How Long Does A Verbal Agreement Last In NZ Contract Law?

You’ve probably had it happen in business: you agree to a job over the phone, lock in a supply arrangement with a handshake, or tell a contractor “yes, go ahead” in a quick meeting - and then later, something changes.

That’s when the big question comes up: how long does a verbal agreement last, and can you actually enforce it?

In New Zealand, a verbal agreement can be just as legally binding as a written contract. But the tricky part for small businesses isn’t usually whether a verbal agreement can be enforceable - it’s how you prove what was agreed, what the terms were, and what happens when the agreement didn’t clearly specify a time period.

Below, we’ll break down how verbal agreements work under NZ contract law, what determines their “duration”, the limitation periods that affect enforcement, and the practical steps you can take to protect your business from day one.

Are Verbal Agreements Legally Binding In New Zealand?

Yes - in many situations, a verbal agreement is legally binding in New Zealand.

From a contract law perspective, the key question is usually not “was it written down?”, but whether a valid contract was formed. In plain terms, a contract generally exists where there is:

• An offer (e.g. “We can deliver 200 units for $X by Friday”)
• Acceptance (e.g. “Sounds good, let’s do it”)
• Consideration (something of value exchanged - usually payment for goods/services)
• An intention to create legal relations (in business contexts, this is usually assumed)
• Certainty of terms (enough detail to know what each side must do)

So if you and the other party clearly agreed on the key points (like scope, price, timelines, and deliverables), then the fact it was verbal doesn’t automatically make it “informal” or “optional”.

That said, verbal agreements can be much harder to manage when things go wrong - because disputes often become a “your word vs their word” situation.

If you want your contracts to be enforceable without the stress of reconstructing conversations later, it’s usually worth putting key arrangements into a properly drafted Service Agreement (or at least confirming the agreed terms in writing straight away).

How Long Does A Verbal Agreement Last?

The length of a verbal agreement isn’t determined by the fact it’s verbal - it’s determined by the terms of the agreement, just like a written contract.

In practice, a verbal agreement can last:

• Until a specific date (e.g. “This arrangement runs until 30 June”)
• Until a specific task is completed (e.g. “You’ll build the website and we’ll pay on delivery”)
• Ongoing (e.g. “You’ll supply us stock weekly at $X per unit”)

The issue is that verbal agreements often don’t clearly address duration - which is where misunderstandings start.

If You Agreed On A Fixed Term

If the verbal agreement included a clear start and end date, it will generally last for that period. For example:

• You verbally engage a marketing consultant for a 3-month campaign.
• You agree to rent equipment for two weeks.
• You agree a contractor will provide services until the project is finished.

Even if it wasn’t written down, the parties may still be expected to honour the fixed term - unless there’s a lawful basis to end it early (for example, a serious breach).

If There Was No End Date (Ongoing Verbal Agreement)

If there was no clear end date, the verbal agreement may be treated as an ongoing agreement. In that case, it often continues unless and until:

• both parties agree to end it, or
• it’s ended on notice (where the arrangement is properly characterised as terminable on notice), or
• it ends because its purpose is completed or it becomes impossible to perform.

In practice, many ongoing commercial arrangements are treated as terminable by giving reasonable notice - but what’s “reasonable” (and whether a notice term is implied at all) depends on the circumstances.

For a small business, relevant factors can include:

• how long the arrangement has been running
• how frequently services are delivered (daily/weekly/monthly)
• whether the other party needs time to replace you (or you need time to replace them)
• industry norms
• whether your arrangement involved upfront investment (e.g. buying stock/equipment to service the relationship)

As an example, if you have a long-standing supply arrangement and the supplier suddenly cuts you off with no warning, you may have arguments around breach - but the details matter a lot, and evidence is key.

If The Verbal Agreement Was “Trial” Or “Until Further Notice”

Businesses often make verbal agreements that sound flexible, like:

• “Let’s trial this for a bit and see how it goes.”
• “We’ll do this arrangement until further notice.”
• “We’ll keep working together as long as you’re available.”

These aren’t automatically invalid - but they can create uncertainty.

If the parties can’t agree on what “a bit” means, a court may look at what’s reasonable in the circumstances and what the parties did in practice (for example, did invoices go out weekly, was there an expectation of ongoing work, did either party rely on the arrangement to make business decisions?).

If you want to avoid disputes, a short written document can make a huge difference - even a simple contract (tailored to your business) or clear written terms confirmed by email. If you’re not sure how to structure your commercial arrangements, getting help with Contract Drafting early on can save you time, money, and awkward conversations later.

What’s The Time Limit To Enforce A Verbal Agreement In New Zealand?

This is where people often mix up two different ideas:

• How long the agreement lasts (its duration / termination), and
• How long you have to take legal action if something goes wrong (limitation periods).

Even if an agreement has ended, you might still be able to enforce rights that arose during it - but only if you act within the relevant time limits.

Limitation Periods (The “Deadline” For Bringing A Claim)

In New Zealand, limitation periods are mainly governed by the Limitation Act 2010.

The limitation rules can be technical, and they depend on the type of claim and the facts. However, many civil claims (including many contract claims) are commonly subject to a 6-year primary limitation period (often running from the act or omission on which the claim is based), with additional rules that can sometimes extend time in certain cases (for example, where loss is discovered later) and a “longstop” that can still apply.

For small businesses, the key point is this: don’t assume you can leave it for years and deal with it later. If you suspect a breach, non-payment, or misrepresentation, it’s best to get advice early while evidence is still available and the timeline is clear.

