Novation replaces one contract with another, discharging the original obligation entirely and substituting a new obligor, new obligee, or new terms in its place. Unlike an assignment, which transfers rights but generally leaves the original party still liable if the assignee fails to perform, a valid novation releases the original party completely -- the old contract simply ceases to exist as a source of liability.

Because novation extinguishes rather than merely transfers an obligation, courts require clear evidence that every affected party actually agreed to that result. Silence, mere acquiescence, or an assumption of convenience is not enough; novation is found only where the parties' intent to discharge the original obligation is unambiguous.

A valid novation generally requires: (1) an existing, valid contract; (2) agreement among all relevant parties -- the original obligor, the original obligee, and the new party -- to the substitution; (3) extinguishment of the original obligation; and (4) a new, valid contract taking its place, supported by its own consideration. All parties whose rights or obligations are being discharged or created must consent; a novation cannot be imposed unilaterally by one party or by the new party alone.

Consideration for the new contract can be found in the mutual promises of substitution themselves -- the original obligee's promise to release the original obligor is generally sufficient consideration for the new obligor's promise to perform, and vice versa.

An assignment transfers the assignor's rights under a contract to a third party but does not, by itself, release the assignor from the assignor's own obligations -- the original obligee can generally still look to the assignor if the assignee fails to perform, absent a separate release. A delegation similarly shifts performance duties to a third party without discharging the delegating party's ultimate liability for that performance.

Novation is different in kind, not just degree: it requires the original obligee's affirmative agreement to release the original party and look solely to the new party going forward. This is why novation typically requires the consent of all three parties, while an assignment or delegation frequently requires only the assigning or delegating party's own decision (subject to any contractual anti-assignment clause).

Because novation discharges an existing obligation, courts look for clear and unambiguous evidence of intent, and the burden of proving a novation generally falls on the party asserting it. A written novation agreement expressly stating that the original contract is discharged is the clearest evidence; without one, courts examine the surrounding conduct -- whether the original obligee accepted performance exclusively from the new party over time, whether it demanded payment or performance from the original party after the substitution, and whether the parties' communications reflect an understanding that the old contract was dead.

Continued acceptance of partial performance from the original party, or a reservation of rights against the original party, tends to defeat a novation defense even where a new arrangement with a third party was clearly contemplated.

In Juricratic, novation is modeled as a discharge event on the claim timeline: once a valid novation is established, the original contract's claim path is closed to the original obligor, and the simulation should redirect the claim to the substituted party's contract instead. Because courts require unambiguous tripartite consent, a novation defense is only as strong as the documentary record showing all three parties agreed -- war-gaming this doctrine means dialing the strength of that consent evidence (a signed novation agreement versus inferred conduct) and observing how sharply the defense's win probability drops as the evidence shifts from express to merely circumstantial.

This makes novation a useful early filter in any matter involving corporate restructuring, contract assignment disputes, or successor-liability questions, where the real fight is often just whether a novation happened at all.