Arm’s Length Transactions In New Zealand: What They Mean For Businesses

If you run a small business, you’ll probably do deals with people you already know at some point. It might be a loan from a director to help cash flow, a supplier arrangement with a family member, or your company leasing a space you personally own.

Those situations can be completely legitimate. But they can also create legal, tax, and “this doesn’t feel fair” problems if the transaction isn’t handled properly.

That’s where arm’s length transactions come in.

An arm’s length transaction is basically a deal done on commercial terms, as if the parties were unrelated and negotiating in their own best interests. In New Zealand, understanding arm’s length transactions matters because it can affect everything from tax outcomes and director duties to how comfortable your investors, co-founders, and banks feel about your business.

Below, we’ll break down what arm’s length transactions are, why they matter for NZ businesses, and practical steps you can take to get them right (without making things awkward with the people you know).

What Is An Arm’s Length Transaction?

An arm’s length transaction is a transaction where the parties deal with each other independently, on normal commercial terms, without one side getting an unfair advantage because of a special relationship (like being relatives, close friends, or part of the same corporate group).

In plain terms, it means:

• It looks like a normal market deal (pricing and terms make sense).
• The process was fair (proper approval, no hidden side arrangements).
• There’s evidence (you can show how you landed on the price and terms).

Arm’s length transactions are most relevant when there’s a risk that the deal isn’t truly independent, for example:

• Your company buys or sells assets to a director or shareholder
• You engage a family member as a contractor or employee
• A related company provides services “at cost” (or at an inflated fee)
• You lease premises from yourself or a related entity
• You lend company money to a founder (or the founder lends money to the company)

These are often called related-party transactions. They can be fine, but they should be set up carefully so you can show the deal is commercially defensible.

Arm’s Length Vs Related-Party: What’s The Difference?

A deal can be both “related-party” and “arm’s length”. The key is whether the terms are comparable to what you’d agree with a stranger, and whether the decision-making was properly managed (especially where a director has a personal interest).

Why Arm’s Length Transactions Matter For Small Businesses In NZ

For many small businesses, “we trust each other” is how deals get done. But when you’re dealing with related parties, trust isn’t a substitute for process and paperwork.

Getting arm’s length transactions right can help you avoid disputes and headaches later, especially when your business grows, new shareholders come in, or someone wants to exit.

1) Tax And IRD Risk

IRD generally expects related-party dealings to be priced on a commercial basis. If you undercharge, overcharge, or shift value between related parties in a way that doesn’t match market reality, it can increase the risk of scrutiny and adjustments (and in some cases penalties and interest).

This often comes up with:

• Shareholder salaries vs dividends
• “Management fees” between related entities
• Rent paid to a director or shareholder for business premises
• Loans between owners and the company (especially if there’s no interest or no repayment plan)

Even where your intention is innocent (for example, trying to keep costs low), the risk is that the arrangement looks like a value transfer rather than a genuine commercial deal.

Note: This article is general information only and isn’t tax advice. It’s a good idea to speak to your accountant or tax adviser about your specific situation.

2) Director Duties And Conflicts Of Interest

If you’re a company director, you have duties under the Companies Act 1993. In practice, that includes acting in the best interests of the company and carefully managing conflicts when you’re personally interested in a transaction.

For example, if you’re on both sides of the deal (you personally, and the company), you want to be able to show that:

• the company got a fair deal, and
• the decision was properly approved (not just “we agreed over coffee”).

Exactly what approvals or disclosures are required can depend on your company’s circumstances (including its constitution, shareholder arrangements, and the nature of the transaction). A well-drafted Shareholders Agreement can also help by setting out how conflicts, approvals, and related-party transactions should be handled.

3) Investor, Buyer, And Bank Confidence

Imagine your business is doing well and you decide to raise capital, sell part of the company, or apply for funding. One of the first things a buyer, investor, or lender will look at is whether the financials reflect “real” business performance.

Related-party transactions that aren’t arm’s length can make your numbers unreliable. Common examples include:

• rent that’s far below market (profits look artificially high)
• director “drawings” labelled as expenses (profits look artificially low)
• services from a related entity charged at inflated rates (cash is extracted)

Having clean, well-documented, arm’s length arrangements makes due diligence smoother and can protect your valuation.

