Good Faith In New Zealand Business Contracts: Meaning And Protection

When you’re running a small business, “good faith” can sound like a feel-good concept - something you either have or you don’t.

But in New Zealand business contracts, good faith can have real legal and commercial consequences. It can shape how you negotiate, how you perform your obligations, how you handle changes, and how you end a relationship when things go sideways.

The tricky part is that good faith isn’t a simple box to tick. In some situations it may be required by the way the law operates in context, in others it’s created (and defined) by what you agree to in your contract, and sometimes it’s more about risk management and keeping a deal enforceable and workable.

Below, we’ll break down what “good faith” generally means in a business-to-business (B2B) context, when it matters most, and practical steps you can take to protect your business from day one.

What Does “Good Faith” Mean In A Business Contract?

In plain English, acting in good faith usually means dealing with the other party honestly, fairly, and in a way that’s consistent with the purpose of your agreement.

For business owners, that tends to translate into behaviour like:

• Being honest (not misleading the other party, and not letting them run with a false assumption you created).
• Not acting opportunistically (for example, exploiting loopholes to undermine the deal’s commercial purpose).
• Co-operating where the contract expects it (for instance, giving approvals, access, or information needed for the other party to perform).
• Exercising rights for a proper purpose (not using discretion under the contract to punish the other party or force a better bargain).
• Having genuine discussions where the contract requires negotiation (for example, to vary pricing, timeframes, or scope).

Importantly, good faith does not mean:

• you must always put the other party’s interests ahead of your own;
• you can’t negotiate hard;
• you have to accept a bad deal to be “fair”.

You can still protect your commercial position. The idea is that you should do it transparently and consistently with what you’ve agreed to, rather than through surprise tactics or sharp practice.

If you’re negotiating terms and you’re not sure what you’re actually committing to, it helps to sanity-check the basics first - including what makes a contract legally binding - so you know when discussions move from “chatting” to “contracting”.

Is There A General Duty Of Good Faith In New Zealand Contracts?

This is where business owners often get caught out: New Zealand contract law doesn’t apply a single, universal “good faith duty” to every contract in every situation.

That doesn’t mean good faith is irrelevant - it just means the legal position is highly context-specific, and can depend on things like:

• what your contract says (and what it doesn’t say);
• the nature of the relationship (one-off transaction vs long-term collaboration);
• whether one party has a discretion that affects the other;
• how the negotiations were conducted; and
• any relevant legislation (consumer, fair trading, industry-specific rules, etc.).

In practice, “good faith” issues often show up in disputes as arguments about:

• interpretation (what the contract really means, in context);
• misleading conduct during negotiations;
• implied terms (whether the law implies an obligation to cooperate or to exercise powers reasonably);
• repudiation (one party effectively walking away from the deal); and
• unfair leverage or improper use of contractual rights.

So, instead of assuming “good faith will protect us”, the safer approach is to treat good faith as something you design into your commercial arrangements (and your internal processes) wherever it’s relevant.

When Does Good Faith Matter Most For Small Businesses?

Good faith tends to matter most in contracts where the relationship is ongoing, flexible, or requires both sides to work together over time.

Here are common scenarios where good faith becomes a real pressure point for small businesses.

1) Long-Term Supplier Or Service Relationships

If your agreement runs for months or years (rather than a one-off purchase), there are usually moving parts - delivery schedules, changing costs, scope changes, quality issues, and operational dependencies.

This is where disputes can arise around whether one party failed to cooperate, refused reasonable requests, or used a strict reading of the contract to derail the relationship.

2) Contracts With Discretion Or “We Decide” Clauses

Many contracts give one party discretion, for example:

• approving deliverables;
• setting or adjusting KPIs;
• deciding whether to renew;
• deciding whether a breach is “material”; or
• setting requirements for compliance and reporting.

Discretion is useful - but it’s also where accusations of “bad faith” often land, especially if you use the discretion unpredictably or to force the other party into concessions.

3) Joint Ventures, Partnerships, And Founder Relationships

When you’re in business with other people, good faith issues often arise less from the main “deal terms” and more from decision-making, access to information, and how power is exercised.

If you’re operating through a company, the relationship between owners is usually safer when it’s backed by a clear Shareholders Agreement and aligned with your Company Constitution - especially where there are minority shareholders or different roles (e.g. one person funds, one person runs the operations).

4) Pre-Contract Negotiations And Sales Processes

A lot of good faith risk happens before you sign anything.

If you oversell outcomes, fail to disclose key limitations, or let a customer rely on assumptions that aren’t correct, you may end up with legal exposure for misleading conduct or false statements - even if the contract has disclaimers.

This is why it’s worth understanding the boundary between acceptable sales talk and misrepresentation, particularly where the other party is relying on your expertise.

5) Variations, Renewals, And Price Increases

Many small businesses grow by iterating: increasing prices, changing scope, switching tools, upgrading deliverables, or renewing agreements.

Where a contract requires you to negotiate changes (or says you will “act reasonably”), good faith is often the yardstick used to assess whether you genuinely engaged - or whether you effectively issued an ultimatum.

How Do You Build Good Faith Into Your Contracts (Without Losing Commercial Control)?

The best way to protect your business is to be deliberate. Good faith shouldn’t be a vague idea - it should be reflected in the terms you agree to and the way you run the relationship.

Here are practical steps that usually make the biggest difference.

1) Use Clear Definitions And Clear Processes

If your contract uses terms like “reasonable”, “promptly”, “to the other party’s satisfaction”, or “good faith negotiations”, consider defining what that means in your context.

