How To Write A Contract In New Zealand: Key Clauses To Include

If you run a small business, contracts aren't just "paperwork" - they're how you protect your cashflow, set expectations, and keep projects moving when something changes (or goes wrong).

And if you've been Googling how to write a contract, you're not alone. Most business owners start with good intentions: put something in writing, keep it simple, and avoid awkward conversations later. The problem is that a vague or incomplete contract can create bigger disputes than having no contract at all.

In this guide, we'll walk you through how to write a contract in New Zealand, what makes a contract enforceable, and the key clauses that most businesses should include (whether you're selling services, supplying products, hiring contractors, or partnering with another business).

What Makes A Contract Legally Binding In New Zealand?

Before you start drafting, it helps to know what "counts" as a contract.

In New Zealand, a contract can be written, verbal, or a mix of both. But if you want something you can actually rely on (and prove later), a written contract is usually the safest move.

In simple terms, most legally binding contracts include:

• An offer (one party proposes clear terms)
• Acceptance (the other party agrees to those terms)
• Consideration (something of value is exchanged - usually money for goods/services)
• Intention to create legal relations (it's meant to be enforceable, not a casual promise)
• Certainty of terms (the key obligations are clear enough to follow)

Even if those pieces exist, a contract can still be challenged if there are issues like misleading statements, unfair pressure, or the terms are too uncertain to apply in practice.

Also, if your contract is for business-to-consumer sales, you need to make sure your terms line up with consumer law obligations (more on that below).

How To Write A Contract: Start With The "Commercial Deal"

When people think about how to write a contract, they often jump straight into legal wording. But the best contracts start with the commercial reality:

What are you actually agreeing to - and what could realistically go wrong?

Before drafting clauses, get clear on:

• Who is contracting (individual, sole trader, company, trust?)
• What is being provided (goods, services, access, licence, deliverables)
• When it will happen (timeframes, milestones, expiry)
• How much it costs (pricing, deposits, variations, expenses)
• How risk is managed (delays, defects, non-payment, scope changes)

This is also the stage where many businesses realise they need the right document type. For example, you might need a full Service Agreement rather than a short email acceptance, especially if you're delivering ongoing work, dealing with IP, or relying on subcontractors.

Once you've mapped the deal, the contract becomes much easier to structure - and much harder to misunderstand.

Key Clauses Every Business Contract Should Include

There's no one-size-fits-all contract, but there are clauses that show up again and again because they deal with the most common business risks.

Below are the "core" clauses we usually recommend small businesses consider, along with why each one matters.

1) Parties, Definitions And Interpretation

Start by correctly identifying the parties. This sounds basic, but it's a common enforcement issue.

• If you trade through a company, make sure the company (not you personally) is the contracting party.
• If the other side is a company, use the correct legal name (and ideally the NZBN/registration details).

Then include:

• Definitions for key terms (e.g. "Services", "Deliverables", "Confidential Information").
• Interpretation rules (e.g. headings don't affect meaning, singular includes plural).

These sections reduce ambiguity and help the rest of the contract read clearly.

2) Scope Of Work (What You're Actually Delivering)

This is one of the most important parts of any contract - and one of the easiest places for disputes to start.

Your scope clause should clearly cover:

• What's included (specific deliverables or outcomes)
• What's excluded (what you are not doing)
• Assumptions (what you rely on the client/customer to provide)
• How changes are handled (variations)

If your scope isn't clear, you'll often see "scope creep" - where the other party assumes extra work is included, and you assume it's a paid variation.

Tip: if you do project-based or milestone work, attach a statement of work (SOW) or proposal as a schedule, and make it clear it forms part of the contract.

3) Fees, Invoicing, And Late Payment

If you want a contract to protect your cashflow, your payment terms need to be specific.

Consider including:

• Pricing structure (fixed fee, hourly rate, retainer, subscription)
• When you invoice (upfront, milestone-based, weekly/monthly)
• Payment timeframe (e.g. 7 days, 14 days)
• Deposit requirements (and when it becomes non-refundable, if applicable)
• Late fees/interest (if you plan to charge it)
• Your right to pause work for non-payment

Also think about the practical realities: if you're supplying goods, do you need to retain title until payment is made? If you're doing services, do you need to withhold final deliverables until invoices are paid?

