What Phase III actually is
Phase III is the commercialization phase of the SBIR program. Unlike Phase I and Phase II, Phase III is not itself funded by SBIR dollars. The statute does not appropriate money for Phase III. Instead, Phase III is a contracting authority. It lets any federal agency, any prime contractor using federal funds, or any state or local entity using federal funds award a sole-source contract to an SBIR firm for work that derives from its SBIR-funded technology. The vehicle, the dollar amount, and the period of performance are all set by the awarding authority, not by SBA or by the original SBIR agency.
Three features make Phase III uniquely powerful:
- No dollar ceiling. Phase III contracts routinely range from $500K to $50M+. There is no statutory cap.
- No size limit. A firm that has outgrown small-business thresholds can still receive Phase III awards on its legacy SBIR technology.
- Sole-source authority. Full and open competition is waived. The awarding agency does not have to run a competitive procurement.
This is the closest thing to a guaranteed, non-competitive federal revenue path that exists in procurement law. The catch is that it requires an actual federal sponsor who wants to buy.
The statutory basis
Phase III authority is codified in 15 U.S.C. 638(r). The key provisions:
- Federal agencies "shall give preference, including sole-source awards" to SBIR Phase III follow-on work.
- The sole-source preference extends to work that "derives from, extends, or completes efforts made under prior funding agreements under the SBIR program."
- Agencies other than the original SBIR agency may make the Phase III award.
- Federal prime contractors may subcontract to an SBIR firm under Phase III authority using federal funds.
The SBA SBIR Policy Directive provides implementation guidance. Procurement contracting officers who are unfamiliar with Phase III often require education on this authority; bring the Policy Directive to the conversation.
Phase III vehicles in practice
| Vehicle | Typical size | Who awards | When it fits |
|---|---|---|---|
| Standalone Phase III contract (FAR 15) | $500K-$10M | Any federal agency | Direct program office relationship |
| Phase III task order on existing IDIQ | $100K-$50M | Agency already holding the IDIQ | Prime has existing vehicle |
| Phase III subcontract under a prime | $50K-$5M | Prime contractor | Capability is a component of larger system |
| Phase III on OTA | $500K-$25M | DoD OTA consortium | Rapid prototyping or follow-on production |
| Phase III on SBIR Enhancement (CRP, etc.) | $1M-$5M | Original SBIR agency | Still inside the SBIR agency's pipeline |
| Phase III as GSA Schedule task | varies | Any agency via GSA | Firm holds GSA Schedule with the capability |
Not every agency is equally comfortable using Phase III. DoD components use it heavily. NIH uses it rarely and often prefers re-competing. NSF Phase III is essentially always commercial, not federal. DOE and NASA use it occasionally. When targeting Phase III, the contracting officer's familiarity with SBIR authority is one of the biggest execution risks.
Direct-to-Phase-III paths
Firms can pursue Phase III without going through Phase I and Phase II in the traditional sequence if they can demonstrate that their existing technology derives from SBIR work. Common direct paths:
- Phase III after completed Phase II on the same topic. The default and most common path. No additional SBIR competition required; the firm negotiates directly with the transition sponsor.
- Phase III from a prior firm's SBIR (with IP rights transferred). If a firm acquires SBIR Data Rights from a prior awardee, it can potentially pursue Phase III. Requires careful IP due diligence.
- Phase III on derivative work. A firm that completed Phase II on one topic can sometimes justify Phase III on related work that extends the original technology, even for a different program office.
- Phase III across agencies. A firm that won Phase II from, say, Air Force can be Phase III sole-sourced by Army, Navy, or a civilian agency without new SBIR competition.
What does not qualify as Phase III:
- New capability unrelated to the SBIR technology.
- Commercial off-the-shelf product with no SBIR pedigree.
- Work that predates the Phase I award.
How Phase III gets sold
Phase III does not arrive by itself. Firms that reach Phase III do so by running a deliberate transition process throughout Phase II.
- Identify the end user during Phase I. Not the program office. The actual person who will use the system. Start there.
- Build the program-office relationship during Phase II. Program managers, acquisition leads, contracting officers, and technical directors. Each needs to see the technology and understand what Phase III would buy.
- Write the Phase III statement of work together. Draft the SOW with the sponsor before any formal solicitation. This is legal and common. Phase III is inherently collaborative.
- Secure the sponsor's budget line. A Phase III without a line-item in the sponsor's budget will not move. Start the budget conversation 12 to 18 months before you want the contract to award.
- Identify the contracting officer. The KO (contracting officer) must be comfortable executing Phase III authority. If not, educate them or find another path.
