Government Grants for Defense Tech Startups: Every Pathway into DoD Funding

DoD is the largest SBIR funder in the federal government -- over $2.3 billion annually across Air Force, Navy, Army, DARPA, and a dozen smaller components. But SBIR is just the entry point. The real funding ladder for defense tech startups runs from Phase I ($75K-$250K) through Phase II ($1M-$1.8M), STRATFI ($3M-$15M), and into Phase III production contracts with no funding ceiling.

And SBIR isn't the only path in. DIU awards prototype agreements in 60-90 days. DARPA funds breakthrough concepts at $500K-$10M+. OTA contracts bypass traditional procurement entirely. The defense funding landscape offers more on-ramps for startups than most founders realize.

This guide maps every major pathway, explains how they connect, and tells you where to start.

Why DoD funding works differently

Before diving into programs, understand three things that make DoD fundamentally different from NSF, NIH, or DOE:

1. DoD is a customer, not a funder. NSF funds promising science. NIH funds promising health research. DoD funds things it wants to buy. Every SBIR topic is tied to a specific military need. Your Phase I isn't just an R&D grant -- it's the first step in a procurement relationship. The agencies that move you forward are the ones that see a path to fielding your technology.

2. Topics, not open calls. Most DoD SBIR components publish specific topics describing exactly what they want. You match your technology to their need, not the other way around. The exception is AFWERX, which uses an open topic model where you define the problem. Understanding this distinction shapes your entire application strategy.

3. Phase III is the prize. Phases I and II are small by defense standards. Phase III is a sole-source production contract with no funding ceiling and no competition required. The company that wins Phase I and proves feasibility has a direct path to becoming a defense supplier. This is why DoD SBIR is worth the complexity.

DoD SBIR by component

Every DoD component runs its own SBIR program with its own award amounts, timelines, and evaluation culture. All solicitations are published through DSIP (dodsbirsttr.mil), the centralized DoD submission portal.

AFWERX (Air Force) -- the startup on-ramp

AFWERX is the most startup-friendly DoD SBIR entry point. It's the only major component that uses an open topic model -- you propose your own solution rather than responding to a government-defined topic.

Why start here: AFWERX's open topic model means you don't wait for a matching solicitation. The Phase I is 3 months and $75K -- designed as customer discovery, not heavy R&D. If you get traction with an Air Force end user, the funding ladder is clear: Phase I → Phase II → STRATFI → Phase III.

The critical deliverable in Phase I isn't a technical report -- it's a Customer Memorandum from a military end user confirming interest in your technology. This customer validation drives Phase II selection more than technical merit alone.

For a deep dive on AFWERX mechanics, see our AFWERX SBIR guide.

Navy SBIR

Navy publishes topic-specific solicitations covering shipboard systems, undersea technology, aviation, cybersecurity, energy, and logistics.

Navy Phase I is among the largest in DoD and includes an option period that lets you extend feasibility work before committing to Phase II. The Navy is investing heavily in autonomous systems, undersea warfare, and shipboard energy, making it a strong fit for robotics, AI, and power systems companies.

Army SBIR

Army topics flow through ASA(ALT) and Army Futures Command, covering everything from soldier systems to next-gen vehicles to AI-enabled logistics.

Army also runs xTech competitions -- pitch-style events with prize money and a direct pipeline to SBIR awards. xTechSBIR CleanTech specifically targets energy and sustainability technologies for military applications. Winners get fast-tracked into Phase I or Direct-to-Phase II.

Other DoD components

DHA (Defense Health Agency) is often overlooked but runs a significant SBIR program for health-tech startups. If your technology touches military medicine, telehealth, medical readiness, or soldier health monitoring, DHA is worth targeting alongside NIH.

SOCOM is worth noting for startups building tactical equipment -- it's a sophisticated, fast-moving customer. DLA's Phase I is the smallest in DoD ($100K) but covers a niche most startups overlook: defense supply chain innovation.

