Offers And Counteroffers: Contract Formation In New Zealand

If you run a small business, you probably “make deals” every day - agreeing on price, scope, delivery dates, payment terms, and what happens if something goes wrong.

The tricky part is that, in New Zealand, a contract can be formed long before you think you’ve “finalised” anything. A quick email exchange, a signed quote, or even a “sounds good, let’s go” message can be enough to create legally enforceable obligations.

That’s why understanding contract formation (especially offers and counteroffers) is a practical business skill - it helps you avoid accidental commitments, manage negotiation risk, and lock in the terms that actually protect you.

Why Contract Formation Matters For Small Businesses

Contract formation is the legal process of how an agreement becomes an enforceable contract. In a business context, this matters because contract disputes rarely start with “we didn’t agree.” They usually start with:

• “I thought the price included X.”
• “We never agreed to that timeline.”
• “You accepted our terms when you started the work.”
• “Your website terms apply - not your quote.”

When you understand how contracts are formed, you can:

• control when you’re legally bound (and when you’re not);
• avoid ‘scope creep’ by being clear about what’s included/excluded;
• reduce payment risk by setting payment triggers and consequences;
• respond properly to negotiations without accidentally accepting the wrong terms; and
• document the deal so you’ve got something solid if things go sideways.

If you want the bigger picture of what makes an agreement enforceable, it helps to start with the core elements of contract formation (and why “handshake deals” can still be binding).

Offers: What They Are (And What They Aren’t)

An offer is a clear promise to be bound on specific terms if the other party accepts. In plain terms: it’s the point where you’re saying, “If you say yes, we have a deal.”

For contract formation, the law generally expects the offer to be sufficiently clear on key terms (for example: what’s being supplied, price, and timing). But “clear” doesn’t always mean “perfect” - and that’s where businesses get caught out.

Common Business Examples Of Offers

• A written quote that includes scope, price, and timing.
• A proposal saying “We can do X for $Y, and start on .”
• An email confirming deliverables and asking the other party to confirm.
• A services agreement or supply agreement sent for signature.

One common question we get is whether a quote is automatically binding. The answer depends on how it’s worded and what happens next - but it’s important enough that it’s worth understanding when a quotation is legally binding.

What’s Not An Offer?

Not every business communication is an offer. Some common “almost offers” are:

• Invitations to treat (invitations for others to make an offer) - for example, advertising a product or listing a price online can sometimes fall into this category.
• Preliminary discussions - “We might be able to do it for around $X” or “Let’s explore options.”
• Price estimates - especially where you clearly say it’s an estimate and final pricing will depend on scope.

In practice, the line between “offer” and “negotiation” often comes down to wording. If you want to avoid accidental contract formation, phrases like these can help:

• “This is an estimate only and not an offer capable of acceptance.”
• “Subject to contract.”
• “Pricing and scope to be confirmed in a written agreement signed by both parties.”

These won’t solve every issue on their own, but they can be strong signals that you haven’t reached the “offer” stage yet.

Counteroffers, Negotiations And The “Battle Of The Forms”

A counteroffer is when the other party responds to an offer by proposing different terms. The key point: a counteroffer usually rejects the original offer and replaces it with a new offer.

This matters because once your offer is rejected, it generally can’t be accepted later unless you re-offer it (or confirm it’s still open).

Simple Counteroffer Example

• You offer to supply goods for $8,000, delivery in 10 business days.
• The customer replies: “We accept, but can you do it for $7,200 and deliver in 5 business days?”

That reply is not an acceptance - it’s a counteroffer. If you then start work without clarifying, you may be accepting the new terms (even if you didn’t mean to).

Negotiations vs Counteroffers: The Practical Difference

Not every change request is automatically a counteroffer. Sometimes a party is simply asking a question or requesting clarification.

For example:

• “Can you confirm whether GST is included?” (usually a clarification - this is about how the price is described, not tax advice)
• “Would you consider a discount if we order more?” (usually negotiation)
• “We accept only if you remove clause 12” (much more likely a counteroffer)

If you’re trying to keep an offer open while you negotiate, you can say something like:

• “Our offer remains open on the original terms, but we’re happy to discuss alternatives.”

Battle Of The Forms (A Common Small Business Trap)

The “battle of the forms” happens when each side tries to contract on their own standard terms. For example:

• You send a quote with your terms attached.
• The customer sends a purchase order with their terms attached.
• You deliver the goods or begin services anyway.
• Later, there’s a dispute - and both sides argue their terms apply.

Courts often look at the full course of communications and conduct to work out whether a contract was formed, when it was formed, and which terms were incorporated. This is exactly why being deliberate about contract formation is so important - you want a clean paper trail showing which document is “the contract.”

If your business relies on standard terms (like for ongoing services, ecommerce sales, or supply), it’s usually worth getting those terms checked and aligned with your real-world process. Many businesses do this through a contract review so the documents match how they actually quote, invoice, and deliver.

Acceptance, Communication And When The Contract Is Made

Once there’s a valid offer, the next piece of contract formation is acceptance.

Acceptance is a clear and unconditional “yes” to the offer’s terms. If acceptance is conditional (“yes, but only if…”), it’s usually a counteroffer instead.

Does Acceptance Have To Be In Writing?

Not always. In many cases, a contract can be formed through:

• Email acceptance (“Approved, go ahead”);
• Text or messaging apps (depending on context and clarity);
• Signing a quote, proposal, or agreement;
• Conduct (for example, starting work, making payment, taking delivery).