- Negotiate and execute. FAR 15 negotiated procurement with SBIR sole-source justification. Typical timeline from SOW to contract execution is 2 to 6 months.
Data Rights in Phase III
SBIR Data Rights are one of the most valuable intellectual property assets in federal contracting. Under SBIR Data Rights (DFARS 252.227-7018 for DoD, or equivalent), the government receives only limited rights in technical data and restricted rights in software for a Phase III continuation period of up to 20 years from the original SBIR contract start. During that period:
- The government may not release your technical data to competitors.
- The government may not use your data to solicit competitive bids on your technology.
- The government may not compete away Phase III follow-on work during the SBIR Data Rights period.
Firms routinely fail to assert SBIR Data Rights correctly in their Phase I, Phase II, and Phase III deliverables. The assertion has to be on the data itself (markings) and in the contract (assertions table). An unmarked deliverable can lose SBIR Data Rights protection. See our federal AI glossary for more on data rights terminology.
Phase III financial economics
Phase III contracts can be structured under any FAR contract type:
- Firm Fixed Price (FFP): Common for delivery of defined prototypes or integrations.
- Cost-Plus-Fixed-Fee (CPFF): Common for continued development where scope is fluid.
- Time-and-Materials (T&M): Common for sustainment or professional services.
- IDIQ with task orders: Common for multi-year, multi-office relationships.
Phase III allows fee rates that exceed Phase II profit rates. Commercial margins of 10 to 15 percent are not unusual. For firms transitioning from Phase II (~7% fee), Phase III is often the first time the business actually generates significant retained earnings.
Common Phase III failures
- No transition sponsor. The firm won Phase II but never secured a named federal customer. Phase III does not materialize.
- Sponsor has no budget. Relationship exists but the program office cannot fund without a budget cycle.
- Contracting officer unfamiliar with Phase III. KO refuses to execute sole-source without SBA clarification. Fix by bringing the Policy Directive and escalating.
- Phase II prototype not production-ready. Prototype was a science experiment. Phase III sponsor cannot actually field it.
- SBIR Data Rights not asserted. Government's rights in the technology are broader than they should be. Competitors can be invited in.
- Firm grew too large too fast. No penalty on Phase III for size, but other downstream small-business vehicles are lost.
Phase III as the SBIR endgame
The firms that build durable federal businesses out of SBIR are the ones that treat Phase I as a door, Phase II as a prototype, and Phase III as the real contract. The money in SBIR is not in the $200K Phase I or the $1.8M Phase II. The money is in the Phase III that follows. A single Phase III worth $15M over five years dwarfs a decade of Phase I-and-II-only participation. The firms that never reach Phase III end up cycling through feasibility study after feasibility study, paid to think but not to build.
FAQ
Is there a dollar limit on SBIR Phase III awards?
No. Phase III has no statutory ceiling on dollar value, award count, or period of performance. Phase III contracts regularly run from $500K to $50M+.
Can Phase III be awarded sole-source?
Yes. Under 15 U.S.C. 638(r), Phase III awards may be made on a sole-source basis by any federal agency. This is one of the most valuable authorities in federal contracting law.
Who can award a Phase III contract?
Any federal agency (not just the one that funded Phase I or Phase II), any prime contractor using federal funds, and state or local entities using federal funds. Cross-agency Phase III is specifically permitted by statute.
What is a direct-to-Phase-III path?
Firms that completed Phase II may proceed directly to Phase III. Derivative work extending an earlier SBIR technology also qualifies, as does cross-agency Phase III where a new agency sole-sources a capability funded by another agency's SBIR.
How does Phase III differ from a regular federal contract?
Phase III uses SBIR sole-source authority and preserves SBIR Data Rights on the underlying technology. It is still a federal contract subject to FAR, but the usual competition requirement is waived based on SBIR pedigree.
What is TABA and does it apply to Phase III?
TABA applies to Phase I and Phase II. Phase III does not use TABA directly, but business-transition costs, integration support, and scale-up expenses are typically allowable direct costs in the Phase III contract.
Do SBIR Data Rights really last 20 years?
Yes. The SBIR Data Rights protection period is 20 years from the original SBIR contract start date. Firms must mark data and deliverables correctly to preserve the rights. Unmarked deliverables risk losing protection.
Can a large business win Phase III?
Yes, if the firm was once a small-business SBIR awardee. The no-size-limit provision was specifically included so that firms that outgrow the small-business size standard do not lose access to Phase III on their legacy SBIR technology.
Related resources
Planning your Phase III transition?
If your firm is approaching the Phase II-to-Phase III transition and needs help structuring sponsor conversations, drafting statements of work, or navigating SBIR Data Rights, start the conversation.
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