This briefing note presents key lessons learned from MicroSave’s work with its Action Research Partners (ARPs) on pilot testing new financial services. It also identifies key factors that lead to successful pilot testing such as detailed understanding of customer needs and creation of well-defined products that meet those needs. Moreover, it presents key lessons learned in all the ten aspects of pilot testing. The note also ascertains three major questions—What impact has pilot testing had on the Action Research Partners? Should we always pilot test new products? Should we always pilot test new products?—which are frequently asked before pilot testing.