GSA OASIS+ On-Ramp

One Acquisition Solution for Integrated Services Plus – On-Ramp (OASIS+ On-Ramp)

GDI Consulting — OASIS+ & Self-Scoring Performance

As a recognized leader on GSA’s OASIS+ and in self-scoring proposal strategy, GDI Consulting (GDIC) has maintained a 98% win rate across Unrestricted and Small Business tracks. In OASIS+ Phase I, 97 of 98 client submissions received awards, spanning small businesses to major defense contractors. Selected outcomes are detailed in our OASIS+ case studies. We apply the same disciplined self-scoring methodology, evidence curation, and compliance rigor to OASIS+ On-Ramp and Phase II.

Note: Award outcomes reflect government postings as of August 2025.

OASIS+ On-Ramp Summary

GSA OASIS+ On-Ramp is part of GSA’s $60-billion-plus, Best-in-Class IDIQ family, designed to give federal agencies streamlined access to a broad range of integrated professional services. Under the On-Ramp process, the program maintains its eight core Phase I domains, with no single contract ceiling and the flexibility for agencies to issue task orders of any size. There is no limit on the number of awards per domain pool, and the vehicle retains its ten-year ordering period (five-year base plus one five-year option). By keeping solicitations open for new qualified vendors, the OASIS+ On-Ramp process ensures agencies can draw from a continually refreshed pool of capable contractors to meet mission-critical needs quickly.

GSA’s OASIS+ On-Ramp pathway builds on the Phase I foundation by reopening existing domain solicitations to admit additional qualified contractors, including both large and small businesses across all socioeconomic categories. This process opens the door for firms that missed the initial competition or have since strengthened their capabilities, with size standards and set-aside provisions consistent with the original domains. Evaluations follow the same self-scoring methodology used in Phase I, ensuring a fair, transparent, and efficient selection process. Through continuous On-Ramping, OASIS+ preserves its role as a high-demand “one-stop shop” for federal professional services while expanding opportunities for both incumbents and new entrants.

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OASIS+ On-Ramp in a Nutshell:

Item	Details
Agency:	General Services Administration (GSA)
Title:	One Acquisition Solution for Integrated Services Plus, On-Ramp (OASIS+ On-Ramp)
Solicitation Number:	SAM Notice ID: 47QRCA21N0001
Status:	Solicitations will re-open in FY25 and will be continuously open to receive offers
Due Date:	TBD
Contract Period:	10 Years
Type of Contract:	Multiple Award Contract (MAC) IDIQ
Number of Awards:	TBD
Maximum Contract Ceiling Value:	No ceiling
NAICS Codes:	238220, 238290, 238320, 238990, 336611, 485999, 488190, 488490, 488999, 531312, 541310, 541350, 541360, 541370, 541380, 541611, 541612, 541613, 541614, 541618, 541620, 541690, 541713, 541714, 541715, 541720, 541990, 561210, 561499, 561611, 562112, 562211, 562910, 621511
Size Standard:	(a) Small Business HUBZone Small Business Service-Disabled Veteran-Owned Small Business Total Small Business Woman-Owned Small Business Unrestricted
Pools:	OASIS+ On-Ramp will group service offerings within Domains that follow a category management structure.
Partnering:	Joint Ventures and CTAs (Prime/Sub) are allowed
Domains:	Management and Advisory Technical and Engineering Research and Development Intelligence Services Enterprise Solutions Environmental Services Facilities Logistics
Qualification Criteria:	Qualifying Project Experience Federal Experience Government-approved systems and rates Other certifications

Solicitation Documents:

Item	Link
GSA OASIS+ Activity Feed	Webpage
GSA OASIS+ Page	Webpage

GDIC Related Content:

Item	Link
Article: OASIS+ On-Ramp vs. Phase II	Post Link
Webinar: OASIS+ On-Ramp	YouTube Link
OASIS+ Phase I Case Studies	Webpage
HCaTS Case Study: Winning 3 HCaTS Contracts	Webpage
OASIS+ Contract Support Services	Webpage

OASIS+ On-Ramp Evaluation Criteria

To receive a Domain award, the offer must meet or exceed a specified qualification threshold. The Offeror has the discretion to use any combination of qualifications detailed in the qualification matrix to achieve the threshold. The qualifications matrix includes both project experience and other relevant qualifications (e.g., corporate level qualifications, applicable certifications).

Ultimately, the Offeror is responsible for clearly demonstrating that the claimed criteria are met. GSA will remove from consideration any proposal element where the Offeror does not clearly demonstrate that the claimed criteria is met, based on being non-responsive (non-compliant) to the solicitation requirements.

Criteria in the Qualifications Matrix fall into the following categories:

Qualifying Project Experience

The Offeror may propose using a maximum of 5 Qualifying Projects (QPs). The Offeror is limited to only 5 QPs to achieve QP-based criteria. A number of criteria in the qualifications matrix are derived from these QPs. Relevance: With respect to Relevance of QPs, that criterion is based on Relevance to the specific Domain’s scope.

Federal Experience

These qualifications do not need to come from the QPs, and can be obtained through other projects if These qualifications will generally apply across GSA OASIS Plus (OASIS+) Domains.

Government-approved systems and rates

These qualifications are based on systems and rates approved by a cognizant Federal These qualifications will generally apply across GSA OASIS Plus (OASIS+) Domains.

Other certifications

These qualifications are based on certifications issued by third party (i.e., non-Governmental) These qualifications will generally apply across GSA OASIS Plus (OASIS+) Domains.

OASIS+ On-Ramp Enrollment & Awards

According to GSA, OASIS Plus (OASIS+ On-Ramp) will be an open enrollment opportunity, with the intention of enrolling more contractors. GSA intends to award separate IDIQ contracts under each of the following categories:

8(a) small business
HUBZone small business
Service-disabled veteran-owned small business
Total small business
Women-owned small business
Unrestricted

Qualification standards for each IDIQ will be designed to achieve targeted socioeconomic representation. Unrestricted solicitations may require a higher qualifying threshold and additional qualifying criteria, such as: past performance exceeding subcontracting goals, greenhouse gas (GHG) emissions disclosures, experience performing IAW applicable labor laws (e.g., Service Contract Labor Standards, Collective Bargaining Agreements), experience with and/or plan to support other priorities (e.g., AbilityOne and minority-owned SBs).

Proposal Preparation

GSA OASIS Plus (OASIS+ On-Ramp) is a Self-Scoring solicitation, meaning bidders score themselves on one or more factors according to the evaluation criteria (or evaluation matrix) and provide documentation to support their assertions. To succeed in this endeavored:

a bidder must understand the qualification requirements and evaluation criteria
recognize its qualifications that best match the requirements and achieve the highest score
gather and provide documentation and evidence to substantiate those qualifications

Compared to other solicitations, in self-scoring solicitations each bidder must do the work of both a bidder and a contracting officer at the same time.

How can GDIC Help?

GDI Consulting’s government opportunity experts support clients from early-stage market intelligence through to compliant, score-maximized proposal delivery. In OASIS+ Phase I, we prepared 97 successful proposals—achieving a 100% win rate in the Unrestricted track and 95% in Total Small Business. Our services are responsive and collaborative, keeping clients engaged and informed at every step. From identifying and managing qualified opportunities to submitting proposals that meet self-scoring and technical requirements, we adapt to your goals and integrate your input into each engagement. Contact our expert Federal Government proposal writers now!

Ask Us How We Can Help You Win a Place in OASIS+