Bid the OASIS+ solicitation that matches your SBA certifications, and bid Total Small Business alongside it. Size is not judged by domain. It is judged CLIN by CLIN, one NAICS code at a time, and you only get the CLINs where you and every team member are small. Grow out of those standards and the affected CLINs go dormant.
I spent eighteen years in federal acquisition as a Contracting Specialist and a Contracting Officer at GSA, IRS, DoD, DOI, HHS, FTC, and Energy, and I hold a FAC-C Level III and a Harvard Master of Liberal Arts. The pool decision on OASIS+ looks like a checkbox. It is the decision that sets which task orders you will ever see. This post covers pool selection and size. Domains and on-ramps are in my OASIS+ on-ramp and domain post, and teaming is in my JV versus proposed subcontractor post.
What are the six OASIS+ solicitations, and who can bid each one?
OASIS+ is six separate IDIQ solicitations, all continuously open since January 12, 2026 and current through Amendment 0009 (July 7, 2026). The five small business vehicles share a 36-of-50 credit threshold. Unrestricted requires 42 of 50, and 45 for the Enterprise Solutions domain, which exists only on Unrestricted.
| Solicitation | Who can bid | Credit threshold | Extra gate |
|---|---|---|---|
| Total Small Business (47QRCA23R0001) | Any concern small under the CLIN's NAICS | 36 of 50 | None beyond size |
| 8(a) (47QRCA23R0002) | Current SBA 8(a) participant on the offer date | 36 of 50 | Two QPs per domain from an SBA-certified 8(a) concern |
| HUBZone (47QRCA23R0003) | SBA-certified HUBZone, verifiable in SBS on the offer date | 36 of 50 | Two QPs per domain from a certified HUBZone concern |
| SDVOSB (47QRCA23R0004) | SBA-certified SDVOSB on the offer date | 36 of 50 | Two QPs per domain from a certified SDVOSB |
| WOSB (47QRCA23R0005) | SBA-certified WOSB/EDWOSB; pending status allowed if shown in SBS before the offer, certified before award | 36 of 50 | Two QPs per domain from a certified WOSB |
| Unrestricted (47QRCA23R0006) | Any business, including small firms and nonprofits | 42 of 50 (45 for Enterprise Solutions) | Subcontracting plan for other-than-small offerors |
The small business vehicles carry twelve domains. Unrestricted carries thirteen. GSA links all six on its OASIS+ continuously open solicitations page, and the Total Small Business notice on SAM.gov controls if anything conflicts.
Is OASIS+ small business size decided by domain or by NAICS code?
By NAICS code. Every NAICS in a domain is its own CLIN with its own size standard. You represent size for each one, and GSA awards only the CLINs where you, including all proposed team members, are small. Your Primary NAICS, the largest standard among your awarded domains, exists only for SAM.gov reporting.
Here is how that plays out in the Management and Advisory domain under Section C.2.1.1 of the small business RFP:
| CLIN | NAICS | Current size standard |
|---|---|---|
| 10101 | 541611 Administrative and General Management Consulting | $24.5M |
| 10102 | 541612 Human Resources Consulting | $29.0M |
| 10103 | 541613 Marketing Consulting | $19.0M |
| 10104 | 541614 Process, Physical Distribution, and Logistics Consulting | $20.0M |
| 10105 | 541618 Other Management Consulting | $19.0M |
| 10106 | 541620 Environmental Consulting | $19.0M |
| 10107 | 541690 Other Scientific and Technical Consulting | $19.0M |
| 10108 | 541990 All Other Professional, Scientific, and Technical | $19.5M |
A firm averaging $22 million in receipts that scores 36 credits in this domain wins CLINs 10101 and 10102 only. It never sees fair opportunity on the other six. Add a proposed subcontractor averaging $26 million and you lose 10101 too, because the team's largest size governs.
