Promissory estoppel is an equitable theory of recovery that permits enforcement of a promise when one or more elements necessary to create an enforceable contract are missing.
The elements of promissory estoppel are generally: (1) a promise; (2) foreseeability of reliance by the promisor; (3) substantial and reasonable reliance by the promisee to its detriment; and (4) enforcing the promise is necessary to avoid injustice.
In Tennessee, promissory estoppel serves as a legal remedy that allows a party to enforce a promise even when a formal contract does not exist or certain elements for a contract are lacking. The doctrine is based on the principle of equity, aiming to prevent injustice that would result from not enforcing the promise. The elements required to establish promissory estoppel in Tennessee include: (1) a clear and definite promise, (2) the promisor's expectation or foreseeability that the promisee will rely on the promise, (3) actual and reasonable reliance on the promise by the promisee to their detriment, and (4) the necessity of enforcing the promise to avoid an injustice. If these elements are met, Tennessee courts may enforce the promise as if it were a contract, obligating the promisor to fulfill the commitment made to the promisee.