SBIR Phase II Guide for 2026

What Phase II actually funds

Phase II is the prototype stage of the SBIR program. It takes the feasibility results from Phase I and turns them into a working, demonstrable prototype that a federal customer can evaluate for transition into Phase III. The statutory Phase II ceiling in 2026 is $2,095,748 for a standard award. Agencies frequently award between $1.25 million and $2 million, with the exact ceiling set by the solicitation and the proposed scope.

Critically, Phase II is not about inventing something new. It is about proving that what Phase I showed could work does in fact work, at the fidelity required for a federal customer to write a Phase III contract. Firms that expand scope dramatically between Phase I and Phase II usually fail to deliver, which jeopardizes their Phase III and their reputation with the sponsor.

Phase II award ceilings by agency

Do not mistake the base ceiling for the maximum funding available. Sequential Phase II, Phase IIB matching, Phase II-E, and Commercialization Readiness Pilot structures routinely stack additional funds on top of the base, often with matching dollars from a federal customer or private investor.

Phase II proposal structure

Technical volume

Typical Phase II technical volume runs 40 to 50 pages depending on agency. Structure:

1. Identification and significance of the problem. Reprise of the Phase I opportunity, updated with any new understanding gained during Phase I execution.
2. Phase I accomplishments and lessons learned. 3 to 5 pages. Required. Reviewers want evidence that Phase I actually achieved its objectives and produced insights that shape Phase II. Firms that cannot describe their Phase I outcomes precisely lose Phase II.
3. Phase II technical objectives and work plan. 10 to 15 pages. Detailed tasks, schedule, dependencies, risks, and deliverables across 24 months. Include a WBS and Gantt chart.
4. Prototype specification. Exactly what will be built, including functional and non-functional requirements, performance thresholds, and test criteria.
5. Team and facilities. PI and key personnel, resumes, facilities, instrumentation, any subcontractors or consultants. Subcontracting is limited to 50% of award value on Phase II for SBIR (same for STTR).
6. Transition plan. Named federal customer, transition contract vehicle (Phase III, GSA, IDIQ), signed or in-progress memorandum of understanding, specific program office and PM identified.

Cost volume

Phase II cost volumes are scrutinized more heavily than Phase I. At $2 million, the contracting officer will want DCAA-compliant accounting, validated indirect rates, and clear subcontractor pass-through treatment. Budget 2 to 3 weeks to prepare a Phase II cost volume properly. Include:

• Direct labor by labor category, with loaded rates and hours per task.
• Fringe benefits calculation supported by actuals.
• Overhead pool allocation with a documented indirect rate methodology.
• Materials and equipment with quotes for any item over $5,000.
• Travel itemized by trip with purpose, cities, and per-diem.
• Subcontractor cost breakdowns in the same level of detail as primary costs.
• G&A, fee, and total.

Commercialization plan

The commercialization plan is weighted heavily in Phase II scoring. Typical structure (15 to 20 pages for a strong plan):

1. Market opportunity. Defense, intelligence, civilian, and commercial markets. TAM/SAM/SOM with sources.
2. Federal transition path. Specific program of record, platform, or mission area. Named customer with title. Identified contract vehicle. Estimated Phase III procurement window and dollar amount.
3. Commercial transition path. Non-federal customers, business model, pricing, sales strategy.
4. Competitive landscape. Existing solutions, competing Phase II winners, adjacent commercial products.
5. Intellectual property position. SBIR Data Rights assertion, any patents filed or pending, trade secrets.
6. Financing plan. Use of SBIR proceeds, any matching or non-dilutive funding, any private investment.
7. Business and executive team. Leadership, commercialization experience, any advisors or board members.

Letters of support and endorsements

Phase II proposals with strong sponsor support letters from the Phase III customer dramatically outperform those without. A letter from a named program office, signed by a GS-14 or above, stating specific interest in transitioning Phase II results into Phase III, carries meaningful weight. Begin soliciting letters at the midpoint of Phase I, not in the week before the Phase II deadline.

Strategic Breakthrough Phase II and agency variants

DoD runs several Phase II variants designed for high-priority technology:

• Strategic Breakthrough Phase II. Higher ceilings (often $3M to $4M) for selected topics, requiring a DoD acquisition sponsor and matching funds. Component-specific.
• Commercialization Readiness Program (CRP) / CRP Phase II. DoD program funding firms that have completed Phase II to reach transition.
• Navy Phase II.5. Bridging award between Phase II and Phase III, typically $500K to $1M, designed to keep the prototype alive while the transition customer is lining up Phase III funds.
• DoD CMF (Commercialization Match Funding). Matching structure where private or program-office funds unlock additional SBIR dollars.
• Sequential Phase II (a.k.a. Phase IIB). NSF, NIH, and others offer additional Phase II funding when firms demonstrate progress and secure matching or third-party investment.
• NASA CCRPP. Civilian Commercialization Readiness Pilot Program. Post-Phase II funding to transition NASA SBIR technology into missions.

The common theme across variants: an acquisition or program sponsor who wants the technology bad enough to write a check (cash or matching) unlocks more federal investment. Firms without a sponsor max out at base Phase II.

TABA: Technical and Business Assistance

Most SBIR agencies allow firms to request Technical and Business Assistance (TABA) funding on top of the Phase II award. Statutory cap in 2026 is $50,000 per Phase I and up to $50,000 per year on Phase II (for a total of up to $100,000 for a standard 24-month Phase II). TABA covers vendor-provided services in areas like:

• Commercialization strategy consulting.
• Intellectual property counsel and patent prosecution.
• Regulatory strategy (FDA, FAA, etc.).
• Federal business development coaching.
• DCAA accounting system setup and audit preparation.
• Manufacturing readiness assistance.

