On the OECD’s yardstick – defense R&D budget allocations per $1,000 of GDP – the United States spends $3.64. The next country on the list, South Korea, spends $2.06, and nobody else clears a dollar.
Britain is third at $0.97, Germany fourth at $0.79, France fifth at $0.50. The average across the 20 countries ranked is $0.58; the median is $0.27. Greece, at the bottom, spends nine cents.
The gap is about to get wider: the Department of War’s request for fiscal 2027 is $1.5 trillion, 42% above this year’s funding.
As Visual Capitalist explains further, defense research and development is one way countries invest in future military capabilities, from advanced weapons systems to emerging technologies.
This visualization ranks selected OECD countries by defense research and development (R&D) budget allocations per $1,000 of GDP. The data comes from the OECD Economic Outlook, Volume 2026 Issue 1, with figures covering 2024 or the latest available year as of August 2026.
Defense R&D has also historically played an important role in shaping civilian technologies. Research tied to national security has helped support breakthroughs in fields such as computing, aerospace, satellites, medicine, and advanced materials. However, the link between military spending and innovation is not automatic, as secrecy can impede knowledge diffusion, among other factors.
The U.S. Leads by a Wide Margin
The United States ranked first, with defense R&D budget allocations equal to $3.64 per $1,000 of GDP. In absolute terms, the U.S. is also the world’s highest military-spending country by a wide margin, with 2025 spending totaling $954 billion and accounting for one-third of global military spending that year.
The U.S. allocation was nearly 1.8 times South Korea’s and more than 3.7 times the United Kingdom’s, which ranked second and third, respectively.
Hellbound and Down 