The trap that surprises people: GSA's June 2026 FAQ says additional CLINs inside an awarded domain cannot be requested later, because CLINs were fixed by size at offer. When I sat as a Contracting Officer, the size problems I saw were rarely fraud. They were SAM.gov NAICS lists nobody had refreshed. On OASIS+, a stale SAM profile now costs you CLINs permanently. If you need to clean that up first, here is how to check your SAM size representations.
Can you bid more than one OASIS+ solicitation?
Yes. You may submit to every solicitation you qualify for, but each one is a separate submission. An SDVOSB proposal does not count as a Total Small Business proposal. You cannot hold two contracts in the same family under one UEI, and existing small business awardees can add a socioeconomic vehicle later through Lateral Springboarding.
- Certified small firms: bid your certification vehicle and Total Small Business. The set-aside orders you want are issued under those vehicles, not Unrestricted.
- Small firms with 42-credit depth: add Unrestricted. Section H.4.1 of the Unrestricted contract prohibits set-asides, so it is a hedge, not a substitute.
- Newly certified awardees: use Lateral Springboarding (Section H.11.2). It reuses your awarded QPs, team, and ceiling rates, but only moves between the five small business vehicles. GSA's FAQ confirms Unrestricted holders cannot springboard.
- Firms near a size ceiling: see the next two sections before you choose.
What happens when you grow out of your size standard on OASIS+?
Nothing happens until a rerepresentation trigger. Then you rerepresent each CLIN against the size standard in effect that day. CLINs where you are now other than small go dormant. If you are other than small on your Primary NAICS, the whole contract goes dormant. You keep performing existing orders and options.
Section G.3.1.7.2 applies FAR 52.219-28 (as deviated) and 13 CFR 125.12 this way:
| Trigger | Deadline | Consequence if other than small |
|---|---|---|
| Novation | Within 30 days of execution | Affected CLINs dormant; no return to active for transaction-driven changes |
| Merger or acquisition without novation | Within 30 days | Same as above |
| End of year five | 60 to 120 days before, prior to the option | Affected CLINs dormant; whole contract if Primary NAICS fails |
| Ordering CO requests recertification on one order | With that order's offer | Ineligible for that order only (13 CFR 121.404(c)(2)) |
Dormant is not termination. Under Section H.12 you cannot compete for new orders on dormant CLINs, but you finish existing task orders, accept options, and may receive a logical follow-on. As a Contracting Specialist, the year-five rerepresentation was the one I watched contractors miss most. The deadline sits inside a 60-day window, and the clause and the FAR 52.219-28 text both require written notice to the CO, not just a SAM update.
What if you lose your 8(a), WOSB, SDVOSB, or HUBZone status?
Treat it like losing size. On the socioeconomic vehicles, a contractor that does not remain SBA-certified at rerepresentation has the affected CLINs, or the whole contract, placed in dormant status. The 8(a) vehicle adds a harder rule: transferring ownership or control without an SBA waiver can mean dormancy, termination for convenience, or off-ramp.
- 8(a): the contract must be performed by the original awardee unless SBA grants a waiver under 13 CFR 124.515. Request it before ownership changes hands.
- HUBZone: the RFP expects you to maintain HUBZone eligibility throughout performance, not just on the offer date.
- WOSB and SDVOSB: the SAM.gov record must show the SBA certification. A lapse surfaces at your next rerepresentation.
- Your fallback: Section H.12 lets a dormant contractor propose to Unrestricted. The 8(a) RFP extends that to any vehicle you still qualify for, such as Total Small Business.
Should you bid Unrestricted before you outgrow small?
If you expect to cross your Primary NAICS standard before your year-five rerepresentation, yes, as soon as you can score 42. Holding both vehicles keeps you competing through the transition. If you cannot reach 42 today, spend the time building qualifying projects, not waiting.
Two cautions. Unrestricted requires other-than-small offerors to submit an individual or commercial subcontracting plan under Section L.5.8.5, and a small firm competing there faces the largest integrators without any set-aside protection. Across our 70+ GSA contract awards, the firms that handled growth well planned the next vehicle a year early.