TABA dollars are in addition to the award ceiling. Firms routinely underuse TABA. On a $2M Phase II, $100K of TABA can be the difference between a prototype that sits on a shelf and a prototype that reaches Phase III with DCAA-compliant accounting and an IP portfolio.

Scoring and evaluation

Phase II evaluation uses the same statutory criteria as Phase I (technical merit, team, commercial potential) with heavier weighting on commercial potential and transition. Most agencies add specific sub-criteria:

• Quality of Phase I execution and results.
• Specificity and credibility of the transition plan.
• Named transition partner and signed endorsements.
• Depth of commercialization plan.
• Realism of budget and schedule.
• Capability of team to scale from feasibility to prototype.

DoD uses its Company Commercialization Report (CCR) as a significant input. Firms with a strong track record of prior Phase II commercialization receive measurable preference. First-time Phase II winners are not penalized but do not have this advantage.

Executing Phase II

Twenty-four months is a long time. The firms that finish Phase II in strong shape for Phase III typically follow a month-by-month rhythm:

1. Month 1-3: Kickoff, team ramp, architecture. Kickoff with TPOC, contracting officer, and sponsor. Hire or activate any key personnel. Lock architecture decisions.
2. Month 4-9: Build core prototype. Deliver the first demonstrable system. Agency-specific gate review at month 6 or 9 is common.
3. Month 10-15: Customer demos and iteration. Put the prototype in front of the transition customer. Incorporate feedback. Validate fidelity claims.
4. Month 16-20: Transition readiness. Begin Phase III contract conversations with sponsor. Scope the Phase III effort. Align with acquisition cycle.
5. Month 21-24: Close out. Final prototype demonstration, final report, handoff. Phase III should already be in motion: a signed Phase III contract, an OTA, a task order, or a funded matching commitment.

The biggest failure mode in Phase II execution is waiting until month 20 to have the Phase III conversation. By that point, the sponsor has planned its budget and there is no room. Start Phase III conversations in month 12, not month 20.

Phase II cost economics for a small firm

A $1.8M Phase II over 24 months, executed by a firm with one founder PI and two engineers, typically breaks down:

• Direct labor: ~$900K. PI at 50% level of effort, two engineers full-time, some consultants.
• Fringe: ~$135K at 15%.
• Overhead: ~$350K at 35% of loaded direct labor.
• Materials, cloud, licenses, travel: ~$100K.
• Subcontracts/consultants: ~$150K (max 50% of total).
• G&A: ~$90K at 10% of the subtotal.
• Fee: ~$75K at approximately 7%.

The practical effect is that $1.8M funds roughly a three-person team for 24 months with modest overhead. Phase IIB matching or Strategic Breakthrough can double this.

The Phase III cliff

The single most dangerous moment in the SBIR lifecycle is the gap between Phase II close and Phase III contract start. This is the "valley of death" federal program literature talks about. Firms hit the cliff for one of three reasons:

1. No identified Phase III sponsor.
2. Sponsor exists but has no funds in the relevant budget year.
3. Sponsor has funds but no contract vehicle in place to move them.

Each of these is solvable with lead time. None is solvable in the last month of Phase II. See our Phase III guide for the full transition playbook.

FAQ

How much is an SBIR Phase II award?

Standard Phase II awards in 2026 are up to $2,095,748 under the statutory ceiling. Many agencies award $1.25M to $2M base. Strategic Breakthrough, Phase IIB matching, and Sequential Phase II can stack additional funds.

How long is the Phase II period of performance?

Standard Phase II runs 24 months. Some agencies structure 18 to 30 months. Phase IIB or sequential awards extend the total engagement well beyond two years.

What is Strategic Breakthrough Phase II?

Strategic Breakthrough is DoD's high-priority Phase II pathway. Higher ceilings (commonly $3M to $4M), acquisition-sponsor requirement, and matching structures. Available only on specific topics designated by the component.

Who is eligible for Phase II?

Phase II is typically restricted to firms that successfully completed Phase I on the same topic. Some agencies allow Direct-to-Phase-II (D2P2) if the firm demonstrates Phase-I-equivalent work at its own expense. DoD Open Topic D2P2 is the most active path.

What is the Phase II win rate?

Phase II selection rates run 30 to 60 percent of Phase II-eligible proposals across DoD components, higher than Phase I because competition is narrower (mostly Phase I winners on that topic). NSF and NIH Phase II rates run 40 to 55 percent.

Can I receive more than one Phase II?

Yes. Sequential Phase II (a.k.a. Phase IIB or Phase II Enhancement) adds funding on top of the original Phase II, often with matching non-SBIR funds. This is how firms scale a single Phase II into $3M to $5M of total federal investment.

What is TABA and how much can I request?

Technical and Business Assistance. Up to $50,000 per Phase I and $50,000 per year on Phase II (up to $100,000 total on a 24-month Phase II). Covers commercialization consulting, IP counsel, regulatory strategy, DCAA accounting setup, manufacturing readiness, and similar services from approved vendors.

Is Phase II more competitive than Phase I?

Selection rates are higher, but proposal quality requirements are stricter. The evaluator's bar for Phase II is "will this become a real product or program capability?" Phase II proposals that read like extended Phase I feasibility studies do not win.

Related resources

• SBIR-Ready Checklist
• SBIR Phase I Guide
• SBIR Phase III Guide
• STTR vs SBIR
• SBIR Partnering