Coordinating Research and Development Efforts for Quality Improvement along a Supply Chain

The optimal design of two-part tariffs is investigated in a dynamic model where two firms belonging to the same supply chain invest in R&D (research and development) activities to increase the perceived quality of the final product. It is shown that the replication of the vertically integrated monopolist\u2019s per- formance can be attained using a two-part tariffin which the fee is a linear function of either the up- stream R&D effort or product quality itself. The possibility of relying on R&D figures appearing in the upstream firm\u2019s balance sheet is desirable as quality enhancement might not be observable or verifiable