A letter of assignment is a signed document that transfers your rights or interests under a contract or asset to another party, who then stands in your place to collect, enforce, or own what was transferred. The person making the transfer is the assignor; the person receiving it is the assignee. These documents turn up when a lender sells loans, a business hands off its right to collect invoices, an inventor conveys a patent, or a landlord redirects rent payments. Done properly, the assignee can enforce the transferred rights directly against whoever owed the original obligation.
What the Document Actually Transfers
At its core, an assignment moves the benefit of a contract from one party to another without canceling the underlying agreement. If you have the right to receive monthly payments under a lease, you can assign that income stream to someone else. The tenant’s obligations don’t change; only the payee does. Payment rights, intellectual property, insurance claims, and accounts receivable are the assets you’ll see assigned most often.
Two features of this transfer catch people off guard.
First, the assignee takes the rights subject to the original contract’s terms and any defenses the obligor could have raised against the assignor.1Cornell Law School. UCC 9-404 – Rights Acquired by Assignee; Claims and Defenses Against Assignee If the assignor breached, the obligor can raise that breach against the assignee. Buying someone’s right to collect a debt doesn’t wipe out the debtor’s legitimate complaints about the underlying deal.
Second, transferring rights does not transfer duties. If the original contract required the assignor to perform services or meet conditions, those obligations survive the assignment. The assignor stays liable for them unless the other party formally releases the assignor, which is a different mechanism called novation.
Assignment Versus Novation
The difference matters for your ongoing liability. An assignment moves your rights; your duties under the original contract stay with you. A novation replaces you entirely. The original contract is canceled and a new one takes its place with the incoming party stepping into both the rights and the obligations.
If you assign a contract and the assignee fails to perform, the other party can still come after you. If you novate the contract, you’re out. The protection has a cost: a novation requires everyone’s consent, including the counterparty to the original contract. An assignment can often proceed without the other side’s permission, unless the contract says otherwise.
When You Can’t Assign
Not every right is freely transferable. Check these restrictions before drafting anything.
Anti-Assignment Clauses
Many commercial contracts prohibit either party from assigning rights without the other side’s written consent. Read the original contract first. Assigning in violation of such a clause can be a breach that exposes the assignor to damages.
There is a significant exception. The UCC makes anti-assignment clauses ineffective when applied to accounts receivable, payment rights, and certain other financial interests, because restricting the transfer of payment rights would strangle commercial lending. Outside those UCC-protected categories, anti-assignment clauses are generally enforceable.
Personal Services and Relationship-Based Contracts
Contracts that depend on the unique skills, judgment, or personal relationship of a party are typically non-assignable. If you hired a specific architect, that architect cannot hand the job to another firm without your consent. The same principle covers employment agreements and professional retainers. Courts look at whether the assignment would materially change the obligation owed to the non-assigning party or increase their burden or risk.
Statutory Restrictions
Some rights are limited by law. Wage assignments are regulated in most states and often require specific notice to the employee along with the right to revoke. Personal injury claims are generally not assignable in most jurisdictions. Government contracts frequently carry their own assignment restrictions.
Partial Assignments
You don’t have to assign everything. An assignor can transfer part of a contractual right as long as the obligor can perform that piece separately from the rest. Partial assignment of a payment right is always enforceable: if someone owes you $10,000, you can assign $3,000 of that right and keep the balance.
The procedural catch: if the obligor objects, neither the assignor nor the assignee can sue alone. Both must be joined in the same lawsuit, so the obligor isn’t dragged into multiple suits over slices of one obligation.
What the Letter Should Contain
A letter of assignment needs enough specificity that no one can later argue about what was transferred, to whom, or on what terms.
- Full legal names and addresses of both parties, exactly as they appear on corporate filings or government identification. Nicknames and abbreviations invite disputes.
- A precise description of the rights being transferred. Identify the original contract by date, parties, and reference numbers. For a debt, state the exact dollar amount. For a patent, include the registration number. For real property, describe the parcel in enough detail to distinguish it from neighbors.
- Scope of the transfer. Specify whether the assignment covers all rights or only a portion, and define what the assignor retains.
- Consideration. State what the assignee is paying or giving. Some jurisdictions enforce gratuitous written assignments, but naming the consideration removes a ground for challenge.
- Effective date, which may differ from the signing date.
- Governing law, so there’s no fight over which state’s rules apply.
