for Federal Supply Class — the product-side classification structure. In practice, people often say "FSC" when they mean products, but the field reported in FPDS is always the PSC field.
PSC/FSC matters because it helps the Government group similar purchases together for reporting and spend analysis. That data lets agencies see buying patterns across offices and across time.
PSC codes are four characters. The first character tells you whether it's a product, service, or R&D buy:
You don't need to memorize the structure. You just need to know it exists so you can navigate the PSC Manual efficiently.
Use the same question every time: What is the principal thing the Government is buying? Start there. Don't start with the vendor. Don't start with the office asking for it. Start with the requirement.
New contracting officers sometimes confuse these two. Here's the simplest way to keep them straight:
Tell us what you're buying and get guidance on which PSC category to start with.
Select the category that best describes the principal thing being purchased.
Product PSC codes are four-digit numeric codes based on the Federal Supply Classification. The first two digits identify the commodity group.
Common product groups you'll see:
How to find yours: Open the PSC Manual, look up the Federal Supply Group that matches what you're buying, then narrow to the four-digit class that fits best.
Service PSC codes start with a letter followed by three digits. The letter tells you the service category.
Common service series:
Focus on the work being performed. If the contractor is cleaning a building, that's S201 (Custodial-Janitorial), even if the contract includes some cleaning supplies. The supplies are incidental — the principal purpose is the service.
R&D PSC codes use the A series. They're organized by scientific discipline and development stage.
The second character of an R&D PSC often identifies the development stage: basic research, applied research, advanced development, or operational systems development. The remaining digits specify the scientific or technical discipline.
Key distinction: R&D codes are for actual research and development activities. If you're buying IT services that support an R&D program but the contractor is providing help desk support, that's still a D-series service code, not an A-series R&D code.
When a purchase includes both products and services, use the PSC that matches the predominant purpose of the acquisition.
Ask: Where are most of the dollars going? If 70% of the spend is on the service and 30% is on supplies that support the service, code it as a service. If 80% is a product purchase with some installation labor, code it as a product.
Seven scenarios. Pick the best answer. See if the training stuck.
Use these tools to find the right PSC/FSC code and verify your selection.
The official source for current Product and Service Codes. This is your primary reference when you need the actual code list and descriptions.
Open the PSC ManualA practical search tool that narrows PSC/FSC options based on keywords or the NAICS code you've already selected. Great for cross-referencing.
Open PSC ToolUseful when you want to understand how the code is reported in FPDS and see how other agencies have coded similar purchases.
Open FPDSThe Federal Supply Classification system that underpins product-side PSC codes. Helpful when you need to navigate the commodity group structure.
GSA Supply OperationsSearch awarded contracts to see what PSC codes other contracting officers used for similar buys. Helpful when you're unsure between two codes.
Search SAM.govExplore federal spending by PSC code. See how much agencies spend in each category and what contract vehicles they use. Great for market context.
Open USAspending