When you get a counter offer, you have three ways to respond to it: accept it exactly as written, reject it and walk away, or send back your own counter offer with revised terms. Each response has legal consequences, because under contract law a counter offer both rejects the prior proposal and creates a new one in its place. Knowing how to respond to a counter offer means picking the right option for your situation, putting it in a form the law will enforce, and getting it to the other side before the clock runs out.
Read What Actually Changed
Put the original terms and the counter offer next to each other and mark every difference. Price and salary are the obvious ones, but counter offers routinely move timelines, payment schedules, warranty periods, and conditions as well. A counter on a home purchase might cut $15,000 off the price while pulling the closing date forward by two weeks. An employment counter might trim the base salary but add a signing bonus or remote-work arrangement. Two changes that look small in isolation can shift the value of the deal considerably once you add them up.
Test the new terms against outside data before you decide anything. Comparable sales and appraisals do that job for real estate. Salary surveys and cost-of-living figures do it for employment offers. Historical pricing and competitor bids do it for commercial contracts. Without an external reference, you have no way to tell whether the counter is reasonable or an outlier.
Decide Your Walk-Away Point First
Before you respond, pick the worst set of terms you would still accept: a minimum salary, a maximum price, a latest acceptable delivery date. If the counter offer already crosses that line, the honest response is a clean rejection rather than a long negotiation toward a deal you cannot live with. Setting the boundary in advance keeps the back-and-forth from pulling you past it.
Option One: Accept
If the counter works for you, accept it cleanly. Under the mirror image rule, your acceptance must reflect the counter offer without any modifications for a binding contract to form.1LII / Legal Information Institute. Mirror Image Rule Change a single term, even a small one, and you have not accepted at all; you have made a fresh counter offer, and the deal is not done. If you want the counter as written, say so plainly and sign exactly what was sent.
Option Two: Reject
You can decline without proposing anything. A rejection ends the negotiation. Once you reject, that counter offer is dead, and you cannot come back later and accept it unless the other party chooses to renew the terms. If you are close to your walk-away point and the other side keeps moving in the wrong direction, a clear rejection is often more useful than another round of talks.
Option Three: Send Your Own Counter Offer
You can respond with a revised set of terms. This keeps the negotiation alive, but it also kills the counter you just received. Under the Restatement (Second) of Contracts § 39, a counter offer is treated as both a rejection of the prior proposal and a new offer in its place, which means your response terminates the other party’s original terms and you generally cannot go back and pick them up again. Every response you send reshapes what is on the table.
Draft the response so it cannot be misread. Reference the prior counter by date, name the parties, and identify the transaction (property address, job title, contract number). Open with a clear statement of whether you are accepting, rejecting, or proposing new terms. If you are proposing new terms, state each figure or condition precisely. Not “a more competitive price” but the exact dollar amount. Not “a sooner closing date” but the date itself. Every revised term should be backed by the data you used to evaluate the counter, so you can explain how you got there if asked.
In many industries, standardized counter offer forms already exist. Real estate transactions commonly use pre-formatted forms available through licensed brokers, with designated fields for adjusted prices, dates, contingencies, and deadlines. Even where no standard form exists, mirroring the structure of the original offer makes it easier for both sides to see what actually changed.
Put It in Writing
For some deals, a verbal response will not hold up. The Statute of Frauds, adopted in every state, requires certain categories of contracts to be in writing and signed by the party against whom enforcement is sought. Real estate is the most familiar example: a verbal counter offer on a home purchase is generally unenforceable, no matter how clearly both sides agreed over the phone. Contracts that cannot be performed within one year also fall under the Statute of Frauds and must be written.
For the sale of goods, the Uniform Commercial Code requires a signed writing when the price reaches $500 or more.2Cornell Law Institute. UCC 2-201 Formal Requirements Statute of Frauds The writing does not have to capture every detail, but it must show that a contract was made and must state the quantity of goods involved. Even where the law does not strictly require it, putting your response in writing eliminates disputes about what was actually agreed to and creates a paper trail that protects both sides.