What wins at each component

Evaluation culture varies significantly across DoD. Knowing what each component prioritizes helps you frame proposals:

• AFWERX: Customer validation is everything. A strong Customer Memorandum from an end user matters more than technical novelty. Frame your proposal around the operational problem you're solving, not the technology itself.
• Navy: Technical depth and a clear transition plan. Navy reviewers want to see rigorous engineering and a realistic path from prototype to fleet deployment. Strong technical writing matters here.
• Army: Alignment with Cross-Functional Team (CFT) priorities and Army Futures Command modernization goals. Match your technology to a specific Army priority area (long-range precision fires, next-gen combat vehicles, soldier lethality, etc.).
• DARPA: Technical surprise and world-class team. DARPA Program Managers look for ideas that could fundamentally change what's possible, not incremental improvements. Your team's expertise and prior work matter as much as the proposal itself.
• DIU: Commercial traction. DIU evaluates existing products, not R&D proposals. Customer counts, deployment history, and production readiness carry more weight than academic credentials.

Beyond SBIR: non-traditional pathways

DARPA BAAs -- the breakthrough tier

DARPA funds transformative defense technology through Broad Agency Announcements (BAAs) at $500K-$10M+ per project. The bar is high: DARPA wants technologies that are 10x better, not 10% better.

Each of DARPA's six technical offices issues Office-Wide BAAs with rolling deadlines (typically 12+ months open). You submit a brief abstract or white paper first. If a Program Manager is interested, you'll be invited to submit a full proposal.

Key details for startups:

• Security clearance NOT required at proposal stage
• Simplified acquisition procedures for proposals under $2M (faster processing, though timelines vary)
• DARPA runs DARPAConnect (curriculum and coaching for new performers) and the Embedded Entrepreneur Initiative
• Current priority areas: AI/autonomy, microelectronics, quantum, hypersonics, advanced materials, biotech

For the full DARPA playbook, see our DARPA BAA guide for startups.

DIU -- commercial tech for defense

DIU (Defense Innovation Unit) is the fastest path to defense funding if you already have a working commercial product. DIU doesn't fund R&D -- it prototypes existing technologies for military use.

DIU's 6 portfolios: AI/ML, Autonomy, Cyber, Human Systems, Energy, Space.

The key difference: DIU wants technologies that already work in a commercial context. If you're pre-revenue with a lab prototype, SBIR is the right path. If you have a product with commercial customers and a defense application, DIU can move faster and pay more than SBIR Phase I.

Eligibility: At least one nontraditional defense contractor or small business must participate significantly, or one-third of project costs must come from non-government sources.

OTAs (Other Transaction Authorities)

OTAs are the government's "startup-friendly" contracting vehicle. They bypass the Federal Acquisition Regulation (FAR), which means less compliance overhead, faster timelines (3-6 months vs. 12-18 for traditional contracts), and structures that look more like commercial agreements.

Who uses OTAs: DIU, AFWERX, Army Applications Lab, NavalX, SOCOM, CDAO, and many other DoD innovation offices. The current administration is pushing to mandate OTA use whenever feasible.

Typical sizes: $1M-$50M for prototype agreements. Average across DoD is approximately $3M. Production OTAs (follow-on to successful prototypes) can reach hundreds of millions.

Why this matters for startups: The FY2025 NDAA clarified that successful prototype OTs can transition to production without new competition. This means winning a prototype OTA can lead directly to a production contract -- similar to SBIR Phase III's sole-source pathway.

The defense funding ladder

The programs above aren't alternatives -- they're a progression. The typical path for a defense tech startup:

SBIR Phase I ($75K-$250K, 3-6 months)
    ↓ Prove feasibility, build military customer relationship
SBIR Phase II ($1M-$1.8M, 12-24 months)
    ↓ Develop prototype, demonstrate with end users
STRATFI/TACFI ($375K-$15M) or Strategic Breakthrough Awards (up to $30M)
    ↓ Bridge to production readiness
Phase III (sole-source production contract, no ceiling)

DARPA and DIU offer parallel on-ramps at different stages:

• DARPA BAA → if your technology is genuinely breakthrough and you want larger R&D funding
• DIU OTA → if you already have a commercial product ready for defense prototyping

Companies can and do pursue multiple pathways simultaneously. An AFWERX Phase I, a Navy SBIR Phase I on a different topic, and a DIU CSO submission can all be in flight at the same time.

