A supply chain is a decentralized system where material, financial and information flows connect economic agents. There is much inefficiency in supply chain behaviour. Supply chain contracts are used to provide some incentives to adjust the relationship of supply chain partners to coordinate the supply chain, i.e., the total profit of the decentralized supply chain is equal to that achieved under a centralized system. When the supply chain integrates and coordinates the backward flows of goods along with the forward flows, it takes the form of a closed-loop supply chain. The integration of forward and reverse activities into a single system pursues environmental goals, creates new economic opportunities and provides competitive ad- vantages. The aim of this paper is to analyse and compare contracts for supply chain and closed-loop supply chain coordination.