A contract with no consideration in New York is generally unenforceable, but the state recognizes a cluster of statutory and equitable exceptions that can rescue the promise anyway. Most of them live in General Obligations Law Title 11 and turn on whether the agreement is in a signed writing. A handful of others, including promissory estoppel, charitable pledge doctrine, unjust enrichment, and quantum meruit, can fill the gap when the statutes do not.
Which exception applies depends on what kind of agreement you have, whether it is written and signed, and what the other side did in reliance. Getting the category right is what determines whether you have an enforceable deal or just a promise.
Why Consideration Matters in the First Place
Consideration is the “something of value” each party gives up or promises when forming a contract. It can be money, services, a promise to act, or a promise to refrain from doing something you have a right to do. Without it, most agreements are treated as gifts or unenforceable promises rather than binding contracts.
When a court finds no consideration and no exception applies, the agreement cannot be sued on. The party who was expecting performance has no breach-of-contract claim. The burden in litigation sits on the party trying to enforce the agreement, so if the other side raises lack of consideration, you need to point to a specific exchange of value or fit the deal into one of the exceptions below.
Signed Writings That Substitute for Consideration
New York’s approach is more flexible than the traditional common-law rule, and it catches lawyers from other states off guard. General Obligations Law Title 11 treats several categories of signed written instruments as enforceable without any consideration at all.
- Modifications and discharges of contracts, leases, and mortgages, under GOB 5-1103.1New York State Senate. New York General Obligations Law 5-1103 – Written Agreement for Modification or Discharge
- Promises resting on past consideration, under GOB 5-1105, as long as the writing identifies what the past consideration was.2New York State Senate. New York General Obligations Law 5-1105 – Written Promise Expressing Past Consideration
- Written assignments, which irrevocably transfer the assignor’s rights under GOB 5-1107 without consideration.
- Irrevocable offers held open for a stated period, under GOB 5-1109.3New York State Senate. New York General Obligations Law 5-1109 – Written Irrevocable Offer
- Agreements to buy or sell securities and stock, under GOB 5-1101, even if the seller does not own the securities at the time.4New York State Senate. New York General Obligations Law 5-1101 – Agreements Void for Want of Consideration
The common thread is the signed writing. If your document is unsigned or the deal is oral, none of these provisions help you.
Changing a Contract Without New Consideration
Under traditional contract principles, every modification needs fresh consideration. If your vendor agrees to push a delivery back two weeks, you technically owe something new in return. New York rejects this requirement in two different ways, depending on what the contract is about.
Service Contracts, Leases, and Loans Under GOB 5-1103
For service agreements, leases, employment contracts, loan modifications, and settlements, a written and signed modification is enforceable without new consideration.1New York State Senate. New York General Obligations Law 5-1103 – Written Agreement for Modification or Discharge The same rule applies to a written agreement discharging a contract, mortgage, or security interest in whole or in part. The critical requirement is a signature from the party you want to hold to the change. A verbal agreement your landlord never signed will not bind the landlord under this statute.
Sale-of-Goods Contracts Under UCC 2-209
For sales of goods, UCC 2-209(1) goes further: a modification is enforceable without additional consideration as long as it was made in good faith.5Legal Information Institute. Uniform Commercial Code 2-209 – Modification, Rescission and Waiver No writing is required by the UCC itself, though the original contract may require modifications to be in writing.
Good faith is where this provision has teeth. Using pressure to escape your original obligations is not a valid modification. A supplier who threatens to stop shipping unless the buyer accepts a 40% price increase with no underlying cost justification is acting in bad faith, and the modification is unenforceable. A documented spike in raw material costs that turns performance into a genuine loss can justify a price adjustment without new consideration. For merchants, the test includes “the observance of reasonable standards of fair dealing in the trade,” which in practice means an objectively demonstrable reason for the change.
Promises Based on Something Already Done
Ordinarily, work you already completed cannot serve as consideration for a new promise. If you painted your neighbor’s fence last month and they later promise to pay you $500 for it, that promise is traditionally unenforceable because the painting predated the promise.
GOB 5-1105 changes the outcome when three conditions line up: the promise is in writing and signed, the writing identifies the past consideration, and that past consideration would have been valid if exchanged at the time of the promise.2New York State Senate. New York General Obligations Law 5-1105 – Written Promise Expressing Past Consideration A vague written “thank you” that alludes to unspecified past help will not satisfy the statute. The past benefit must be specifically described, and the party seeking enforcement has to prove it was actually conferred.
This matters most in business relationships where services are rendered informally and papered after the fact, and in family situations where one relative performs work or lends money and the other later signs a written promise to repay.