4) Timeframes, Delays, And Client Responsibilities

Timeframes are a common pain point - especially where your work depends on the other party providing information, approvals, or access.

Your contract should spell out:

• Start date and end date (or how the end date is determined)
• Key milestones and due dates
• What happens if the customer/client causes delays
• Any "time is of the essence" wording (only if you really need it)

For service-based businesses, it's also helpful to include client responsibilities like:

• Providing accurate information on time
• Reviewing deliverables and giving feedback by certain dates
• Ensuring they have authority to approve decisions

This can make a huge difference if a job runs late and a client tries to blame you for delays that were out of your control.

5) Term And Termination (How The Relationship Ends)

Every contract should cover how it ends - even if you expect the relationship to be long and happy.

Key points to include:

• Term (ongoing, fixed term, or until completion)
• Termination for convenience (ending without fault, usually with notice)
• Termination for cause (ending for breach, non-payment, insolvency, etc.)
• Exit obligations (handover, final payment, return of materials)
• What survives termination (confidentiality, payment obligations, IP, liability limits)

It can also help to say what happens to work-in-progress and pre-paid amounts if the contract ends early.

6) Warranties, Quality Standards, And Acceptance

Warranties are promises about quality, performance, or compliance. They matter because they set expectations and can define what happens when something isn't right.

Depending on what you do, you might include warranties around:

• Quality of goods or services
• Professional skill and care
• Compliance with laws and standards
• That deliverables won't infringe someone else's IP

If you deliver work in stages, it's smart to include an acceptance process (how the client signs off, timeframes to raise defects, what happens if they don't respond).

For consumer-facing businesses, be careful not to "contract out" of legal guarantees that can't be excluded. The Consumer Guarantees Act 1993 and Fair Trading Act 1986 are key here - your terms should support compliance, not accidentally breach it.

7) Limitation Of Liability (Protecting Your Business If Something Goes Wrong)

Most small businesses can't afford unlimited liability. A limitation of liability clause is how you cap risk to something commercially manageable.

This clause often covers:

• A cap on liability (e.g. fees paid in the last X months, or a fixed dollar amount)
• Excluding certain loss types (e.g. indirect or consequential loss)
• Time limits for bringing claims (in some cases)
• Clarifying what you're not liable for (e.g. client-supplied information)

These clauses need to be drafted carefully. If you go too far, you can end up with a clause that's unenforceable, or that creates problems under unfair contract terms rules (particularly in standard form arrangements).

In New Zealand, the unfair contract terms (UCT) regime under the Fair Trading Act 1986 can apply to standard form consumer contracts, and it may also apply to certain standard form small trade contracts. If you're not sure whether your standard terms are caught, it's worth getting advice before you lock your template in.

If you're trying to work out the right approach for your business, it can be worth getting advice on limitation of liability before you lock your template in.

8) Indemnities (When One Party Covers The Other Party's Losses)

An indemnity is a promise to cover certain losses or claims - commonly where one party's actions could expose the other to third-party risk.

Examples include indemnities for:

• IP infringement (e.g. if you supply designs or content)
• Breaches of law (e.g. privacy, health and safety, advertising)
• Damage caused by contractors on-site
• Misuse of deliverables or unauthorised modifications

Indemnities can significantly shift risk, so they should match the reality of who controls that risk.

9) Intellectual Property (Who Owns What You Create)

IP clauses are essential for many service businesses - especially if you create designs, software, content, branding, training material, or tailored systems.

Common points to address:

• Background IP: what each party owned before the contract
• New IP: what's created during the engagement
• Assignment vs licence: whether ownership transfers, or the client just gets permission to use it
• Portfolio/promotional use: whether you can show the work in your marketing

This is also where contractors can be a hidden risk: paying someone to create something doesn't automatically mean you own the IP. If you engage freelancers or external specialists, a properly drafted Sub-Contractor Agreement can help ensure your business actually owns (or can use) what you've paid for.

10) Confidentiality And Privacy

Most business relationships involve some confidential information - pricing, supplier details, customer lists, systems, or product plans.