- Representations of authority confirming the assignor has the right to transfer and that the rights have not already been assigned.
Patent and trademark assignments have an extra layer. The USPTO requires a cover sheet identifying the transferring party, the receiving party’s name and address, a description of the interest being conveyed, and each application or registration number affected.2United States Patent and Trademark Office. MPEP 302 – Recording of Assignment Documents
Signing and Execution
How you sign depends on what’s being transferred. For most commercial assignments of contract rights or receivables, a written document signed by the assignor is enough. Some organizations charge administrative fees to process assignment paperwork in their internal records, so ask before finalizing.
Notarization
Real estate assignments almost always require notarization. County recording offices will reject documents without a notary’s signature and seal, and an unnotarized real estate transfer can be challenged as invalid. Notary fees are modest, with most states capping the charge somewhere between $2 and $25 per act. Remote online notarization is increasingly available and tends to cost slightly more.
Electronic Signatures
For assignments that don’t involve real property, electronic signatures are a practical option. Federal law provides that a signature or contract cannot be denied legal effect solely because it is in electronic form, so long as the transaction involves interstate or foreign commerce.3Office of the Law Revision Counsel. 15 USC 7001 – General Rule of Validity An electronic signature can be a typed name or a digitally captured signature, as long as the signer intended it as their signature. Some categories, including wills, trusts, adoption and divorce papers, and certain UCC-governed documents, have their own signature rules that electronic signing may not satisfy.
Notifying the Obligor
This is where assignments either go smoothly or create expensive problems. The obligor is the party who owes performance under the original contract. If a lender assigned your car loan, you’re the obligor, and you need to know where to send the check.
Under the UCC, an obligor who pays the original assignor before receiving notice of the assignment is fully discharged of that payment. The assignee cannot demand the obligor pay again. Once the obligor receives proper notice, the rule flips: from that point on, the obligor must pay the assignee and gets no credit for anything sent to the assignor.1Cornell Law School. UCC 9-404 – Rights Acquired by Assignee; Claims and Defenses Against Assignee For assignees, prompt notice is a financial priority, not a formality.
Send notification by certified mail with return receipt requested. That creates a verifiable record of when the obligor received it. A written acknowledgment from the obligor confirming the update to their records adds another layer of protection.
Mortgage loans carry a hard federal deadline. When a mortgage is transferred, the new creditor must notify the borrower in writing within 30 days, providing the new creditor’s identity, contact information, the transfer date, and where the transfer is recorded.4Office of the Law Revision Counsel. 15 USC 1641 – Liability of Assignees Missing that window creates liability for the assignee under federal consumer protection law.
Recording and Filing
Some assignments need a public filing to be fully effective against third parties. Which filing depends on what you’re transferring.
Secured Interests and UCC Filings
When a secured creditor assigns its interest in collateral, the assignment should be reflected in the public UCC records. The secured party of record can file an amendment to the original financing statement that identifies the initial filing by file number, names the assignor, and provides the assignee’s name and mailing address.5Cornell Law School. UCC 9-514 – Assignment of Powers of Secured Party of Record Skipping this step doesn’t necessarily void the assignment between the parties, but it can create priority problems if competing claims surface.
Intellectual Property
Patent and trademark assignments should be recorded with the USPTO using the cover sheet described above.2United States Patent and Trademark Office. MPEP 302 – Recording of Assignment Documents Recording is not technically required for the assignment to be valid between assignor and assignee, but an unrecorded assignment can lose out to a later recorded transfer to a different party who had no knowledge of the first one.
Real Estate
Assignments of interests in real property must be recorded with the county recorder’s office where the property sits. Recording fees range widely, from as little as $15 to well over $50 depending on the jurisdiction and document length. Local formatting and notarization requirements are strict, and nonconforming documents get rejected.
Tax Reporting When Debt Is Assigned
If a creditor assigns a debt for less than its face value and the debtor’s obligation is reduced or canceled as part of the transaction, the IRS may require reporting. A creditor that cancels $600 or more of debt must file Form 1099-C, and the debtor will owe income tax on the forgiven amount unless an exclusion applies.6Internal Revenue Service. Instructions for Forms 1099-A and 1099-C A straight sale of the debt to a collection agency, where the debtor still owes the full balance to the new holder, does not trigger 1099-C reporting. The distinction turns on whether the debtor’s liability actually decreased.