Heads of Agreement and Memorandum of Understanding in New Zealand Deals

When a deal is moving quickly, many New Zealand businesses reach for a heads of agreement or a memorandum of understanding and assume they are basically the same thing. That is where problems start. A founder might sign a short document thinking it is only a discussion paper, miss a binding exclusivity or confidentiality clause, or rely on commercial promises that were never written clearly enough to enforce.

The result can be expensive. You may spend money on due diligence, reserve stock, pause negotiations with other parties, or announce a deal internally, only to find the document does not protect you in the way you expected. Just as often, a business accidentally creates legal obligations before the full contract is ready.

This guide explains the real difference in the heads of agreement vs memorandum of understanding (mou) question for New Zealand businesses, what each document usually includes, which parts can be binding, and what to check before you sign.

Overview

A heads of agreement and a memorandum of understanding are both preliminary deal documents, but they are not interchangeable in every situation. The label matters less than the wording, the commercial context, and whether the parties intended some or all terms to be legally binding.

• Whether the document is intended to be binding, non-binding, or mixed
• Which key commercial terms are settled and which are still subject to further negotiation
• Whether confidentiality, exclusivity, costs, access to information, or dispute clauses should be binding now
• How the document describes conditions, due diligence, approvals, and timing
• What must go into the full contract later, including price, scope, risk allocation, and termination rights

What Heads of Agreement Vs Memorandum of Understanding Mou Means For New Zealand Businesses

The short answer is this: both documents are used to record a deal at an early stage, but neither name guarantees a particular legal outcome. In New Zealand, a court will usually look at substance over the heading.

That means a document called an MoU can contain binding obligations, and a document called heads of agreement can be largely non-binding. What matters is what the document says, how certain the terms are, and whether the parties intended to create legal relations.

What is a heads of agreement?

A heads of agreement usually sets out the main commercial terms the parties have agreed in principle before a full contract is prepared. It is common in business sales, joint ventures, supply deals, leases, software projects, funding negotiations, and other transactions where the broad structure is agreed but the detailed contract drafting still needs work.

It often covers:

• the parties involved
• the basic deal structure
• price or pricing method
• key dates and milestones
• due diligence rights
• conditions that must be met before the deal proceeds
• exclusivity periods
• confidentiality obligations
• who pays transaction costs

Founders often use heads of agreement when they want enough clarity to move forward with legal drafting and due diligence, but are not yet ready to sign the full contract.

What is a memorandum of understanding?

A memorandum of understanding, often shortened to MoU, usually records a shared understanding between parties about proposed cooperation, a future transaction, or the framework for a relationship. It is common where parties want to set expectations, define project scope at a high level, or confirm that negotiations have reached a meaningful stage.

An MoU often appears in situations such as:

• strategic partnerships
• pilot projects
• collaboration between service providers
• research and development arrangements
• cross-border commercial discussions
• multi-party projects where the final legal structure is still being worked out

In practice, an MoU may read more cooperatively and less transaction-focused than heads of agreement, but that is not a hard rule.

Is one more legally binding than the other?

No. The main issue is not whether the document is titled heads of agreement or memorandum of understanding. The main issue is whether the wording shows an intention to be legally bound.

Many preliminary documents are deliberately drafted as partly binding and partly non-binding. For example, the parties may say that the commercial deal terms are subject to a later formal agreement, while confidentiality, exclusivity, governing law, costs, and access to records are immediately binding.

This is where founders often get caught. They skim the opening statement saying the document is non-binding, but miss a clause later in the document that creates binding obligations straight away.

When should a business use one?

The right document depends on the deal and what stage you are at before you sign.

A heads of agreement may suit you better where:

• the transaction has a clear commercial structure
• the key terms are mostly settled
• you want the lawyers to draft a formal contract from agreed deal points
• you need a framework for due diligence and exclusivity

An MoU may suit you better where:

• the relationship is still exploratory
• the parties are collaborating rather than exchanging a simple set of goods or services
• the project scope is still developing
• you want to capture intentions, roles, and next steps without finalising every commercial detail

That said, there is plenty of overlap. For many SMEs, the better question is not what to call the document, but what purpose it needs to serve before the long-form agreement is ready.

What should usually be included?

A useful preliminary agreement should state clearly what has been agreed, what has not, and what happens next. If the document leaves too much room for assumption, one side may think the deal is effectively done while the other thinks negotiations are still open.

