Written and maintained by CASRAI Editorial Board
Last updated
Last verified 2026-08-26 against the primary regulatory text of FAR 8.405-2 (Federal Supply Schedule ordering procedures) and FAR 8.401 (ordering-activity definitions). Dollar thresholds change on a regulatory cycle; the ordering mechanics described below do not.
GSA eBuy is the online request-for-quote (RFQ) system that sits on top of GSA’s Multiple Award Schedule (MAS) program — the same pre-competed federal contract vehicle covered in CASRAI’s GSA Schedule Contract vs. Vendor “GSA Pricing” comparison. Where that piece is about verifying a vendor actually holds a Schedule contract, this guide is about the tool used to buy against one: who is allowed to post a request on eBuy, how Schedule contract holders see and answer it, and how the whole process differs from an open-market solicitation.
What GSA eBuy actually is
eBuy is not a storefront and not open to the general public. It is a posting board, restricted to authorized federal buyers, where an ordering activity — FAR 8.401’s term for an entity authorized to place orders or establish blanket purchase agreements (BPAs) against MAS contracts — posts a statement of work and evaluation criteria, and Schedule contract holders whose Special Item Numbers (SINs) match the posting submit competing quotes. It is the ordering mechanism FAR Subpart 8.4 uses to keep Schedule buying competitive without running a full open-market solicitation for every purchase.
Who can actually post an RFQ
This is the part general explainers usually skip, and it is the single most important fact for a research institution evaluating whether eBuy is even available to it: eBuy access is the exception for non-federal entities, not the default.
- Federal executive agencies are ordering activities by default and can post to eBuy for any MAS purchase within their authority — this includes federal intramural and agency-operated research facilities: the NIH Intramural Research Program, VA medical-center research services, military medical research labs, and other federally operated labs that are themselves part of a federal agency.
- Federally funded research and development centers (FFRDCs) and national laboratories typically have their own negotiated ordering authority, distinct from a standard university’s status, and should confirm their specific authorization rather than assume MAS access follows automatically from federal funding.
- A university or independent research institution that is not itself a federal agency is generally not an eligible ordering activity and cannot post to eBuy for routine lab or medical equipment purchases. The narrow exceptions — GSA’s Cooperative Purchasing Program and the Disaster Purchasing Program — extend Schedule access to certain state, local, and tribal government buyers, but they apply only to specific Schedules and SINs (chiefly IT, security, and law enforcement equipment, plus disaster-recovery purchases) and do not create general lab/medical-equipment purchasing rights for academic institutions.
If your institution isn’t a federal agency, FFRDC, or otherwise-authorized ordering activity, the practical takeaway isn’t that GSA Schedule pricing is irrelevant to you — vendors will often quote it as a reference point — it’s that you can’t place the order the way a federal ordering activity does. See the section below on what to do instead.
How an RFQ moves from posting to award
FAR 8.405-2 routes an MAS purchase differently depending on dollar value, and eBuy’s role changes at each threshold. As of the current inflation-adjusted figures (effective October 1, 2025), the general simplified acquisition threshold (SAT) is $350,000 and the general micro-purchase threshold is $15,000 — see CASRAI’s Simplified Acquisition Threshold and Micro-Purchase Threshold guide for the full breakdown, including the higher thresholds that apply to certain categories.
- At or below the micro-purchase threshold ($15,000): the ordering activity may select any capable Schedule contractor directly — no RFQ posting is required, though activities are expected to rotate orders among vendors rather than defaulting to the same one every time.
- Above the micro-purchase threshold, below the SAT: FAR 8.405-2 requires the ordering activity to provide the RFQ — including the statement of work and evaluation criteria — to at least three Schedule contractors capable of fulfilling the requirement, or document the specific circumstances justifying fewer than three.
- At or above the SAT ($350,000): the ordering activity must either post the RFQ on eBuy so that every Schedule contractor holding the relevant SIN can see and respond to it, or provide the RFQ to as many contractors as practicable to secure at least three quotes — with the reasoning documented either way. This is the threshold at which eBuy shifts from “a tool an ordering activity may use” to the standard way the competitive-posting requirement gets satisfied.