4) Disputes Between Co-Founders Or Family Members

Plenty of businesses start with friends or family. That can be a strength, but it also means small misunderstandings can turn into big disputes.

Arm’s length documentation helps keep expectations clear. If you’re doing business with a family member (for example, paying them, reimbursing them, or giving them a role), it can be worth properly recording it, similar to how you’d treat any other commercial arrangement.

For example, if they’re being engaged as a contractor, using a tailored Contractor Agreement reduces the risk of confusion about scope, payment, ownership of work, and what happens if the relationship changes.

Common Examples Of Arm’s Length Transactions (And Where Businesses Slip Up)

Arm’s length issues don’t only happen in “big corporate” settings. They show up in everyday SME decisions.

Leasing Premises From A Director Or Shareholder

A very common setup is where you own a building personally (or via a separate entity), and your trading business rents it.

This can work well, but arm’s length problems can arise if:

• rent is not aligned with market rates (either too high or too low)
• there’s no written agreement (so responsibilities and termination rights are unclear)
• the lease terms are one-sided (for example, unusual outgoings, no repair obligations, unclear rent reviews)

Even if it feels “internal”, treating it like a proper commercial arrangement (including documenting it like a real lease) can protect both the business and the owner.

Selling Business Assets To A Related Party

If your business sells a vehicle, equipment, stock, or IP to a director or family member, the risk is that the price isn’t defensible. That can create tax issues and, if you have other shareholders, it can raise fairness concerns.

A simple way to make it more arm’s length is to get a valuation or at least comparable market listings, then record the decision and approval.

Related-Party Service Agreements (Marketing, Management, Labour Hire)

Sometimes owners create a second entity that provides services back to the trading business (for example, admin services, marketing, management, labour, or consultancy).

This can be legitimate, but it’s a classic area where businesses fail to document what’s being delivered and why the fees are what they are.

If services are being provided, it’s usually worth having a clear Service Agreement so the scope, fees, liability, and termination rights are set out properly.

Loans Between The Company And Shareholders/Directors

Founders often lend money to their company, especially early on. Or the company may advance money to a shareholder/director (sometimes unintentionally, through drawings or reimbursed expenses).

Arm’s length issues arise when there’s no paper trail, no repayment timeline, or unclear interest terms. From a governance and tax perspective, it’s usually safer to document loans clearly (and keep them consistent with what an independent party might agree to).

Paying Family Members In The Business

Employing or contracting family members is common in small business. The risk isn’t that it’s “not allowed” - it’s that pay and conditions may not match the role, or there’s no proper agreement.

If you’re hiring someone as an employee, a written Employment Contract helps set expectations and reduces the risk of disputes later (including about hours, duties, and performance issues).

How Do You Show A Transaction Is At Arm’s Length?

The best way to approach arm’s length transactions is to ask: if this was a stranger, what would we do?

That usually means focusing on two things:

• commercial terms (price, scope, risk allocation, payment terms)
• proper process (approvals, conflict management, record keeping)

Use Market Evidence (Pricing And Terms)

Depending on the transaction, market evidence might include:

• independent valuations (for property, large assets, or IP)
• quotes from alternative suppliers
• comparable online listings
• benchmark rates (for contractors or professional services)

You don’t always need a formal valuation, but you do want something you can point to later if someone asks “how did you arrive at that number?”

Document The Deal Properly (Not Just Emails)

Handshake deals often fall apart when someone’s memory differs, the relationship changes, or the business is audited or sold.

A written agreement should typically cover:

• what’s being provided or transferred
• pricing and payment terms
• timelines and deliverables
• termination rights
• liability and warranties
• confidentiality and IP ownership (if relevant)

For some arrangements, you might also need more formal steps (for example, a deed or company resolutions) to make sure everything is legally enforceable and properly authorised.

Manage Conflicts Of Interest (Especially For Directors)

If you’re a director and you have an interest in a transaction, you should treat that as a governance issue, not just a commercial one.

Depending on your company’s setup (including your constitution and shareholder arrangements), good practice often includes:

• disclosing the conflict to the board/shareholders
• recording the disclosure and approval (for example, in minutes/resolutions)
• having non-interested decision-makers review and approve the deal where possible

This is also where having a fit-for-purpose Company Constitution can help, because it can set out decision-making rules and provide clarity on approvals.

