MAS consolidation: from 24 Schedules to one Multiple Award Schedule

From the Schedule program's early decades through 2019, GSA operated 24 separate Schedules, each targeted at a specific product or service area. A partial list of the more recognizable ones:

• IT Schedule 70 — information technology products and services. The largest of the old Schedules by revenue.
• Professional Services (PSS) Schedule 00CORP — consolidated Professional Services Schedule for management consulting, financial, environmental, and engineering services.
• Schedule 736 — Temporary Administrative and Professional Staffing.
• Schedule 738 II — Language Services.
• Schedule 874 — Mission-Oriented Business Integrated Services (similar professional-services scope).
• Schedule 75 — Office Products.
• Schedule 23 V — Automotive Superstore.

Each Schedule had its own solicitation document, its own SIN numbering convention (often overlapping numerically with other Schedules), its own contracting officer bench, and its own evaluation criteria. A vendor selling across multiple areas might hold three or four separate Schedule contracts, each with separate compliance obligations.

The consolidation had three main drivers.

• Administrative complexity for holders. A vendor selling IT, consulting, and staffing might hold Schedule 70 + PSS + 736, with three separate sales-reporting cycles, three sets of modifications, and three different CO relationships. Consolidation collapses that into one contract.
• Confusing buyer experience. A federal CO with a requirement that spanned IT hardware and installation services might have to split the requirement across two Schedules or award non-Schedule. A single MAS with all offerings in one place simplifies buying.
• GSA internal efficiency. 24 solicitations, 24 modification queues, 24 evaluation processes. Consolidation reduced GSA's own operating overhead significantly.

Public documentation of the consolidation goals framed it as a simplification for vendors, buyers, and GSA itself. By all three measures the consolidation is widely viewed as a success.

For existing holders

Each holder's existing Schedule contract was novated onto the new MAS framework. The underlying contract terms, pricing, and labor categories stayed the same; only the structural placement changed. Existing SINs were mapped into the new Large Category / Subcategory / SIN tree. Most migrations were automatic; some edge cases required holders to review and confirm SIN assignments.

Holders that previously held multiple separate Schedules saw those separate contracts consolidated into one MAS contract covering all their SINs. Sales reporting, modifications, and CO interaction moved to the single MAS lane.

For new holders

New offers from 2020 forward go through a single MAS solicitation. The vendor selects SINs across any of the 12 Large Categories in one offer package. Pre-consolidation, a vendor with offerings across multiple areas would have had to submit separate proposals to each relevant Schedule.

For buyers

Buyers use GSA Advantage and eBuy the same way they did before, but the catalog is now structured around the 12 Large Categories rather than 24 Schedules. Searches by SIN work the same way; searches by category now reach across what used to be multiple Schedules.

For the SIN numbering

Many SIN numbers changed during consolidation. Some Schedule 70 SINs, for instance, were renumbered to align with the NAICS-derived convention of the consolidated structure. The underlying scope of the SIN usually did not change, but the identifier did.

The official name is Multiple Award Schedule (MAS). Federal buyers, GSA staff, and holders informally still say "GSA Schedule" as a catch-all. Both are correct; either will be understood.

When you encounter older names in documentation or conversation:

• "Schedule 70" → Large Category 1 (Information Technology) on MAS.
• "PSS" or "00CORP" or "Schedule 00CORP" → roughly Large Category 8 (Professional Services) on MAS.
• "736" → Human Capital category, specifically staffing-related SINs.
• "874" → Professional Services Large Category, specifically management consulting SINs.

Solicitations issued before 2020 still exist in agencies' historical records and procurement data; the old Schedule numbers persist in those records. New solicitations issued after 2020 use MAS SIN numbering under the consolidated structure.

A few things are often misunderstood as having changed with consolidation.

• The Industrial Funding Fee (0.75%) stayed the same.
• The 5-year base plus three 5-year option structure stayed the same.
• The commercial-trading prerequisite (two years for most SINs) stayed the same.
• Pricing methodology (CSP and the Price Reductions Clause, or TDR as an alternative) stayed the same.
• BPAs issued against Schedules still work the same way.

Consolidation was a structural reorganization, not a programmatic rewrite. The underlying mechanics of the MAS program are substantially the same today as they were in 2019.