12. Discharge by frustration: subsequent impossibility

Poole’s Casebook on Contract Law provides a comprehensive selection of case law that addresses all aspects of the subject encountered on undergraduate courses. Without the fault of either party, a contract may be automatically discharged due to frustration that renders further performance of the contract impossible, illegal, or radically different from what was originally conceived. In this case, the parties will be excused further performance of their contractual obligations. However, the frustration doctrine applies only where there is no express provision in the contract (a force majeure clause) allocating the risk. This chapter, which examines the frustration doctrine and discharge for subsequent impossibility, first considers the contractual risk allocation before turning to the theoretical basis for the doctrine of frustration. It then discusses limitations on the operation of the frustration doctrine before examining the effects of frustration and the effects on the parties’ positions of the Law Reform (Frustrated Contracts) Act 1943.