[EN] For decades, complementary monetary systems (CMSs) and open innovation in the local
area have coexisted alongside official currencies. Today, when it is most necessary to innovate and act
locally to solve global problems, it is appropriate to increase the usefulness of financial instruments,
such as social and complementary currencies, which can contribute to building more sustainable and
resilient cities and thus achieve the Sustainable Development Goals (SDGs). This research, through a
synthetic analysis, contributes to the scientific debate on the usefulness of the CMSs. It examines
the practical way in which these instruments can be used to innovate in local financial systems as
elements capable of promoting and dynamizing the economic and social relations of a locality.S
