Top 12 Countries by Business R&D Expenditure as a Percentage of GDP

In the 2026 technological landscape, South Korea continues to hold the top spot for R&D intensity. Its R&D expenditure consistently hovers between 4.5% and 5% of GDP, a figure that not only dwarfs the OECD average but is roughly double that of many developed European nations. Interestingly, the engine of Korean R&D is heavily skewed toward the private sector; conglomerates like Samsung and SK Hynix account for nearly 80% of the country's total research spending. This 'nationwide innovation' model has successfully transformed Korea from a traditional manufacturing hub into a global powerhouse in semiconductors, AI, and biotechnology. In contrast to many nations where government funding plays a larger role, Korea’s enterprise-driven approach ensures a uniquely tight feedback loop between scientific output and market demand.