Above every threshold, the file has to show what was done and why — this is the same documentation discipline CASRAI’s sole-source justification guide covers for the case where competition is skipped entirely rather than run through eBuy.
How Schedule contract holders respond
A vendor that holds a Schedule contract monitors eBuy for postings that match its awarded SINs, reviews the statement of work and stated evaluation criteria, and submits a quote priced against its already-negotiated Schedule rates — it cannot quote a price outside what its Schedule contract authorizes for that SIN. The ordering activity evaluates responses against the criteria it published (typically price, technical capability, and delivery), makes an award, and documents the basis for selection, the same evaluation discipline required under any competitive procurement, just compressed into the pre-vetted Schedule contractor pool rather than the open vendor market.
eBuy vs. an open-market solicitation
| GSA eBuy (Schedule/MAS order) | Open-market solicitation | |
|---|---|---|
| Who can respond | Only vendors holding a Schedule contract with a matching SIN | Any responsible vendor, Schedule holder or not |
| Pricing basis | Already negotiated and GSA-approved at the Schedule/contract level | Negotiated fresh for this specific solicitation |
| Competition already satisfied | Yes — GSA’s negotiation of the underlying Schedule contract is treated as having satisfied full-and-open competition; the RFQ step still has to run per FAR 8.405-2, but a J&A memo for the underlying contract itself is not required | No — this specific procurement has to independently satisfy applicable competition requirements (FAR Part 13, 15, or 2 CFR 200.320 for non-federal awardees) |
| Typical use case | Standard, commercially available supplies/services already on Schedule | Anything not on Schedule, or where an ordering activity isn’t eligible to use Schedules at all |
| Who can run it | Federal ordering activities and specifically authorized non-federal entities only | Any buyer following its own applicable procurement rules |
If your institution isn’t an eligible ordering activity
Most university research institutions fall here, and eBuy access isn’t the goal — your own institutional procurement process, governed by 2 CFR 200’s procurement standards rather than FAR Subpart 8.4, is. Two places GSA Schedule pricing still matters even without eBuy access:
- Price-reasonableness benchmarking. A vendor’s GSA Schedule rate is a documented, GSA-negotiated price point you can cite when justifying that a quote you received independently is reasonable — useful evidence for a price-reasonableness determination, distinct from actually placing the order through the Schedule.
- Verifying a vendor’s “GSA pricing” claim. Vendors sometimes market a discount as “GSA pricing” without actually holding a Schedule contract for that item. That confusion — and how to check it — is the whole subject of CASRAI’s GSA Schedule Contract vs. Vendor “GSA Pricing” comparison.
For the full sequence of decisions a research institution works through before any equipment purchase — threshold, competition method, documentation, and which purchasing vehicle applies — see CASRAI’s Federal Procurement for Research Institutions guide, which this page’s eBuy-specific detail extends.
Frequently asked questions
Is GSA eBuy the same as GSA Advantage!?
No. GSA Advantage! is a fixed-price online catalog/storefront for buying items directly off Schedule at posted prices. eBuy is the RFQ system used when the ordering activity wants competing quotes rather than a straight catalog purchase, or when the requirement needs a statement of work rather than an off-the-shelf item.
Can a university ever get access to GSA eBuy?
Only if the university itself qualifies as an ordering activity under FAR 8.401, or falls under one of the narrow cooperative-purchasing or disaster-purchasing authorities GSA extends to specific non-federal entities for specific Schedules — general lab or medical equipment purchasing by a standard academic institution does not qualify. A federal intramural or FFRDC-operated research facility is a different case and may already have ordering authority.
Does posting on eBuy replace the need for a justification memo?
It replaces the need to justify sole-sourcing the underlying Schedule contract itself, since GSA’s own competition when establishing the Schedule already covers that. It does not replace the ordering activity’s obligation to document how it satisfied FAR 8.405-2’s three-quote (or eBuy-posting) requirement for this specific order.
What’s a SIN, and why does it matter for eBuy?
A Special Item Number (SIN) is GSA’s classification of the specific category of supply or service a Schedule contract covers. eBuy routes an RFQ only to contractors holding the SIN(s) the posting activity selects — post under the wrong SIN and the contractors who could actually fulfill the requirement may never see it.
