Key Takeaways
- • Venture capital investment in European defence startups reached $1.5 billion in 2025, establishing a new record for the region, with VC funding in the defence, security, and resilience (DSR) sector marking a 30% uplift and representing the strongest growth among all VC segments.
- • NATO's 2025 Summit commitment to increase annual defence spending to 5% of GDP—comprising 3.5% for traditional defence and security plus 1.5% for resilience initiatives—is expected to drive capital deployment to early-stage innovative companies, dual-use startups, and SMEs across the Alliance.
- • Structural barriers persist in mobilizing sufficient private capital for European defence startups despite the funding surge, with key obstacles including financing restrictions, regulatory fragmentation across jurisdictions, lack of specialized expertise, and elevated risk profiles of DSR-focused companies.
- • VC funding in the DSR sector has surged to $5.2 billion in 2024 (pre-2025 record), accelerated by Russia's invasion of Ukraine; however, capital stack challenges intensify as companies scale from early stage to industrial deployment.
- • Integration of startup-led innovation into national defence industrial bases is strategically critical, as nations failing to operationalize breakthrough defence technologies risk competitive disadvantage in next-generation warfare capabilities.
Summary
European venture capital is flowing into defence technology at unprecedented levels, yet persistent structural barriers continue to constrain capital efficiency and startup scalability across the region. According to research conducted in partnership with Dealroom, venture capital investment in European defence startups reached $1.5 billion in 2025, marking a historic high for the sector. This surge reflects a broader 30% uplift in VC funding for defence, security, and resilience (DSR) investments—the strongest growth rate among all VC segments. The acceleration follows Russia's invasion of Ukraine, which catalyzed geopolitical reassessment and increased national defence spending commitments.
The capital influx was substantially reinforced by NATO's historic 2025 Summit, where alliance leaders committed to increase annual defence spending to 5% of GDP, with 3.5% allocated to traditional defence and security and an additional 1.5% dedicated to resilience infrastructure, network protection, civil preparedness, and innovation within the defence industrial base. This policy shift explicitly positions early-stage innovative companies, dual-use startups, and small-to-medium enterprises (SMEs) as critical components of future Allied capability development. However, research identifies multiple structural impediments limiting the effectiveness of this capital deployment.
Key barriers identified include financing restrictions that constrain private capital mobilization domestically, fragmented regulatory requirements across EU member states, scarcity of specialized expertise in defence venture capital, and the elevated risk profiles inherent to DSR-focused companies. These obstacles are particularly acute as companies transition from seed and Series A funding into growth and industrial-scale deployment phases. The challenge is not merely attracting capital at the earliest stages—where VC funding has become increasingly plentiful—but rather ensuring frictionless capital flow through the entire maturation pipeline so that innovative solutions can be deployed at scale across the Alliance.
For NATO's 5% defence spending commitment to generate meaningful economic growth and strengthen national security architecture, institutional investors and venture capital firms must successfully navigate regulatory harmonization, build sector-specific expertise, and establish investment theses capable of bridging the gap between innovative startup development and traditional defence primes. Nations that fail to integrate startup-led innovation effectively risk falling behind in next-generation warfare capabilities, making the resolution of capital mobilization barriers a strategic imperative for European defence competitiveness.
The capital influx was substantially reinforced by NATO's historic 2025 Summit, where alliance leaders committed to increase annual defence spending to 5% of GDP, with 3.5% allocated to traditional defence and security and an additional 1.5% dedicated to resilience infrastructure, network protection, civil preparedness, and innovation within the defence industrial base. This policy shift explicitly positions early-stage innovative companies, dual-use startups, and small-to-medium enterprises (SMEs) as critical components of future Allied capability development. However, research identifies multiple structural impediments limiting the effectiveness of this capital deployment.
Key barriers identified include financing restrictions that constrain private capital mobilization domestically, fragmented regulatory requirements across EU member states, scarcity of specialized expertise in defence venture capital, and the elevated risk profiles inherent to DSR-focused companies. These obstacles are particularly acute as companies transition from seed and Series A funding into growth and industrial-scale deployment phases. The challenge is not merely attracting capital at the earliest stages—where VC funding has become increasingly plentiful—but rather ensuring frictionless capital flow through the entire maturation pipeline so that innovative solutions can be deployed at scale across the Alliance.
For NATO's 5% defence spending commitment to generate meaningful economic growth and strengthen national security architecture, institutional investors and venture capital firms must successfully navigate regulatory harmonization, build sector-specific expertise, and establish investment theses capable of bridging the gap between innovative startup development and traditional defence primes. Nations that fail to integrate startup-led innovation effectively risk falling behind in next-generation warfare capabilities, making the resolution of capital mobilization barriers a strategic imperative for European defence competitiveness.
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