NOVATION
Whereas assignment only transfers a party’s rights under a contract, novation transfers both a party’s rights and its obligations. Strictly speaking, the original contract is extinguished and a new one formed between the incoming party and the remaining party to the original contract. This new contract has the same terms as the original, unless expressly agreed otherwise by the parties.
Another key difference from assignment is that novation requires the consent of all parties involved, i.e. the transferring party, the counterparty, and the incoming party. With assignment, the transferring party is only required to notify its counterparty of the assignment. Consent to a novation can be given when the original contract is first entered into. However, when giving consent to a future novation, the parties must be clear what the terms of the new contract will be.