In a contract transfer, the assignor is the original party who hands over a right, and the assignee is the party who receives it and can enforce it directly against whoever owes the performance. The clearest way to think about assignor vs assignee is that one is giving up a benefit and the other is stepping into it, but the giving up is rarely as complete as people assume. The assignor commonly stays liable for the original duties tied to the contract, and the assignee takes the right with every defense and weakness already baked into the deal.
What the Assignor Gives Up and What They Keep
The assignor is the original contract party who holds a specific right, most often the right to receive money or demand performance. To make an assignment, the assignor must show a clear, present intent to give that right up completely. Under the Restatement (Second) of Contracts, an assignment extinguishes the assignor’s right to performance from the other party and creates an equivalent right in the assignee.1LexisNexis. Restatement of the Law, Second, Contracts – 317 Assignment of a Right After that, the assignor can no longer enforce that part of the contract.
The catch is that transferring rights does not transfer obligations. If you owe performance under a contract and you assign your right to receive payment, you still owe the performance. The assignor remains liable for the original duties unless every party agrees to substitute the assignee entirely through a separate agreement called novation. Without that, the assignor has moved the upside of the deal while keeping the downside.
What the Assignee Actually Receives
The assignee steps into the assignor’s position and gains legal standing to demand performance or collect payment directly from the party who owes it. If a contract entitles the assignor to a $10,000 payment for completed services, the assignee acquires the exclusive right to that sum. Courts describe this as the assignee standing in the shoes of the original party.
Those shoes come with whatever scuffs they already had. Under the Uniform Commercial Code, the assignee’s rights are subject to all the terms of the original agreement and to any defense or counterclaim the obligor could have raised against the assignor, at least for claims that arose before the obligor received notice of the assignment.2Legal Information Institute. Uniform Commercial Code 9-404 – Rights Acquired by Assignee; Claims and Defenses Against Assignee If the assignor breached the contract or delivered defective goods before the transfer, the obligor can raise those problems against the assignee. The assignment does not wash away the deal’s history.
Some commercial contracts include a waiver-of-defenses clause, where the obligor agrees not to raise claims against a future assignee. These clauses are enforceable when the assignee takes the assignment for value, in good faith, and without knowledge of existing disputes.3Legal Information Institute. Uniform Commercial Code 9-403 – Agreement Not to Assert Defenses Against Assignee Consumer transactions get extra protection, and even if the contract omits the required preservation language, the law treats it as included.
Assignment Is Not Delegation
“Assignment” is often used loosely to describe any transfer of a contract position, but the law separates assigning rights from delegating duties. An assignment moves the benefit side of a contract, such as the right to receive payment, collect a debt, or demand delivery. A delegation moves the burden side, meaning the obligation to perform work, supply goods, or provide a service.
The practical difference is who stays responsible. When a party delegates a duty, the original obligor stays on the hook. Even if someone else does the work, the delegating party remains liable if performance fails.4Legal Information Institute. Uniform Commercial Code 2-210 – Delegation of Performance; Assignment of Rights When a party assigns a right, the assignor’s entitlement is extinguished and the assignee takes over.
The language of the transfer document controls. Under the UCC, an assignment of “the contract” or “all my rights under the contract” is treated as both an assignment of rights and a delegation of duties unless the language or circumstances say otherwise.4Legal Information Institute. Uniform Commercial Code 2-210 – Delegation of Performance; Assignment of Rights When the other party to the original contract sees that kind of broad transfer, they can treat it as grounds for insecurity and demand assurances from the assignee that the work will actually get done.
Rights That Cannot Be Assigned
Not every right can be transferred. The Restatement (Second) of Contracts identifies three categories of non-assignable rights.1LexisNexis. Restatement of the Law, Second, Contracts – 317 Assignment of a Right
- Assignments that would materially change what the obligor must do, increase the obligor’s risk, or reduce the value of the deal for the obligor. Redirecting payment to a new bank account does not qualify; assigning the right to newspaper delivery to an address far outside the established route would.
- Rights that a statute or public policy makes non-assignable. Workers’ compensation claims, certain government benefits, and tort claims before judgment are typical examples.
- Rights the contract itself prohibits assigning, subject to the wording rules below.
Personal service contracts are a frequent flashpoint. When a contract depends on the specific skills, judgment, or reputation of the person performing, courts restrict assignment of the service recipient’s rights if that would materially affect the non-assigning party. A recording contract with a particular musician involves personal trust and artistic identity that cannot simply be handed to a stranger.
Anti-Assignment Clauses
Anti-assignment clauses are common in commercial leases, service agreements, and licensing deals, and their effect depends on wording. A clause that says “Party A shall not assign this contract” creates a promise not to assign. If Party A assigns anyway, the assignment is valid and the assignee gets the rights, but Party A has breached and the other side can sue for damages. To make an attempted assignment a legal nullity, the contract has to say something like “any assignment shall be void” or “Party A shall have no power to assign.”
Even strong clauses have limits. Under the UCC, a blanket prohibition on assigning “the contract” is construed narrowly and bars only delegation of duties, not assignment of rights.4Legal Information Institute. Uniform Commercial Code 2-210 – Delegation of Performance; Assignment of Rights A right to damages for breach of the entire contract can be assigned regardless of any contractual restriction. And for financial obligations, UCC Article 9 treats anti-assignment clauses in agreements involving accounts, payment rights, and promissory notes as generally ineffective, so that commercial lending and factoring can function.5Legal Information Institute. Uniform Commercial Code 9-406 – Discharge of Account Debtor; Notification of Assignment That override does not extend to outright sales of payment rights or promissory notes.
Novation: The Only Clean Exit for the Assignor
An assignment transfers rights but leaves the assignor’s original obligations in place. Novation does something more: it substitutes a new party into the contract and completely releases the old one. The line between the two is consent. An assignment can happen without the obligor’s agreement unless the contract says otherwise. A novation requires all three parties, meaning the original two plus the incoming replacement, to agree.
When novation takes effect, the departing party is discharged from all future obligations. The incoming party takes on both the rights and the duties, and the remaining original party accepts the newcomer’s liability in place of the old party’s. This is the only way for an assignor to walk away from a contract with no continuing exposure.
The practical importance shows up in situations like a business sale where the buyer takes over a long-term supply contract. A plain assignment leaves the seller liable for the buyer’s future performance for the life of the deal; a novation cuts that tie. When negotiating any contract transfer, the threshold question is whether an assignment is enough or whether the transaction really needs a novation.
Tax Consequences When Income Rights Are Assigned
Assigning a right to income does not automatically shift the tax bill. Under the assignment of income doctrine, established by the Supreme Court in Lucas v. Earl, income is taxed to the person who earns it, and that liability cannot be avoided by redirecting payment to someone else.6Justia. Lucas v. Earl, 281 U.S. 111 (1930) The Court reasoned that the fruit cannot be attributed to a different tree from the one on which it grew.
So if you earn a commission and assign the right to collect it to a family member, you still owe the tax. The doctrine does not swallow every transfer of future income rights, however. Transfers of stock options and deferred compensation incident to divorce, for example, shift the tax burden to the recipient spouse under Section 1041 of the Internal Revenue Code.7Internal Revenue Service. Revenue Ruling 2002-22
For assignees, receiving a right to income does not automatically mean owing the tax on it. The analysis depends on whether the assignor earned the income before the transfer or whether the right represents a genuine economic interest the assignee will develop independently. Anyone assigning income-producing rights should work through the tax treatment before signing, not after.