STRATFI and TACFI: bridging the Valley of Death

STRATFI (Strategic Funding Increase) and TACFI (Tactical Funding Increase) are AFWERX programs that bridge the gap between Phase II completion and production contracts. This is where many defense tech startups stall -- the technology works, but there's no funding to scale it.

STRATFI:

• Award size: $3M-$15M (up to $60M total when combined with SpaceWERX and other agency contributions)
• Duration: Up to 48 months
• Prerequisite: Existing AFWERX or SpaceWERX Phase II award
• Critical requirement: STRATFI typically requires matching private capital investment. You'll need to demonstrate that investors are willing to co-invest alongside the government. This is a serious gating factor for early-stage companies.
• Submission: Rolling basis (check AFWERX for current open windows)

TACFI:

• Award size: $375K-$2M
• Purpose: Rapid tactical innovation -- faster and smaller than STRATFI
• Same prerequisite: Existing AFWERX/SpaceWERX Phase II

Key insight: STRATFI isn't just "more money after Phase II." It's a fundamentally different relationship where you're demonstrating production readiness with skin in the game from private investors. Start socializing with investors about a potential STRATFI match during your Phase II, not after.

Strategic Breakthrough Awards (new in 2026)

The 2026 SBIR reauthorization created a new post-Phase II pathway: Strategic Breakthrough Awards of up to $30M over 48 months. These are designed for companies scaling SBIR-funded technology toward production.

Requirements:

• Prior Phase II SBIR/STTR completion
• 100% matching from private capital or qualifying government sources
• Only available through agencies with over $100M in annual SBIR obligations (DoD qualifies)

Implementation details are still being finalized, but for Series A defense tech companies with existing Phase II track records, this could become the most significant scaling mechanism in the SBIR ecosystem.

The Phase III reality

The guide presents Phase III as a natural next step, and structurally it is -- sole-source, no competition, no ceiling. But in practice, Phase III awards don't happen automatically. They require active internal champions at the program office.

What actually drives Phase III conversion:

• PEO/PM relationships. The Program Executive Office (PEO) and Program Manager (PM) at the component that funded your Phase II are your most important stakeholders. They're the ones who initiate a Phase III contract. If they don't champion your technology internally, Phase III won't happen -- regardless of how well Phase II went.
• End-user pull. Operators in the field requesting your technology creates demand signal that program offices can't ignore. This is why AFWERX emphasizes Customer Memorandums early.
• Budget alignment. Phase III contracts come from the component's procurement budget, not SBIR set-aside funds. Your champion needs to find budget within their program to buy your technology.

The practical advice: Start building your program office relationship during Phase I. By Phase II, you should know your PEO/PM by name, understand their acquisition timeline, and be actively working toward a formal requirement document that justifies Phase III procurement.

Positioning dual-use technology for defense

If your technology was built for commercial use and you're exploring defense applications, how you frame it matters as much as what it does.

The dual-use pitch formula:

1. Lead with the defense problem, not the commercial product. DoD evaluators care about their mission needs. "Our warehouse CV system detects anomalies in real-time" is a commercial pitch. "Our anomaly detection system provides persistent base security monitoring with 95% fewer false positives than current COTS solutions" is a defense pitch. Same technology, different frame.

2. Map to a specific operational gap. Generic "this could help the military" proposals lose. Identify the specific unit, mission, or capability gap your technology addresses. AFWERX open topics let you define this yourself. For topic-based programs, align your solution directly to the stated requirement.

3. Show the transition path. Reviewers want to know how a commercial product becomes a fielded defense capability. Address integration with existing military systems, ruggedization requirements, data security (FedRAMP, IL4/IL5 for cloud), and support/maintenance at scale.

4. Leverage commercial traction as proof. Commercial customers, revenue, and deployment data aren't just nice-to-have -- they're evidence that the technology works. DoD reviewers heavily discount lab-only prototypes. Production deployments are the strongest possible proof point.

Foreign nationals and international teams

Many dual-use startups have non-US co-founders, engineers on work visas, or foreign investors. This doesn't automatically disqualify you from DoD SBIR, but it requires careful planning.