Most well-drafted documents include:

• full legal names of the parties
• a short description of the proposed transaction or relationship
• the main commercial terms agreed so far
• any assumptions the deal depends on
• conditions such as finance, board approval, landlord consent, third-party consent, or satisfactory due diligence
• timeframes for negotiations and completion
• whether the document is binding, non-binding, or mixed
• which clauses are intended to be legally enforceable
• confidentiality obligations
• exclusivity terms, if any
• how each party will bear costs before the final contract is signed
• what documents still need to be prepared

Legal Issues To Check Before You Sign

The biggest legal issue is clarity. If your preliminary document is vague about legal effect, scope, or next steps, you increase the risk of dispute before the main contract even exists.

1. Is it binding, non-binding, or partly binding?

This should be spelled out in plain language near the start of the document and reinforced in the operative clauses. A statement that the document is subject to contract can help, but it is not a complete safeguard if the rest of the drafting suggests the parties intended to be bound immediately.

If some clauses are meant to bind now, identify them expressly. Common examples include:

• confidentiality
• exclusive dealing or no-shop obligations
• costs
• ownership and return of information
• governing law and jurisdiction
• dispute process for the preliminary stage

2. Are the commercial terms certain enough?

If you want the document to have legal force, the essential terms need enough certainty. If you do not want the main deal terms to bind yet, the wording should avoid sounding final where material points are still open.

Watch for unresolved issues such as:

• price adjustments
• payment timing
• scope of services
• deliverables
• risk allocation
• liability clauses and caps
• intellectual property ownership
• termination rights

These points do not always need full drafting at heads stage, but if they are critical to the deal, identify them as matters for the final agreement rather than leaving silence that can be misread.

3. Are there conditions that must be satisfied?

Many New Zealand transactions depend on external steps before the parties can commit fully. A preliminary agreement should say whether the deal is conditional and who is responsible for satisfying each condition.

Depending on the transaction, conditions might include:

• satisfactory legal, financial, and technical due diligence
• board or shareholder approval
• bank or investor approval
• landlord consent to assignment or sublease
• consent from a key customer, supplier, or licensor
• verification of assets, revenue, or compliance records

Before you spend money on setup, stock, staff, or integration planning, make sure the document does not imply an unconditional commitment where key approvals are still missing.

4. Does the document deal with confidentiality properly?

Confidentiality is often the one clause both sides definitely want to be enforceable. If you are sharing financial records, customer data, supplier terms, software information, or product plans, a bare statement that discussions are confidential may not be enough.

A stronger clause should cover:

• what information is confidential
• who can receive it
• permitted use of the information
• how long obligations last
• when information must be returned or destroyed
• whether any privacy obligations also apply if personal information is shared

If personal information is involved, businesses also need to think about their obligations under New Zealand privacy law, including any privacy notice or data protection requirements, and whether disclosure is permitted.

5. Should there be exclusivity?

Exclusivity can be valuable, but it should never be added casually. If you agree not to negotiate with anyone else for a period, you may lose leverage and delay other opportunities.

Before you accept an exclusivity clause, check:

• how long it lasts
• whether it stops active negotiation only or any discussions at all
• what happens if milestones are missed
• whether the other side must negotiate in good faith or meet due diligence deadlines
• what remedies apply if exclusivity is breached

6. Does it set out the process toward the final contract?

A preliminary document should not just record intentions. It should also show the path to the signed long-form agreement.

Useful process points include:

• who prepares the first draft
• which agreement will follow, such as an asset sale agreement, shareholders agreement, services agreement, commercial lease, or licence
• target dates for draft circulation and comments
• whether completion depends on due diligence and formal approval
• whether either party can walk away, and on what basis

7. Have you matched the document to the deal type?

A preliminary agreement for a business purchase will look very different from one used for a software collaboration or manufacturing arrangement. The drafting should reflect the real risks of the deal.

For example:

• a proposed business sale may need asset details, restraints, staff treatment, and handover assumptions
• a technology collaboration may need intellectual property ownership, licence rights, pilot scope, and data handling terms
• a supply arrangement may need minimum order volumes, territory, pricing review, and quality standards

Common Mistakes With Heads of Agreement Vs Memorandum of Understanding Mou

The most common mistake is assuming the title tells you everything. It does not. The legal effect usually turns on the wording and the conduct of the parties, not the document label alone.

