This Practice Note deals with taking security over contractual rights in general. It explains: • typical methods of taking security over contractual rights • key provisions to check in the contract which is to be assigned, including governing law, restrictions on assignment and contractual rights of set-off • key terms to be included in the security document • issues relating to serving notice of the security on the contract counterparty, and • perfection and priority issues Detailed information on assignments by way of security, including the differences between statutory and equitable assignments and the reasons for serving notice, is contained in Practice Note: Assignments by way of security. What are contractual rights and when is security taken over them? What is meant by contractual rights? Rights under contracts are intangible assets rather than tangible assets such as goods or land. They are what is known as a chose in action, meaning that they are recoverable by legal action. Contractual rights can include: • rights to payment of debts (known as receivables), including book debts