Reviving a Debt the Statute of Limitations Already Killed
New York’s general statute of limitations for breach of contract is six years, running from the date of the breach.6New York State Senate. New York Civil Practice Law and Rules 213 – Actions To Be Commenced Within Six Years Once that window closes, a creditor ordinarily cannot sue.
General Obligations Law 17-101 provides a way back in. A signed written acknowledgment of an existing debt effectively restarts the clock, making the debt enforceable again. The writing must recognize the debt and contain nothing inconsistent with an intention to pay it. Courts require clear written recognition of the specific obligation. A letter that merely references a past business relationship without identifying the debt is not enough.
If you owe money and the limitations period has run, be cautious before signing anything that describes or quantifies the debt. A casual acknowledgment can reopen a claim that was otherwise dead.
Keeping an Offer Open Without Being Paid for It
At common law, an offer can be revoked at any time before acceptance unless the offeree pays separate consideration to keep it open. New York has two statutory workarounds.
General Contracts Under GOB 5-1109
A signed written offer stating that it is irrevocable during a specified period cannot be revoked during that time, even without consideration for the promise to hold it open.3New York State Senate. New York General Obligations Law 5-1109 – Written Irrevocable Offer If the writing says the offer is irrevocable but does not set a period, it stays open for a reasonable time. This applies to all types of contracts, not just goods.
Merchant Firm Offers Under UCC 2-205
For sales of goods, UCC 2-205 creates a similar rule for merchants. A merchant’s signed written offer giving assurance it will stay open is irrevocable for the stated period, or for a reasonable time if none is stated, but in no case longer than three months.7Legal Information Institute. Uniform Commercial Code 2-205 – Firm Offers If the assurance of irrevocability appears on a form the offeree supplied, the offeror has to separately sign that specific term. This stops a buyer from burying a binding firm-offer clause in its own purchase order and trapping a seller who never noticed it.
Promissory Estoppel When Someone Relied on Your Promise
Promissory estoppel allows a court to enforce a promise lacking consideration when someone relied on it to their serious detriment. The elements are a clear and unambiguous promise, reasonable and foreseeable reliance, and actual injury caused by that reliance.
New York courts are notably stingy with this doctrine compared to other states. It functions primarily as a shield rather than a sword, and courts generally will not let it substitute for a fully formed contract when the parties could have made one and chose not to. Vague assurances and preliminary negotiations almost never qualify.
The doctrine comes up most often in employment disputes where a concrete promise, such as a relocation package or a guaranteed term, induced an employee to leave a prior job or turn down another offer. Even in that setting, courts examine whether the promise was truly definite and whether the reliance was proportionate to the harm claimed.
Charitable Pledges Are Treated Differently
A straight donation pledge looks like a gift, which ordinarily lacks the reciprocal exchange that consideration requires. New York courts have historically favored enforcing charitable pledges anyway, as a matter of public policy.
Courts have reached that result through several theories. Under a unilateral-contract theory, the pledge is an offer the charity accepts by incurring expenses or taking on obligations in reliance on it. Under a bilateral-contract theory, the charity’s implied promise to use the funds as the donor directed supplies the missing consideration. In Allegheny College v. National Chautauqua County Bank of Jamestown, 254 N.Y. 674 (1930), the Court of Appeals found that a charity’s duty to perpetuate the donor’s name through a memorial fund was sufficient return consideration to make a $5,000 pledge enforceable, and the court also recognized promissory estoppel as a valid alternative basis for enforcing charitable subscriptions.8Open Casebook. Allegheny College v. National Chautauqua County Bank of Jamestown
If you sign a charitable pledge and the organization acts on it by hiring staff, beginning construction, or taking on debt, expect a New York court to enforce it. Informal verbal promises to donate carry far less weight.
Recovering Value When the Contract Fails
If no exception applies and the agreement cannot be enforced, the party who performed is not always out of luck. Two equitable doctrines can produce partial recovery:
- Unjust enrichment lets you recover the value of a benefit you conferred when it would be unjust for the other party to keep it without paying. You have to show the other party received a benefit, knew or should have known it was not a gift, and has no legal basis for keeping it.
- Quantum meruit is the related claim for the reasonable value of services you performed under an agreement that turns out to be unenforceable.
Neither gives you the benefit of the bargain. You recover what you gave, not the profit you expected to earn. Courts also require clear evidence that the enrichment was unjust rather than the result of a risk you took that did not pay off. Indirect forms of consideration, like implied obligations or reciprocal benefits not spelled out in the text, can sometimes satisfy the original consideration requirement, but do not count on a court finding consideration the parties themselves could not articulate at the time.
Claims for unjust enrichment and quantum meruit carry the same six-year deadline as breach-of-contract claims.6New York State Senate. New York Civil Practice Law and Rules 213 – Actions To Be Commenced Within Six Years Missing that window forecloses your right to sue no matter how strong the underlying claim.