A confidentiality clause should generally cover:

• What counts as confidential information
• How it can be used (only for the contract purpose)
• Who it can be shared with (e.g. staff, advisers, subcontractors)
• How long confidentiality obligations last (often beyond termination)

If you collect personal information (customer details, mailing lists, employee data), you also need to think about privacy compliance. A contract won't replace a Privacy Policy, but your contract should align with your real-world privacy practices under the Privacy Act 2020.

11) Dispute Resolution (How You Handle Conflict Without Burning The Relationship)

Disputes happen - but a good contract can stop a disagreement turning into a full-scale blow-up.

Many businesses use a staged process, such as:

• Good faith negotiation between decision-makers
• Mediation (often before court proceedings)
• Escalation pathways (e.g. arbitration, courts, or tribunals depending on the relationship)

You can also include practical mechanics like where notices must be sent, and how quickly parties must respond.

12) General "Boilerplate" Clauses That Still Matter

These clauses are sometimes treated as afterthoughts, but they can really matter if the relationship changes.

• Entire agreement (the written contract overrides prior discussions)
• Variation (changes must be in writing and signed)
• Assignment (whether either party can transfer the contract)
• Force majeure (what happens if events outside control prevent performance)
• Governing law and jurisdiction (usually New Zealand)
• Notices (how formal communications must be delivered)

They're also the clauses that can quietly conflict with your day-to-day communications (for example, if you vary scope by email but your contract says variations must be signed). It's better to align the contract with how you really operate.

Common Mistakes When Writing Contracts (And How To Avoid Them)

Most contract problems aren't caused by bad intentions - they come from rushed drafting, generic templates, or assumptions that "we'll sort it out later".

Here are some common mistakes we see small businesses make when working out how to write a contract:

• Using a template that doesn't match the deal (e.g. a simple quote acceptance for a complex project)
• Not defining the scope properly, leading to unpaid extra work
• Leaving payment terms vague ("payment due promptly" is hard to enforce)
• Forgetting IP ownership, especially with contractors or creative work
• Overreaching on liability exclusions, making the clause less likely to hold up
• Relying on verbal promises that aren't captured in the "entire agreement" document
• Copying clauses from other industries that don't reflect your actual risks

If your contract is meant to be used repeatedly (for example, your standard client agreement), it's worth getting it reviewed and tailored so it fits your business model and your actual workflow.

Do You Need A Different Contract Depending On The Relationship?

Yes - and this is where many businesses get caught out.

A good contract isn't just about "having something signed". It's about choosing the right structure for the relationship and risk.

Here are a few common examples:

• Client services: typically a service agreement, with scope, variations, payment, and IP clauses.
• Supply of goods: sale of goods terms (pricing, delivery, defects/returns, title and risk).
• Engaging contractors: a contractor agreement that covers deliverables, IP, confidentiality, and who's responsible for tax and insurance (often supported by a Contractor Agreement). Tax treatment can be fact-specific, so consider checking with an accountant or Inland Revenue (this isn't tax advice).
• Hiring employees: an employment agreement that meets employment law requirements (and clearly sets expectations), usually through an Employment Contract.
• Business partnerships or co-founders: a partnership agreement or shareholders agreement that sets out decision-making, profit share, exits, and dispute pathways.

It can be tempting to use one "master template" for everything, but that often leads to missing clauses in the relationships that matter most (especially where money, IP, or responsibility is shared).

Key Takeaways

• If you're learning how to write a contract, start by getting clear on the commercial deal first - who's involved, what's being delivered, how you'll be paid, and what could realistically go wrong.
• A contract is more enforceable when the key terms are certain, written down clearly, and matched to the real working relationship (not a generic template).
• Most business contracts should include clauses covering scope, fees and invoicing, timeframes, termination, warranties, limitation of liability, indemnities, IP, confidentiality, and dispute resolution.
• Consumer-facing businesses need to ensure contract terms align with the Fair Trading Act 1986 and Consumer Guarantees Act 1993, and businesses handling personal information should consider the Privacy Act 2020.
• Contracts should be tailored - the right document for a contractor, employee, supplier, or client relationship will look different, even if some clauses overlap.
• Getting your contracts right from day one can save you major time, money, and stress later - especially when a job changes scope, a payment is late, or a relationship ends early.

If you'd like help getting a contract drafted or reviewed for your business, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.