For small businesses, acceptance by conduct is one of the biggest risk areas. You might think you’re “starting the project while we sort the paperwork,” but legally, that can be enough to confirm contract formation - sometimes on terms you didn’t intend.

When Exactly Is The Contract Formed?

This depends on how the offer is made and how acceptance is communicated. As a general rule, the contract is formed when acceptance is communicated to the offeror (the party making the offer), unless the offer specifies a different method.

From a practical standpoint, you should assume the “contract moment” could occur when:

• the customer signs and returns the quote;
• the customer emails “accepted” (even without signing);
• you confirm in writing that you accept their revised terms; or
• both parties start performing (work starts, deposits paid, goods shipped).

Can You Withdraw An Offer?

Usually, yes - an offer can generally be withdrawn before it’s accepted, as long as the withdrawal is communicated.

However, be careful with situations where:

• you’ve said the offer is open for a set period (e.g. “valid for 14 days”) - this doesn’t automatically make it legally irrevocable, but it can create commercial and legal risk if you try to withdraw;
• the other party has relied on your offer in a way you’ve encouraged; or
• there’s an agreed process that’s “subject to contract” or governed by a formal negotiation document.

Because timing can get messy quickly, it’s worth being disciplined about your process: “offer sent”, “offer accepted”, “work begins”.

The Other Building Blocks Of Contract Formation (And How To Protect Your Business)

Offers and counteroffers are the headline issues, but contract formation typically involves a few other legal building blocks too. These can be the difference between a contract that’s enforceable and one that’s a nightmare to rely on.

Consideration: Each Side Must Give Something

Most contracts require consideration - meaning each party gives something of value. In a business contract, that’s usually straightforward (money in exchange for goods/services).

If you’re changing a deal mid-stream (for example, discounting a price, extending credit, or changing scope), it’s a good idea to document what each side is giving up or gaining. Otherwise, you can end up in an argument about whether the variation is enforceable.

Intention: Is This A Business Deal Or A Casual Chat?

In commercial settings, intention to create legal relations is usually assumed - but you can still reduce uncertainty by being clear about:

• when negotiations are non-binding (e.g. “subject to contract”);
• when a document is binding immediately (e.g. signed service agreement); and
• what happens if you start work before signing.

Certainty: Are The Key Terms Actually Clear?

If the deal is too vague, you risk disputes about what was agreed - or, in some cases, difficulty enforcing it.

For small businesses, clarity usually means nailing down:

• Scope (what’s included and what’s excluded);
• Price (fixed fee vs hourly vs estimate; whether GST is included; expenses);
• Timing (delivery dates, milestones, what counts as a delay);
• Payment terms (deposit, progress payments, late fees, suspension rights);
• Variations (how changes are quoted and approved);
• Liability and risk (caps, exclusions, insurance expectations); and
• Termination (how either party can end the relationship).

If you’re thinking about how to build workable termination rights into your agreements, it’s helpful to understand the practical and legal issues around terminating a contract (because ending a deal incorrectly can create its own dispute).

Misrepresentation: “Sales Talk” That Creates Legal Risk

During negotiations, it’s common to make statements about performance, timelines, costs, or results. If those statements are inaccurate and the other party relies on them, you can end up dealing with misrepresentation claims.

From a small business perspective, this often pops up when:

• a quote assumes certain inputs (like customer-provided content or access) but that isn’t stated;
• lead times are expressed too confidently without allowances for supply chain delays; or
• you promise outcomes that depend on external factors (like platform approvals or third-party contractors).

A practical way to manage this risk is to put assumptions and exclusions in writing in your quote or scope of work, and avoid making guarantees you can’t control.

Do You Need A Written Contract (Or A Deed)?

Many contracts can be oral, but written contracts are far easier to prove and enforce - especially once money is on the line.

There are also situations where you might use a deed rather than a standard agreement (for example, some formal settlement arrangements, guarantees, or certain variations). If you’re unsure which format fits your situation, it helps to understand the difference between a deed and an agreement.

Signing And Electronic Acceptance

Signing isn’t always required for contract formation, but it’s still one of the cleanest ways to reduce arguments about terms.

If you want a simple internal rule: don’t start work until you have something in writing that clearly confirms scope, price, and timing - even if it’s a short-form agreement or signed quote while a longer contract is being finalised.

And if your business uses digital processes, make sure your “acceptance” steps (click-to-accept, email approvals, e-signing platforms) line up with your legal documents - so there’s no gap between what your customer thinks they accepted and what you can actually enforce.

Key Takeaways

• Contract formation can happen quickly in New Zealand - even through emails, texts, or conduct (like starting work or making payment).
• An offer is a clear promise to be bound if accepted; a counteroffer usually rejects the original offer and replaces it with new terms.
• Be careful during negotiations: “Yes, but…” responses are often counteroffers, not acceptance.
• The “battle of the forms” is a common business risk when both sides send their own terms; your process should make it clear which document governs the deal.
• Strong contract formation isn’t just about offer/acceptance - you also need clear scope, price, timelines, and protections against disputes (including misrepresentation and termination issues).
• Whenever possible, get the key terms in writing before you start work, and keep your signing/acceptance process consistent across quotes, purchase orders, and service agreements.

Disclaimer: This article is general information only and not legal advice. For advice about your specific situation, get in touch with a lawyer.

If you’d like help tightening up your quoting process, drafting or reviewing your contracts, or making sure you’re protected from day one, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.