Watch the Deadline, and Set Your Own
Most counter offers include an expiration date, and missing it ends the negotiation. In real estate, response windows commonly run 24 to 72 hours from receipt. Commercial contracts may allow several business days or longer depending on complexity. If no deadline is stated, the counter stays open for a “reasonable time,” which depends on the nature of the transaction, market volatility, and how the offer was communicated.
An expired counter offer cannot be accepted. If the deadline passes, you would need to submit a fresh proposal to restart negotiations, and the other party is free at that point to offer different terms or walk away entirely.
When you send your own counter, include a specific expiration date and time. Language like “this counter offer expires at 5:00 PM Eastern Time on June 15, 2026” removes ambiguity and stops the other party from sitting on your proposal indefinitely while they shop it around.
How to Deliver the Response
Delivery matters because you may need to prove your response was sent on time and received. Pick a method that creates a verifiable record.
- Certified mail requires a signature on delivery and provides a tracking number. It is the traditional choice for physical documents.
- Electronic signature platforms like DocuSign or Adobe Sign log the time, date, and identity of the signer. Under the federal Electronic Signatures in Global and National Commerce Act, a contract or signature cannot be denied legal effect solely because it is in electronic form.3Office of the Law Revision Counsel. 15 USC 7001 General Rule of Validity
- Online submission portals, common in corporate procurement and large real estate transactions, generate automated confirmation receipts. Save the confirmation as proof.
- Email with a read receipt is acceptable for many business negotiations, though a read receipt only confirms the message was opened, not that the attachment was reviewed.
For electronic delivery to hold up legally, the record must be stored in a form that can be accurately reproduced later by everyone entitled to access it.3Office of the Law Revision Counsel. 15 USC 7001 General Rule of Validity In practice, that means using formats like PDF rather than editable documents that could be altered after the fact.
When Your Response Is Legally Effective
The timing rule depends on what you are sending. Under the mailbox rule, an acceptance in a bilateral contract is generally effective the moment it leaves your possession, meaning when the letter is dropped in the mail rather than when it arrives.4Cornell Law Institute. Mailbox Rule Counter offers, rejections, and revocations work differently. They typically become effective only when the other party actually receives them. If you are mailing an acceptance, timing runs from when you send it. If you are mailing a new counter offer, the other party is not on the hook until it arrives.
If You Change Your Mind: Withdrawing Your Response
If you send a counter offer and then think better of it, you can withdraw it, but only if the other party has not yet accepted. Once acceptance happens, a binding contract exists and withdrawal is off the table.
A withdrawal (or revocation) can be communicated by any reasonable means: phone, email, text, or letter. The critical requirement is that your withdrawal must reach the other party before their acceptance does. Given the time pressure, send written notice immediately even if you also make the call, because the written record fixes exactly when the withdrawal went out if there is later a dispute about which came first. A dated statement identifying the counter offer and stating that you are revoking it is enough. If you are working through an agent such as a real estate broker, authorize them to communicate the withdrawal right away rather than waiting for paperwork.
The UCC Exception for Sales of Goods
The mirror image rule is strict for real estate, employment, and service contracts. For the sale of goods between merchants, the Uniform Commercial Code relaxes it. Under UCC § 2-207, an acceptance that includes additional or different terms can still operate as a valid acceptance rather than a counter offer, as long as the acceptance is not explicitly conditional on the other side agreeing to the new terms. Between merchants, those additional terms automatically become part of the contract unless they materially change the deal, the original offer expressly limited acceptance to its own terms, or the other party objects within a reasonable time.5Cornell Law Institute. UCC 2-207 Additional Terms in Acceptance or Confirmation
The practical effect: if you are buying or selling goods and the other party’s “acceptance” adds a minor term like a different shipping method, a contract may already exist even though the terms do not match perfectly. For real estate and employment, even small changes reset the counter offer cycle.
Keep Every Version Until the Deal Closes
Save each document exchanged during the negotiation: the original offer, every counter offer, every acceptance or rejection, and all delivery confirmations. File them in date order. If a dispute later comes up over what was agreed or whether a deadline was met, timestamps from electronic signature platforms and certified mail tracking numbers are often what settles it. And while you wait for a response, do not act as if a deal already exists. Hiring movers before the purchase is finalized, or giving notice at your current job before the new employer has signed, can turn into real financial loss if the negotiation falls apart at the last step.