European Defense Financing

How Defense Financing Actually Works

The Capital Markets Mechanics Behind European Rearmament

Sinéad O'Sullivan
2025 · BTD Foundations Download PDF

Idea in Brief

The Gap

Europe has committed €800 billion to defense. The political and strategic debates are well documented. What is almost entirely absent from public discussion is the operational mechanics: how the money is actually raised, who creates the instruments, how capital markets absorb the debt, and how the money flows from bond auction to ammunition factory.

The Mechanics

Defense finance operates through a chain of institutional decisions, capital markets operations, and procurement pipelines. Each link has its own logic, constraints, and failure modes. This paper traces the chain end to end—using Germany as a worked example—and explains why the plumbing determines the pace of rearmament.

The Implication

The gap between political commitment and operational delivery is not primarily fiscal—it is procedural. The institutions that must convert political will into flowing capital are slow, fragmented, and in several cases still being built.

Full Paper

Click below to read the full paper

Open PDF