For example:

• What timeframes apply for approvals?
• What happens if one side doesn’t respond?
• What information must be provided to support a price review?
• What evidence is needed to claim a delay is “outside reasonable control”?

The more your contract relies on subjective judgement, the more likely it is that someone will later argue you exercised it in bad faith.

2) Draft A Practical Dispute Resolution Clause

Good faith disputes often escalate because there’s no agreed pathway to de-escalate.

A well-drafted dispute resolution clause might require steps like:

• notice of dispute with details;
• a meeting between decision-makers;
• mediation before court action (with exceptions for urgent injunctions or unpaid invoices); and
• rules about continuing performance while the dispute is being resolved (where appropriate).

This doesn’t just “sound nice” - it can reduce downtime, preserve relationships, and stop legal costs from blowing out.

3) Include Good Faith Only Where You Mean It

Some businesses add “good faith” everywhere as a standard line. That can backfire if you’ve created a broad obligation you can’t realistically comply with, or that creates uncertainty about your rights.

A better approach is to:

• limit any good faith obligation to specific processes (like negotiating a variation or renewal);
• be clear that each party may act in their own interests (while still complying with the contract); and
• avoid open-ended commitments that undermine your ability to enforce deadlines, payment terms, or quality standards.

This is one of those areas where a tailored draft matters - and why businesses often choose a proper contract review before signing, instead of relying on a template that wasn’t built for their deal.

4) Be Careful With Entire Agreement And Disclaimer Clauses

Many business contracts try to “close the door” on what was said during negotiations by using:

• entire agreement clauses (the written contract is the whole deal); and
• non-reliance clauses (the other party didn’t rely on representations).

These clauses can be helpful, but they’re not a magic shield if your sales process is sloppy or misleading. If you want protection, you still need good internal habits:

• put key promises in writing (and in the contract or scope documents);
• document assumptions and exclusions;
• avoid “guarantees” you can’t control; and
• make sure marketing claims match what you’ll actually deliver.

5) Keep Written Records Of Key Decisions

When a dispute hits, good faith is often judged by “who said what, when”.

You don’t need to turn every call into a formal letter, but you should have a habit of confirming the important stuff in writing:

• variations to scope, timeframes, and pricing;
• approvals and sign-offs;
• issues raised and agreed fixes;
• delivery delays and reasons; and
• requests for information and responses.

This is one of the simplest ways to protect your business if the other party later claims you “agreed” to something you didn’t.

What If The Other Party Doesn’t Act In Good Faith?

If you suspect the other party is acting in bad faith, it’s tempting to respond emotionally or try to “outsmart” them.

But the best commercial outcome usually comes from staying structured and evidence-led. Here’s a practical approach.

1) Identify The Specific Conduct (Not Just The Vibe)

“They’re acting in bad faith” is a conclusion. You’ll get further by identifying what they’re actually doing, for example:

• refusing to approve deliverables without a clear reason;
• changing requirements late without a variation;
• withholding information needed for performance;
• making threats to terminate to force a discount; or
• inventing breach allegations to escape the deal.

Once you have this clearly documented, you can map it to the contract terms and any applicable legal obligations.

2) Use The Notice And Dispute Process Properly

If your contract has notice requirements (and many do), follow them carefully. A casual email might not be a valid notice, which can weaken your position later.

Where the relationship is salvageable, taking a calm “let’s resolve this properly” approach can also help you demonstrate your own good faith - which matters if things end up in mediation or court.

3) Be Strategic About Termination

Ending a contract is often where good faith arguments explode, especially if one party claims the other terminated opportunistically.

Before you terminate, you generally want to check:

• Do you have a clear termination right (for breach, insolvency, convenience, etc.)?
• Have you met any prerequisites (notice, cure period, escalation)?
• Are you at risk of terminating wrongly (which could itself be a breach)?
• Do you need to preserve evidence, secure IP, or manage handover?

Because the stakes can be high, it’s worth getting advice before taking steps to terminate a contract, especially if there are unpaid invoices, customer deliverables, or reputational risks in play.

4) Consider Settlement (Without Giving Away Your Rights)

Sometimes the most “commercial” solution is to negotiate a clean exit: payment terms, a transition plan, mutual releases, and confidentiality.

This is often documented in a Deed of Settlement, which can help you close the dispute with clarity and avoid it resurfacing later.

Even where you’re confident you’re “right”, settlement can still be a smart business decision - especially if the alternative is months of distraction and legal costs.

Key Takeaways

• In business contracts, good faith generally means acting honestly, fairly, and consistently with the purpose of the agreement - rather than using loopholes or tactics that undermine the deal.
• Because New Zealand doesn’t treat good faith as a one-size-fits-all duty in every contract, it’s usually safer to build practical protections into your contract wording and day-to-day processes.
• Good faith issues commonly arise in long-term relationships, contracts with discretion, negotiations about variations or renewals, and disputes about termination.
• You can reduce risk by using clear definitions, solid dispute resolution clauses, careful drafting around discretion, and keeping written records of key decisions.
• If the other party acts in bad faith, focus on specific conduct, follow the contract notice process, and get advice before making high-stakes moves like termination or public allegations.
• When the relationship can’t be saved, a structured settlement can help you exit cleanly and protect your business going forward.

If you’d like help reviewing or drafting a contract so you’re protected from day one (including good faith clauses, dispute processes, and termination rights), you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.

Note: This article is general information only and isn’t legal advice. Good faith obligations can vary depending on the contract and the circumstances - get advice on your specific situation.