The Short Answer

OASIS+ base period of performance: 5 years (June 2024 -- June 2029)

Option period: One 5-year option (June 2029 -- June 2034)

Maximum total period: 10 years through 2034

Task order period: Individual task orders can extend up to 5 years beyond the contract's ordering period, meaning task orders placed near the end of the option period could run as late as 2039.

What Is OASIS+?

OASIS+ (One Acquisition Solution for Integrated Services Plus) is a government-wide, multi-award, indefinite-delivery/indefinite-quantity (MA-IDIQ) contract vehicle managed by the General Services Administration (GSA). It is the successor to the original OASIS contracts awarded in 2014.

In plain English: OASIS+ is a pre-competed pool of qualified service providers. Any federal agency can use OASIS+ to buy complex professional services without running their own full-and-open competition from scratch.

Why OASIS+ Matters

| Metric | Value |

|--------|-------|

| Estimated ceiling | **Unlimited** (no aggregate ceiling) |

| Original OASIS spend (2014-2024) | ~$80 billion |

| Projected OASIS+ spend (2024-2034) | $100+ billion |

| Number of contract holders | ~3,700 across all pools |

| Agencies using OASIS | 70+ federal agencies |

| Task order sizes | $100K to $1B+ |

OASIS+ is the largest professional services contract vehicle in the federal government. It replaced the original OASIS and OASIS Small Business contracts, which together processed over $80 billion in task orders during their 10-year run.

OASIS+ Period of Performance -- Detailed Breakdown

Contract-Level Timeline

| Milestone | Date |

|-----------|------|

| Solicitation released | August 2023 |

| Proposals due | Multiple deadlines by domain (Oct-Dec 2023) |

| Awards began | January 2024 (rolling through mid-2024) |

| **Base period start** | **June 30, 2024** |

| **Base period end** | **June 29, 2029** |

| **Option period start** | **June 30, 2029** (if exercised by GSA) |

| **Option period end** | **June 29, 2034** |

| Last possible task order issuance | June 29, 2034 |

| Last possible task order completion | Up to **June 29, 2039** |

Task Order-Level Timelines

Individual task orders placed under OASIS+ have their own periods of performance, subject to these rules:

**Task orders must be issued** during the contract's ordering period (base or option)

**Task order performance** can extend up to 5 years beyond the end of the ordering period

**Task order options** can extend performance, but total task order PoP cannot exceed the 5-year extension limit

**No new task orders** can be issued after the ordering period ends

Example: A task order issued on June 1, 2034 (near the end of the option period) could have a performance period extending to June 1, 2039.

Comparison to Original OASIS

| Feature | Original OASIS (2014) | OASIS+ (2024) |

|---------|----------------------|---------------|

| Base period | 5 years | 5 years |

| Option periods | One 5-year option | One 5-year option |

| Maximum duration | 10 years (2014-2024) | 10 years (2024-2034) |

| Task order extension | 5 years beyond ordering | 5 years beyond ordering |

| Latest task order completion | ~2029 | ~2039 |

OASIS+ Structure: Domains and Pools

OASIS+ is organized into service domains (broad categories of work) and pools (competition groups based on business size and socioeconomic status).

The 8 Service Domains

| Domain | Description | Key NAICS Codes |

|--------|-------------|-----------------|

| Management & Advisory | Consulting, program management, strategic planning | 541611, 541612, 541618 |

| Technical & Engineering | Engineering services, R&D, scientific consulting | 541330, 541715, 541720 |

| Scientific | Research, lab services, environmental science | 541380, 541620, 541690 |

| Intelligence Services | Analysis, collection management, counterintelligence | 541990 |

| Enterprise Solutions | IT consulting, digital transformation, systems integration | 541512, 541513, 541519 |

| Environmental | Remediation, compliance, environmental management | 562910, 562211, 541620 |

| Facilities | Facility management, O&M, logistics support | 561210, 561720, 488190 |

| Logistics | Supply chain, warehousing, transportation management | 541614, 493110, 488510 |

The Pools (Competition Groups)

Each domain has multiple pools based on business size:

| Pool | Description | Approximate Holders per Domain |

|------|-------------|-------------------------------|

| Unrestricted | Open to all businesses | 300-800 |

| Small Business (SB) | Total small business set-aside | 200-500 |

| 8(a) | 8(a) certified businesses | 50-150 |

| HUBZone | HUBZone certified | 30-80 |

| SDVOSB | Service-Disabled Veteran-Owned | 50-150 |

| WOSB | Women-Owned Small Business | 50-120 |

Total contract holders across all domains and pools: ~3,700 companies

How Task Orders Work on OASIS+

The Ordering Process

**Agency identifies need** for professional services

**Agency selects OASIS+** as the contract vehicle (Contracting Officer decision)

**Agency posts task order solicitation** to OASIS+ contract holders in the relevant domain/pool

**Contract holders submit proposals** (technical approach + pricing)

**Agency evaluates and awards** to the best-value offeror

**Work begins** under the task order, managed by the ordering agency (not GSA)

Task Order Evaluation Methods

Agencies can use any of these approaches:

