U.S. General Services Administration

One Acquisition 

Solution for 

Integrated 

Services (OASIS)

OASIS, OASIS Small Business (SB), and OASIS 8(a) 

GSA’s OASIS Tier 3, Best-in-Class (BIC) solutions make 

procuring complex professional services expedient by 

maximizing streamlined acquisition processes. 

GSA has already done the 

heavy lifting of negotiating 

and awarding a master 

governmentwide indefinitedelivery/indefinite-quantity 

(IDIQ) program (under 

FAR 16.505), allowing agency 

acquisition professionals 

to focus on mission-critical 

requirements.

OASIS core disciplines:

• Engineering services

• Scientific services

• Logistic services

• Financial services

• Management consulting 

services

• Program management

• Research and development
Benefits of using OASIS:

• Multiple-award, IDIQ contracts (MACs) available for governmentwide use 

• Multidisciplinary governmentwide contract for professional/integrated services 

• Single solution for complex requirements

• Multiple technical areas/mission spaces

• Maximum flexibility for ancillary support

0 Labor and materials

0 Other Direct Costs (ODCs)

• Supports commercial and non-commercial acquisition

• Supports all contract types, including FFP, T&M, cost, hybrids, etc.

• Prohibits protests on orders valued at less than $10 million

• No maximum order or ceiling limitations

• Direct access to socioeconomic concerns to maximize small-business participation

• Designed for long periods of use

0 Task order can be awarded through 2024

0 Task order’s Period of Performance is through 2029

• Ordering CO determines:

0 Terms and conditions and/or provisions and clauses

0 Evaluation criteria

0 Method of awards

• GSA-managed program and master-contract administration

• Avoids the cost and time to award and administer agency IDIQ contracts

• Reduces contract duplication and administrative resource allocation

• Flexible contract vehicle providing a single solution for complex professional 

services in multiple technical areas/mission spaces with maximum flexibility for 

ancillary labor, materials, and ODCs

• Highest-rated community of contractors who have undergone rigorous pool 

qualification to ensure competency including past experience, past performance, 

and certifications

• Proven experience – with every contractor having experience supporting 

federal customers

• Master-level on-ramp procedures ensure greater competition and larger access 

to socioeconomic concerns, as well as expand opportunities to secure 

OMB Tier 3, BIC task orders

• Streamlined acquisition procedures

0 FAR Subpart 16.505 streamlined acquisition procedures keep it simple

0 Offers the ordering contracting offer broad discretion in developing task-order 

placement procedures

0 No synopsizing or posting solicitations on SAM.gov

0 No requirement for FAR Subpart 15.3 source selection
How to Issue an Order under OASIS

1. Delegation of Procurement Authority (DPA) is required to issue an order on OASIS.

2. Determine the OASIS principal-purpose NAICS code of your requirement (this determines 

the pool). 

3. Determine if setting aside the order to small business. 

4. Build the solicitation using FAR 16.505 ordering procedures.

5. Issue order solicitation under the determined pool.

• OASIS pool links or eBuy were designed for this purpose to ensure fair opportunity 

requirements FAR 16.505(b)(1).

6. Receive the offers.

7. Evaluate offers and make award in accordance with your solicitation evaluation criteria. 

• Document award decision FAR 16.505(b)(7). 

• Award order to successful offeror (must reference OASIS contract number). 

• Provide notice to unsuccessful offerors.

• For orders exceeding $5.5 million, see post-award notice and debriefing procedures in 

FAR 16.505(b)(6).

• Provide completed OASIS Ordering Guide Appendix C and complete copy of task order to 

oasisawards@gsa.gov within five days after task-order award.

• When reporting in FPDS, ensure order references the OASIS contract number.

• A SAM.gov notice of award not required except as detailed in FAR 5.301(a)(2).

8. No protests allowed for orders valued up to $10 million; see FAR 16.505(a)(10)(i)(B)(1).

Use OASIS 8(a)-only Pools for All Orders under the 8(a) Program

Follow 8(a) section of OASIS ordering guide for all 8(a) orders.
Areas of expertise:

• Intelligence • Communication

• Compliance • Security

• Defense • Transportation

• Disaster • Artificial 

• Energy intelligence (AI)

• Research and • Intelligence, 

development (R&D) surveillance, 

reconnaissance • Environment

(ISR) • Health

Digital Tools to Improve Your Acquisitions

Acquisition Gateway: Use this workspace for 

acquisition professionals and federal buyers to 

connect with resources, tools, and each other to 

improve acquisition governmentwide.

Contract-Awarded Labor Category (CALC):

Search awarded ceiling rates for labor categories, 

perform market research on professional services 

labor categories, build IGCEs, and make price 

comparison evaluations.

Steps to Performance-Based Acquisition 

(SPBA): Use this digital platform to walk through 

the eight steps of performance-based acquisition, 

including templates and resources.

For More Information

• Visit www.gsa.gov/oasis.

• For answers to questions about OASIS and OASIS SB, call GSA’s 

National Customer Service Center at 800-488-3111 or email us at 

OASIS@gsa.gov.

• Track OASIS performance on our dashboard at www.gsa.gov/oasis.

www.gsa.gov

November 2022

05-23-00322

View, download, and order publications via www.gsa.gov/cmls.