Legal Areas Where Arm’s Length Transactions Commonly Come Up In NZ

In New Zealand, “arm’s length” is a concept that shows up across multiple areas. You don’t need to be a legal expert to handle it well, but you do need to know which risks apply to your situation.

Companies Act And Governance

If you operate through a company, your directors must act in the best interests of the company and manage conflicts appropriately. Related-party transactions are a classic area where directors can be challenged if the transaction appears self-serving or not properly authorised.

Where there are multiple shareholders, this can become a real flashpoint. The safest approach is to treat the transaction as something that might be reviewed later and structure it accordingly.

Contract Law And Enforceability

Even where both parties “trust each other”, unclear terms create enforceability issues. If the relationship breaks down, a vague arrangement is harder to enforce and can be expensive to sort out.

If you’re changing parties to a contract (for example, moving an agreement from you personally to your company, or from one entity to another), you may need formal documentation such as an Novation to make sure the right party is actually bound.

Privacy And Data (If Services Are Being Provided)

Related-party arrangements often involve sharing customer lists, marketing databases, or employee information between entities.

That’s where privacy risk sneaks in. If personal information is being collected or shared, you’ll want to make sure your business has a fit-for-purpose Privacy Policy and that any data-sharing is handled carefully.

Employment Law (When The “Related Party” Works For You)

If you bring someone into the business as an employee (including friends or family), you still need to meet employment law obligations. Informal arrangements can quickly cause issues if hours change, performance issues arise, or the employee leaves on bad terms.

Having a written employment agreement and clear workplace policies will put you in a much stronger position if something goes wrong.

A Practical Checklist: How To Structure Arm’s Length Transactions From Day One

If you want to keep things simple and “business-like” (without making it overly formal), use this checklist whenever you’re doing a deal with someone connected to your business.

1) Identify Whether It’s A Related-Party Transaction

Ask yourself:

• Are we related (family, close personal relationship)?
• Is the other party a director, shareholder, or employee?
• Is the other party a company we (or our family) own or control?

If the answer is yes, treat it as a related-party deal and move to the next steps.

2) Pressure-Test The Commercial Terms

• Is the price consistent with market rates?
• Are payment terms reasonable (not overly generous or harsh)?
• Would we accept these terms from a stranger?

If you can’t confidently answer yes, consider getting a quote, comparable pricing, or a valuation.

3) Put It In Writing

You don’t need to overcomplicate it, but you do need clarity. The contract should reflect what you agreed and protect both sides.

Depending on the transaction, that might be:

• a service agreement for ongoing work
• a contractor agreement for project work
• a lease or licence arrangement for property
• a sale agreement for assets
• a loan agreement for funding arrangements

Generic templates often miss key issues (especially around liability, termination, and IP), so it’s usually worth getting it tailored.

4) Record Approvals And Manage Conflicts

If a director has a personal interest, document how the decision was made and approved. This is particularly important if there are multiple directors or shareholders, or if the transaction is significant.

Even simple paperwork (like written resolutions or meeting minutes) can make a big difference later.

5) Keep Your Paper Trail Organised

If someone asks you in 12 months (or 3 years) why the business paid a certain fee or sold an asset at a certain price, you want to be able to answer quickly.

Keep:

• signed agreements
• quotes and valuations
• invoices and receipts
• emails confirming key points
• board/shareholder approvals

6) Review The Arrangement As Your Business Changes

What’s “commercial” for a startup might not be commercial once you’re profitable, hiring staff, or bringing in investors.

It’s a good habit to review related-party arrangements when you:

• add shareholders
• seek investment or lending
• expand into new locations
• sell the business or complete due diligence

Key Takeaways

• Arm’s length transactions are deals made on genuine commercial terms, as if the parties were independent and negotiating in their own interests.
• Arm’s length issues commonly arise in small businesses when dealing with related parties such as directors, shareholders, family members, or related companies.
• Getting these transactions right can reduce risk across tax, director duties, shareholder disputes, and due diligence if you’re raising capital or selling the business.
• To show a transaction is arm’s length, focus on market evidence (comparables/valuations), proper documentation (a written agreement), and proper process (conflict disclosure and approvals).
• Strong legal foundations “from day one” make it much easier to grow, bring in new partners, and avoid messy disputes later.

If you’d like help documenting a related-party arrangement, managing conflicts, or making sure your arm’s length transactions are set up properly, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.