**Best Value Tradeoff** -- Weighs technical quality against price (most common for complex work)

**Lowest Price Technically Acceptable (LPTA)** -- Cheapest proposal that meets minimum requirements

**Highest Technically Rated with Fair and Reasonable Price** -- Best technical proposal at a reasonable price

**Direct Award** -- Sole-source to a specific OASIS+ holder (requires justification)

Task Order Size Distribution (Based on Original OASIS Data)

| Size Range | % of Task Orders | % of Dollars |

|------------|-----------------|-------------|

| Under $500K | 45% | 3% |

| $500K - $5M | 30% | 12% |

| $5M - $50M | 18% | 35% |

| $50M - $500M | 6% | 38% |

| Over $500M | 1% | 12% |

The bulk of the dollars flow through mid-to-large task orders ($5M-$500M), but the majority of individual opportunities are in the under-$5M range -- accessible to small and mid-size firms.

Top Agencies Using OASIS+

Based on original OASIS ordering patterns (expected to continue on OASIS+):

| Agency | Est. Annual OASIS Spend | Primary Domains |

|--------|------------------------|-----------------|

| Department of Defense | ~$3.5 billion | Technical & Engineering, Intelligence, Logistics |

| Department of Homeland Security | ~$1.8 billion | Management & Advisory, Enterprise Solutions |

| Department of Health & Human Services | ~$1.2 billion | Management & Advisory, Scientific |

| Department of Veterans Affairs | ~$900 million | Enterprise Solutions, Facilities |

| Department of Energy | ~$800 million | Technical & Engineering, Environmental |

| NASA | ~$700 million | Scientific, Technical & Engineering |

| Department of Justice | ~$600 million | Management & Advisory, Intelligence |

| All others | ~$2.5 billion | Various |

How to Win Task Orders on OASIS+

If You Are Already an OASIS+ Holder

**Monitor the OASIS+ task order portal** -- GSA's Symphony Procurement Suite is the primary posting location for OASIS+ opportunities

**Watch SAM.gov** -- Some agencies cross-post OASIS+ opportunities

**Track agency forecasts** -- Many agencies publish their planned OASIS+ procurements in advance

**Build agency relationships** -- The contracting officer chooses which vehicle to use. If they know you and your capabilities, they are more likely to use OASIS+ for their requirement

If You Are Not an OASIS+ Holder

On-ramp opportunities: GSA has indicated they will conduct periodic on-ramps to allow new companies to join OASIS+. These are expected every 1-2 years, but timing is at GSA's discretion.

Subcontracting: Many OASIS+ prime contractors need subcontractors. If you have specialized skills, teaming with an OASIS+ holder is the fastest path to OASIS+ revenue.

Alternative vehicles: If OASIS+ is not accessible, consider:

GSA Schedule (open enrollment, no ceiling on holders)

Agency-specific IDIQs (DOD has many)

Alliant 2, STARS III (IT-focused GWACs)

Direct full-and-open competition (always available)

Key Win Factors

**Domain expertise** -- Task orders are highly specific. Generic proposals lose. Demonstrate deep knowledge of the agency's mission and the specific work required.

**Key personnel** -- Named staff with relevant clearances, certifications, and past performance on similar work. Agencies buy people, not companies.

**Past performance** -- Relevant task order experience, especially under OASIS or similar IDIQ vehicles. CPARS ratings matter.

**Competitive pricing** -- OASIS+ is a competitive vehicle. You are bidding against hundreds of qualified firms. Price must be sharp.

**Small business utilization** -- For unrestricted task orders, a strong small business subcontracting plan can differentiate your proposal.

OASIS+ vs. Other Major Contract Vehicles

|---------|--------|-------------|-----------|----------|

| Holders | ~3,700 | ~30,000 | 61 | 505 |

The Bottom Line

OASIS+ is a 10-year, unlimited-ceiling vehicle that will process an estimated $100+ billion in professional services task orders through 2034 (with task order performance extending to 2039).

If your company provides professional services to the federal government -- consulting, engineering, IT, scientific research, facilities, logistics, environmental, or intelligence services -- OASIS+ is where the largest, most complex task orders live.

The data on who wins OASIS+ task orders, at what prices, in which domains, and from which agencies is available in the federal procurement record. Use it to find your competitive position.

[Search OASIS+ task orders →](/search)