National Real Estate Exam (PSI)ContractsMedium

A buyer sends a seller a written offer to purchase a home for $300,000. The seller signs the offer but crosses out the closing date and writes in a new date before returning it. Under contract law, what is the legal effect of the seller's change?

  1. AThe buyer's offer remains valid and the seller's change is void
  2. BThe original offer is automatically accepted with the new closing date
  3. CThe contract is voidable only by the seller
  4. DThe seller has made a counteroffer, rejecting the buyer's original offer
Show answer & explanation

Correct answer: D. The seller has made a counteroffer, rejecting the buyer's original offer

Under the mirror-image rule, an acceptance must match the terms of the offer exactly. Any change to the terms creates a counteroffer, which rejects the original offer and requires the original offeror's (buyer's) acceptance to form a contract.

Why the other options are wrong

  • A. The original offer is terminated once a counteroffer is made, not merely disregarded.
  • B. Changing a term is not automatic acceptance; it voids the original offer.
  • C. Voidability doesn't apply here; this is a matter of offer and acceptance, not capacity or fraud.

Mirror Image Rule

An acceptance must match the exact terms of the offer; any change constitutes a counteroffer, not an acceptance.

  • A counteroffer terminates the original offer
  • The original offeror becomes the offeree of the counteroffer
  • No contract exists until unqualified acceptance occurs

Memory trick: No exact mirror, no deal — just a new offer.

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