Mistake 1: Treating a non-binding label as complete protection

Businesses often insert “non-binding” in the opening paragraph and stop there. Then they add detailed obligations, fixed timelines, exclusivity, and mandatory language that points in the other direction.

If you want a document to be mostly non-binding, draft it consistently. Make it clear which clauses bind and which clauses are only statements of present intention.

Mistake 2: Leaving key deal points too vague

Some founders use a short template that says almost nothing concrete. That can be just as risky as overcommitting. If a dispute arises about what was actually agreed, the document may offer little practical help.

Vagueness is especially dangerous where one side starts performing early, for example by ordering stock, allocating staff, sharing valuable information, or declining another deal.

Mistake 3: Forgetting that side clauses can still bite

Even where the main transaction is not binding yet, side obligations often are. A business can face real consequences from breaching confidentiality, exclusivity, or information return obligations.

Before you sign, identify every clause that could continue to apply even if the main deal falls away.

Mistake 4: Not documenting what happens if negotiations stop

Deals do not always proceed. A good preliminary document should say what happens to confidential information, due diligence materials, costs, and exclusivity if negotiations end.

Without that, one side may assume they can keep using information or delay returning key documents.

Mistake 5: Copying overseas wording into a New Zealand deal

Templates from Australia, the United Kingdom, or the United States are commonly used in early-stage deals, but they may not fit New Zealand practice or your particular transaction. Terms that sound familiar can carry different assumptions, especially around governing law, approvals, privacy, and dispute wording.

Before you rely on a verbal promise that “the template is standard”, make sure the document matches the deal you are actually doing in New Zealand.

Mistake 6: Skipping the long-form agreement because the short document feels enough

A heads of agreement or MoU is rarely a substitute for a full contract where money, risk, deliverables, or ownership matters are significant. The short document may get the deal moving, but it usually does not allocate liability, warranties, indemnities, default rights, or termination mechanics in enough detail.

This is where businesses can be exposed if the relationship later sours.

Mistake 7: Signing before internal alignment is done

Sometimes the legal issue is not the drafting itself, but the internal assumptions behind it. Sales, finance, operations, and management may all read the document differently.

Before you sign a contract, make sure your team agrees on:

• what has actually been promised
• what is still negotiable
• what budget has been approved
• who is responsible for the next stage
• which issues must be locked into the final agreement

FAQs

Is a memorandum of understanding legally binding in New Zealand?

It can be. An MoU may be binding, non-binding, or partly binding depending on its wording and the parties' intention. The title alone does not decide the issue.

Are heads of agreement enforceable?

Sometimes. If the document contains sufficiently certain terms and shows an intention to create legal obligations, some or all of it may be enforceable. Many heads of agreement are drafted so only selected clauses are binding.

Which is better for a business sale, heads of agreement or an MoU?

Heads of agreement are often more common for business sale deals because they usually focus on key transaction terms and the process toward a formal sale agreement. Still, an MoU can also work if it is drafted clearly for that purpose.

Should confidentiality and exclusivity be in a preliminary agreement?

Often yes, if those protections matter before the final contract is signed. They should be drafted carefully and clearly marked as binding if that is the intention.

Can we rely on a verbal agreement instead of signing heads of agreement or an MoU?

That is risky. Verbal discussions often leave each side with a different understanding of the deal, the timeline, and what is binding. Written terms help record the commercial position and reduce later disputes.

Key Takeaways

• For New Zealand businesses, the real issue in the heads of agreement vs memorandum of understanding (mou) question is legal effect, not just the title.
• Either document can be binding, non-binding, or partly binding, depending on the wording and the surrounding circumstances.
• A useful preliminary agreement should clearly state the deal structure, key terms, conditions, timeline, and what still needs to go into the full contract.
• Confidentiality, exclusivity, costs, and information handling clauses are often the parts most likely to create immediate legal obligations.
• Founders should check carefully before they sign, especially where due diligence, approvals, intellectual property, or sensitive information are involved.
• A short-form document is usually not enough on its own for significant transactions, so the path to the final agreement should be set out clearly.

If you want help with contract review, binding clauses, confidentiality terms, exclusivity provisions, and drafting the full contract, you can reach us on 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.