How could SBA's proposed size standards change the OASIS+ math?
A lot, but not yet. SBA's August 20, 2026 proposal would push seven of the eight Management and Advisory NAICS codes to $295 million. It is only a proposal. Comments close November 20, 2026, no effective date exists, and you must represent under today's table.
| NAICS | Current | Proposed (91 FR 53763-53764) |
|---|---|---|
| 541611, 541612, 541613, 541614, 541618, 541620, 541690 | $19.0M to $29.0M | $295M |
| 541990 | $19.5M | $61M |
| 541330 Engineering Services | $25.5M | $252M |
| 541715 R&D (physical, engineering, life sciences) | 1,000 employees | 2,800 employees |
Read the proposed rule and the extension at 91 FR 60524. For OASIS+, three effects matter. First, rerepresentation uses the standard in effect on the rerepresentation date, so a final rule before your year-five window could keep a growing firm small. Second, SBA proposes eliminating size standard exceptions, which today drive Primary NAICS assignments such as the $47 million 541330 exceptions. Third, CLINs are fixed at offer, and GSA has not said whether a final rule would let current awardees pick up CLINs they missed. My full breakdown of the SBA proposal covers the rest.
What should you do now?
- Pull your SAM.gov size representation for every NAICS in every domain you plan to bid, and list which CLINs you would actually win.
- Confirm the size of every proposed subcontractor before you name them. The largest team member sets your CLINs.
- Bid your certification vehicle and Total Small Business as two separate submissions.
- Calendar your year-five rerepresentation window and any pending merger or acquisition 30-day clock.
- If you will outgrow your Primary NAICS standard, start the 42-credit Unrestricted build now.
- Do not wait on SBA's proposal. The solicitations are open today and the rule has no effective date.
If you want a second set of eyes on which OASIS+ pools fit your size and certifications before you commit proposal hours, talk with our federal sales team and we will map your CLINs NAICS by NAICS.
Frequently Asked Questions
How many OASIS+ solicitations are there?
Six: Total Small Business, 8(a), HUBZone, SDVOSB, WOSB, and Unrestricted. All six have been continuously open since January 12, 2026 and are current through Amendment 0009, issued July 7, 2026. Each requires its own submission.
What is the OASIS+ credit threshold for small business versus unrestricted?
The five small business solicitations require 36 of 50 credits per domain. Unrestricted requires 42 of 50, except the Enterprise Solutions domain, which requires 45 and is only available on Unrestricted.
Is OASIS+ size status based on the domain or the NAICS code?
The NAICS code. Each NAICS in a domain is a separate CLIN, and GSA awards only the CLINs where the offeror and all proposed team members are small. The Primary NAICS on your contract is assigned for SAM.gov reporting and uses the largest size standard in your awarded domains.
Can I add CLINs later if my company shrinks below a size standard?
Not within a domain you already hold. GSA's June 2026 FAQ states additional CLINs cannot be requested because they were awarded based on size at the time of offer. You can add new domains through an Add Domain Modification, with a size representation as of that submission date.
What happens to my OASIS+ small business contract if I become other than small?
At a rerepresentation trigger, CLINs where you are no longer small go dormant, and the whole contract goes dormant if you fail your Primary NAICS. You keep performing existing task orders and options but cannot compete for new orders on dormant CLINs. You may propose to the Unrestricted vehicle.
When does OASIS+ require size rerepresentation?
Within 30 days after a novation or a merger or acquisition, and 60 to 120 days before the end of year five, prior to the option. An ordering contracting officer can also require recertification for a specific order, which affects only that order.
Will SBA's proposed size standards change my OASIS+ eligibility?
Not until SBA issues a final rule. The August 20, 2026 proposal would raise most Management and Advisory NAICS to $295 million, and comments close November 20, 2026. Rerepresentation uses the standard in effect on that date, so a final rule could matter at your year-five window.