What's generally fine:

• Non-US employees can work on unclassified SBIR Phase I and Phase II projects, as long as ITAR-controlled technical data isn't shared with them
• Many AFWERX open topics and standard DoD SBIR topics are unclassified and not ITAR-restricted
• Foreign-born US permanent residents (green card holders) face fewer restrictions than visa holders

What creates complications:

• If a non-US person needs access to ITAR-controlled technical data, you'll need a Technology Assistance Agreement (TAA) or an export license from the State Department
• Foreign ownership above certain thresholds triggers FOCI review during facility clearance processing, which can add months or block clearance entirely
• Some DoD components or specific topics explicitly require US citizenship for all key personnel -- read the solicitation carefully

The practical path: Start with unclassified, non-ITAR topics (AFWERX open topic is usually a safe bet). Build past performance and DoD relationships. As you move into classified or ITAR-controlled work at Phase II/III, address clearance and ITAR compliance with the sponsoring agency. Many successful defense tech companies have non-US team members -- the key is structuring access controls and agreements correctly from the start.

First-time DoD applicant checklist

If you've never worked with DoD, complete these steps before your first submission:

1. Get a UEI (Unique Entity Identifier) from SAM.gov -- this replaces the old DUNS number. Takes 1-2 days.
2. Register on SAM.gov -- required for any federal award. Allow 2-4 weeks for processing. Start this immediately.
3. Create a DSIP account -- the DoD SBIR/STTR submission portal. Registration is straightforward but you need your UEI.
4. Register in the SBA Company Registry -- confirms your small business status for all SBIR programs.
5. Self-assess ITAR exposure -- review the US Munitions List categories. If your technology is potentially USML-controlled, start ITAR registration (takes weeks).
6. Identify your target component and topic -- browse DSIP for open solicitations, or start with AFWERX open topic if nothing matches.
7. Budget 4-6 weeks for a Phase I proposal -- AFWERX proposals are shorter (pitch format, ~10 pages). Navy and Army proposals are longer and more technical (~25 pages).

Where to start

Security, ITAR, and clearances

You don't need a clearance to start

Most SBIR Phase I topics are unclassified. You don't need a facility clearance (FCL) or personal clearances to submit proposals or win Phase I awards. Clearances become relevant at Phase II or III when work may involve classified data.

The standard path:

1. Win unclassified SBIR Phase I/II awards to build past performance
2. When classified work becomes relevant, the awarding agency sponsors your FCL
3. Use DARPA TurboFCL (free through December 2026) to navigate the clearance process

Timeline reality: Even with TurboFCL, expect 6-12+ months for initial FCL processing through DCSA.

ITAR: know before you apply

Many DoD SBIR topics involve ITAR-controlled technologies. If your technology touches items on the US Munitions List, you need ITAR registration before pursuing those topics. Registration takes weeks, not days.

Key rules:

• ITAR restrictions apply based on the technology, not the contract type
• Non-US employees or investors with technical access create compliance exposure
• Even unfunded R&D that develops USML-covered tech can trigger obligations

For startups with foreign co-founders or investors: Foreign ownership can trigger FOCI (Foreign Ownership, Control, or Influence) reviews that delay or block facility clearances. Structure your cap table carefully if defense work is part of your strategy. Consult an ITAR attorney before your first defense application.

Where to start

If you're new to defense: Start with AFWERX open topic. It's the lowest-friction DoD entry point -- you define the problem, decisions take ~90 days, and the 3-month Phase I is designed as customer discovery. Even if your technology ultimately fits a different component, AFWERX teaches you how DoD thinks.

If your tech maps to a specific DoD need: Browse DSIP for open solicitations across all components. Match your technology to a published topic. Navy and Army publish the most topics per cycle.

If you have a working commercial product: Look at DIU's open CSOs first. If your product solves a defense problem and already works commercially, DIU's prototype OTA is faster and larger than SBIR Phase I.

If you're building breakthrough technology: Read our DARPA BAA guide. DARPA's rolling BAAs accept proposals year-round, and the funding scale ($500K-$10M+) matches the ambition.

If you want a personalized assessment: We map defense tech startups to the best-fit components and pathways across DoD. Book a strategy review and we'll tell you which programs match your technology, where you're most competitive, and what order to apply in.

For a broader view of SBIR across all sectors, see our complete SBIR guide. For how different agencies score proposals, see how SBIR applications are scored.