Skip to content

What Are the Requirements for an Offer and Acceptance to Be Valid?

In Short

  • A valid offer must be clear, communicated and made with the intention of creating legal relations. Acceptance must be unconditional, timely and communicated.
  • Duress, capacity and mutual conduct can affect contract validity. Silence may count as acceptance in specific situations.
  • Agreements can form through actions, like exchanging goods or services, without formal terms.

Tips for Businesses
To avoid disputes, ensure your offers and acceptances are clear and properly communicated. Always specify terms like deadlines and acceptance methods in writing. Be cautious of potential issues such as coercion or parties lacking legal capacity. Seek legal advice if you are uncertain about the validity of your agreement.


Table of Contents

Offer and acceptance are two fundamental aspects of contract law. The rules surrounding them determine when a legally binding agreement has been made. The offer must be clear, communicated, and legally capable of being accepted. Similarly, the acceptance must be unequivocal and made in response to a valid offer. To ensure the contract is legally enforceable, both the offer and acceptance must meet specific requirements under New Zealand law. This article explores the requirements for offer and acceptance and additional considerations. 

What is an Offer?

An offer is an expression of willingness to enter into an agreement on specific terms, made with the intention that, upon acceptance, it will result in a binding contract. The person making the offer (the offeror) is bound by the terms once the offer is accepted. 

Key characteristics of an offer include:

  • Intention to create legal relations: For an offer to be valid, it must reflect the offeror’s intention to create a legally binding agreement. An offer made without any serious intent will not be legally binding. 
  • Clarity of Terms: The terms of the offer must be clear enough for the offeree (the person to whom the offer is made) to understand the nature of the agreement. If the terms are vague or ambiguous, no valid contract can arise. An uncertain offer may not be enforceable because it would be impossible to determine the precise obligations of the parties involved. 
  • Communication: The offer must be communicated to the offeree. If the offer is not communicated, the offeree cannot accept it. This means that any offer made in private, or one where the offeree is unaware, cannot result in a valid acceptance. 
  • Offeree: Offers can be made to specific individuals, a group, or the public at large. A unilateral offer is made to the public, such as when a reward is offered for the return of lost property. In such cases, the offeree can accept the offer by performing the required act, such as returning the lost property. 
Front page of publication
Commercial Contracts Checklist

To protect your business, ensure supplier contracts meet your business’ needs. Our free Commercial Contracts Checklist will help.

Download Now

What is Acceptance?

Acceptance is defined as the explicit agreement to the terms of the offer, made in the manner specified or implied by the offeror. The acceptance must align with the terms of the offer and be communicated to the offeror clearly. To be valid, acceptance must meet the following requirements:

  • Unconditional and Unequivocal: For the acceptance to be valid, it must be unconditional and mirror the terms of the offer. Any modification or change in terms would be considered a counteroffer, not an acceptance. 
  • Communication: The acceptance must be communicated to the offeror in the manner prescribed in the offer. If the offer specifies a particular acceptance method, such as by phone or in writing, the offeree must comply with that requirement. Failure to follow the prescribed method may invalidate acceptance. However, if no specific method is required, the offeree can accept in any reasonable way. 
  • Timeliness: An offer can usually be revoked at any time before acceptance. Therefore, the acceptance must be made within the time frame specified in the offer or within a reasonable time if no time frame is specified. 
  • Rejection of the Offer: If the offeree rejects the offer, this terminates the offer. 
Continue reading this article below the form

Additional Considerations 

In addition to the core requirements of offer and acceptance, other factors can impact the validity of a contract. One factor is the presence of duress or undue influence. The contract may be voidable if either party is coerced into making an offer or acceptance under pressure or threats. This ensures that both parties are entering into the agreement voluntarily.

Another consideration is whether the parties involved have the capacity to enter into a contract. Certain individuals, such as minors or those suffering from mental incapacity, may not have the legal ability to form binding contracts unless specific conditions are met. If one of the parties lacks the necessary capacity, the agreement may be unenforceable.

In some cases, silence can also play a role in determining whether acceptance has occurred. While silence alone is not generally accepted, there are certain situations where the offeree’s silence may be interpreted as consent. This includes a: 

  • ongoing course of dealing; or 
  • prior agreement. 

Lastly, the law also recognises that contracts can be formed through conduct. If the parties’ actions clearly demonstrate their mutual intention to enter an agreement, a contract may be formed without any formal offer or acceptance. This is often seen in commercial transactions, where the exchange of goods and services can signify agreement to the underlying terms.

Key Takeaways

The requirements for a valid offer and acceptance are essential to the formation of a legally binding contract under NZ law. Both the offer and acceptance must be:

  • clear;
  • communicated; and 
  • made with the intention of creating legal relations. 

Additionally, other factors affecting contract validity include duress, capacity and conduct. Contracts may be voidable if made under coercion or involving parties without legal capacity, such as minors. Silence can indicate acceptance in specific contexts. Similarly, mutual conduct, such as exchanging goods or services, can establish a binding agreement without formal terms.

If you are entering a contract, our experienced contract lawyers can assist as part of our LegalVision membership. You will have unlimited access to lawyers who can answer your questions and draft and review your documents for a low monthly fee. Call us today at 0800 005 570 or visit our membership page.

Frequently Asked Questions

Can a counteroffer be accepted to form a contract?

A counteroffer effectively rejects the original offer and presents new terms for agreement. This means the original offer is no longer valid and cannot be accepted. For a contract to be formed, the party receiving the counteroffer must explicitly accept the new terms. The counteroffer then becomes the new offer, and its acceptance creates a binding contract.

What happens if an offer is not accepted within a specified time?

If an offer includes a deadline for acceptance, it will typically lapse once that time passes. This means the offer is no longer valid unless the offeror explicitly renews it. If no specific time is stated, the law requires acceptance to occur within a reasonable time, which is judged based on the circumstances of the case.

Register for our free webinars

Responsible AI Use: Practical Tips For Businesses

Online
Learn how your business can manage AI’s legal risks effectively. Register for our free webinar.
Register Now

Redundancies and Restructuring: Understanding Your Employer Obligations

Online
Understand your obligations during redundancies and restructuring to protect your business. Register for our free webinar.
Register Now

Tips to Help Your Business Avoid Going to Court

Online
Learn how to resolve disputes efficiently and avoid costly court battles. Register for our free webinar.
Register Now

Supercharging Your Brand: How to Protect Your Brand And Drive Growth

Online
Build a stronger brand by protecting and using your trade marks effectively. Register for our free webinar.
Register Now
See more webinars >
Georgia MacKay

Georgia MacKay

Associate | View profile

Georgia is an Associate who forms part of LegalVision’s Commercial Contracts team in New Zealand. At LegalVision, Georgia assists clients with a wide range of commercial and contractual matters, including policy drafting, licensing agreements, contract drafting, and general commercial law advice.

Qualifications: Bachelor of Laws (Hons). 

Read all articles by Georgia

About LegalVision

LegalVision is an innovative commercial law firm that provides businesses with affordable, unlimited and ongoing legal assistance through our membership. We operate in Australia, the United Kingdom and New Zealand.

Learn more

We’re an award-winning law firm

  • Award

    2025 Future of Legal Services Innovation Finalist - Legal Innovation Awards

  • Award

    2025 Employer of Choice - Australasian Lawyer

  • Award

    2024 Law Company of the Year Finalist - The Lawyer Awards

  • Award

    2024 Law Firm of the Year Finalist - Modern Law Private Client Awards

  • Award

    2022 Law Firm of the Year - Australasian Law Awards