If you’re already in a dispute about what was agreed (especially where emails, invoices, or scope changes are involved), getting a lawyer to review the documents and your position can help you decide next steps quickly. In many cases, a Contract Review can clarify where you stand before you escalate the issue.

Why Verbal Agreements Can Be Riskier With Time

Even where you’re within time limits legally, enforcing a verbal agreement can become harder over time because:

• people forget what was said
• staff leave (and the decision-makers disappear)
• records get lost
• businesses change systems (and old messages are no longer accessible)

So from a commercial risk perspective, acting early is usually the best move - even if you ultimately resolve things amicably.

When Do You Need A Contract In Writing?

Even though a verbal agreement can be binding, some types of arrangements are either legally required to be in writing or are so high-risk that relying on a verbal conversation is asking for trouble.

Here are a few scenarios where small businesses should be particularly cautious.

High-Value Or High-Impact Commercial Arrangements

If the deal would meaningfully affect your revenue, cashflow, or reputation, get it in writing.

This includes things like:

• major supply arrangements
• exclusive distribution relationships
• long-term service engagements
• outsourcing key functions (e.g. IT, marketing, logistics)

Even if you trust the other side, the real risk is misunderstanding - not bad intentions.

Scope Changes And Ongoing Projects

A common small business dispute isn’t whether the project existed - it’s what was included.

If you’re doing project work (websites, renovations, branding, consulting), you should be documenting scope, exclusions, and variation processes. Otherwise you can end up in an expensive argument about what “was obviously included”.

Where work is changing during delivery, you’ll often want a clear written variation (even a short one). In more formal situations, a Deed of Variation can help properly record changes so there’s no confusion later.

Standard Customer Sales And Ongoing Client Work

If you regularly sell goods or services, one of the best ways to reduce reliance on ad-hoc verbal arrangements is to set up standard written terms.

For example, strong Terms of Trade can help cover things like:

• payment terms and interest on late payments
• delivery timing and risk transfer
• returns and remedies (where applicable)
• limits on liability (where lawful)
• how disputes are handled

This doesn’t just protect you legally - it also makes your business look more professional and consistent, which helps with customer trust.

Settling A Dispute

If you’re resolving a disagreement about a verbal agreement (or anything else), a “quick handshake settlement” can feel tempting - especially if you just want to move on.

But if the settlement itself isn’t properly documented, you can end up with round two of the same dispute.

In many cases, a Deed of Settlement helps put the resolution beyond doubt, including releases, confidentiality (if needed), and clear payment obligations.

How Can You Prove A Verbal Agreement If There’s A Dispute?

This is usually the make-or-break issue.

When a verbal agreement is disputed, the legal question often becomes: what evidence supports that the agreement existed and what its terms were?

The good news is that proof doesn’t have to be a signed contract. Courts and dispute resolution processes can consider a wide range of evidence - and small businesses often have more than they realise.

Common Evidence That Can Support A Verbal Agreement

• Emails and messages confirming the arrangement (even if sent after the conversation)
• Quotes, invoices, and purchase orders showing pricing and deliverables
• Bank records showing payments consistent with an agreed price
• Work product (deliverables, drafts, project files, time sheets)
• Meeting notes (even internal notes can help support your version of events)
• Witnesses (someone else heard the agreement or was involved)
• Course of dealing (how you’ve historically worked together)

Sometimes, what matters most is what the parties did after the conversation. If both sides acted as though there was a contract - for example, one side performed work and the other side accepted it - that conduct can help demonstrate an agreement existed.

A Practical “Confirm It In Writing” Habit (That Doesn’t Slow You Down)

If your business moves fast, you might not want to pause for signatures every time you agree on something.

A practical middle ground is to build a habit like this:

• After the call/meeting, send a short email: “Just confirming our agreement: [scope], [price], [timeframe], [key assumptions]. Let me know today if anything differs.”
• Attach (or link to) your standard terms, if you use them.
• Keep everything in one thread, so the timeline is clear later.

This approach doesn’t replace a tailored contract for major deals - but for everyday transactions, it can dramatically reduce disputes about “what was said”.

What If The Other Party Says “That’s Not What We Agreed”?

This is where many small business owners get stuck. You might feel like you’re negotiating reality - and it’s frustrating.

When this happens, you should focus on:

• identifying the key terms in dispute (price, scope, deadline, exclusivity, payment timing)
• collecting evidence fast (before it disappears)
• not making admissions in writing that undermine your position
• getting advice early on strategy (commercial settlement vs formal enforcement)

Often, disputes about verbal agreements can be resolved commercially - but it’s much easier to negotiate confidently when you understand your rights and risks upfront.

Key Takeaways

• A verbal agreement can be legally binding in New Zealand, as long as the essential contract elements are present (offer, acceptance, consideration, intention, and certainty).
• How long a verbal agreement lasts depends on what was agreed: it may be for a fixed term, until a task is completed, or ongoing unless and until it’s validly terminated.
• If there’s no clear end date, termination can come down to whether the arrangement is terminable on notice and, if so, what counts as reasonable notice in your particular business context.
• There are time limits on enforcing contract rights (limitation periods), so it’s wise to get advice early if there’s a breach or non-payment.
• Some situations are too risky to rely on verbal conversations alone - especially high-value deals, changing project scope, or dispute settlements.
• The biggest weakness of a verbal agreement is usually proof, so confirming key terms in writing (even by email) can significantly strengthen your position.

If you’d like help documenting your agreements properly or dealing with a dispute about a verbal agreement, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.