Building on the natural-resource-based view, and using a sample of 7,165 European SMEs, this chapter investigates the drivers of eco-design innovations among SMEs under three categories: (1) sustainability-oriented firm capabilities, (2) technological capabilities, and (3) access to finance. The findings reveal that sustainability-oriented capabilities achieved through investments into circular economy are the strongest driver of SMEs' eco-design innovations. Firms' technological capabilities are also found to boost their ability to adopt eco-design innovations. While equity finance increases the possibilities for SMEs to devote resources to eco-design, grant finance is interestingly observed to decrease such possibilities. The more traditionally used form of debt finance remains detached from eco-design implementations. The study contributes to a better understanding of how eco-design practices can be broadened within SMEs and highlights policy recommendations in this regard.