Performance of contract occurs when parties fulfil their contractual obligations as agreed. Once both sides have fully performed, the contract is discharged. Partial performance may still give rise to rights, but does not always complete discharge.
Performance is the primary and most straightforward way a contract comes to an end. Each party must carry out their promised duties exactly as agreed, unless the contract allows for substantial performance or variations. Courts generally require strict compliance, especially where obligations are clear, but they may accept substantial performance where the main purpose of the contract has been achieved, as in Hoenig v Isaacs, where minor defects in work did not prevent payment of the contract price. Failure to perform fully may amount to breach, but minor deviations may still allow recovery subject to deductions. In exams, the key issue is whether what has been done amounts to complete, substantial, or defective performance.
Substantial Performance
Explore our Contract Law Notes for clear case analysis, structured revision tools, and exam-focused guidance on distinguishing full and substantial performance with confidence.