This rule applies to both written and oral contracts. Loom Treasures v. The general rule is that interest is not available for breach of contract unless allowed in the contract or by statute. However, there are many exceptions to this rule. If the debtor tenders the amount due in a liquidated damages case, this will prevent a recovery of prejudgment interest.
Restitution is an alternative to the usual measure of contract damages.
The goal of restitution damages is to put the plaintiff in as good a position as if they had never entered into the contract. They are a substitute for, not an addition to, traditional contract damages. Quantum meruit is a type of recovery founded in equity. It is often used in contracts for goods or services where there is no express contract covering the goods or services. Quantum meruit is often available for partial performance, as opposed to complete performance, of a contract.