Supply chain maturity models attempt to disseminate best practices in supply chain management (SCM). One basic idea behind these models is that increased maturity will lead to improved supply chain performance, which in turn will lead to improved financial performance. There is, however, little empirical evidence about the relationship between supply chain (SC) maturity and financial performance, specifically in SMEs. The results of this study indicate that there is a strong relationship between SCM maturity and SC performance in SMEs, as well as some relationships between SCM maturity and financial performance. One conclusion is that if firms use maturity indicators in the Supply Chain Operations Reference areas to improve their processes, they will most likely achieve positive effects on supply chain performance and probably also on financial performance.