How NZ Companies Can Validly Sign Contracts And Deeds (Companies Act)

If you run a business, you’ll sign things all the time - supplier agreements, customer terms, leases, NDAs, service agreements, funding paperwork, you name it.

But here’s the catch: “signing” isn’t just putting pen to paper (or clicking an e-signature). If a document isn’t executed correctly, you can end up with a contract you can’t enforce, a deal that stalls at the last minute, or a dispute about whether your company ever agreed to the terms in the first place.

This guide breaks down how companies sign documents in New Zealand, including how to execute contracts and deeds under the Companies Act 1993, what board authority you might need, and the practical steps to get it right from day one.

Why “Proper Signing” Matters For Your Business

Most small business owners only find out signing rules matter when something goes wrong - like a client refuses to pay, a landlord says the lease was never properly signed, or an investor asks for evidence the agreement is binding.

Getting execution right is important because it helps you:

• Make agreements enforceable (so you can actually rely on them if there’s a dispute).
• Reduce “authority” arguments (e.g. “that staff member didn’t have permission to sign”).
• Move faster when banks, landlords, or counterparties want clean signing blocks and clear authority.
• Protect directors and shareholders by ensuring decisions are properly documented.

And just as importantly, correct signing usually forces you to answer the bigger question: who in the business is allowed to bind the company?

If you want a plain-English overview of what makes a signature (and the wider document) legally effective, what makes a signed document legally binding is a helpful starting point.

How Can A Company Validly Sign Under The Companies Act 1993?

In New Zealand, a company is a separate legal person. That means it can enter contracts - but it can only “act” through real people (usually directors, officers, employees, or authorised agents).

The Companies Act 1993 sets out how a company can enter into contracts (including through agents) and how it can execute documents (including deeds). In practice, there are two layers you want to line up:

• Capacity and authority: does the person signing have authority to bind the company (for example, under section 180(1) of the Companies Act 1993)?
• Execution formalities: was the document signed in a legally acceptable way for that type of document (particularly if it’s being executed “as a deed” under section 180(2))?

Common Ways Companies Sign Documents

Most company documents are executed in one of these ways:

• Signing by director(s) (often two directors, or a sole director if you only have one).
• Signing by a director and another authorised person (depending on the company’s internal rules and the document’s requirements).
• Signing by an authorised agent (where authority is delegated to someone like a manager or employee).

What’s “correct” depends on:

• your company’s governance (including your Company Constitution, if you have one);
• shareholder agreements or internal policies about approvals;
• the value/risk of the transaction;
• the counterparty’s requirements (banks and landlords can be strict); and
• whether the document is a contract or a deed.

Authority Vs Formalities (They’re Not The Same Thing)

A very common trap for small businesses is thinking “if it’s signed, it’s valid.” But you can have:

• a properly signed document with no authority (e.g. an employee signs something they weren’t allowed to); or
• authority but incorrect execution (e.g. you intended to sign as a deed, but you didn’t follow the correct deed execution method).

Either way, you’re creating risk - and it often shows up right when you want to enforce the deal or complete a transaction.

Who Should Sign For Your Company (And How Do You Prove They Can)?

From a practical small-business perspective, you want signing authority to be simple, consistent, and documented.

1) Directors Signing

Directors usually have broad authority to manage the company’s business and affairs. For many day-to-day contracts, having a director sign is the simplest approach (and it reassures the other party).

If you have:

• two or more directors, many counterparties expect two directors to sign (even if one director may be legally sufficient in some contexts);
• a sole director, you’ll typically sign as the only director.

Where it gets tricky is where the other side wants evidence that the director had approval to sign - for example, because the deal is large, unusual, or could affect ownership or company assets.

2) Using A Directors’ Resolution To Document Approval

Even if a director is signing, it’s often smart to record the approval properly, especially for:

• borrowing and granting security interests;
• buying or selling significant assets;
• entering a lease or assigning/transferring a lease;
• settling disputes; or
• entering any long-term, high-value contract.

This is where a Directors Resolution can be useful - it creates a paper trail that the company approved the transaction and authorised the signatory/signatories.

It’s also a great internal governance habit. If you ever sell your business or bring on investors, clean records make due diligence much smoother.

3) Employees Or Managers Signing (Delegated Authority)

Many businesses want a sales manager or operations manager to sign documents so the director isn’t a bottleneck. That’s completely normal - but you should set the delegation up properly.

Practical ways to manage this include:

• a written delegation of authority policy (who can sign what, up to what value);
• board minutes or resolutions authorising a role/person to sign certain categories of contracts; and
• clear signing blocks showing the person signs “for and on behalf of” the company.

If the contract is important, the other party may ask for a copy of the resolution or a certificate confirming authority - so it’s worth having it ready rather than scrambling later.

4) Agents And “Holding Out” Risk

Even without a written delegation, a company can sometimes be bound if it has behaved in a way that makes the other party reasonably believe the person had authority (for example, if you routinely let a manager sign supplier agreements and never correct it).

This is why consistent internal processes matter. If you don’t want someone signing, don’t let them negotiate and “finalise” deals without guardrails.

Contracts Vs Deeds: What’s The Difference When Signing?

Before you think about signature blocks, it’s worth checking what you’re actually signing.

A contract is usually the default for business agreements. A deed is a more formal legal instrument often used where the parties want stronger formality (or where the law/industry practice expects it).

If you’re unsure which one you have, the distinction matters because deeds can have different execution rules (including specific requirements for how a company signs, and the need for clear intention and “delivery”). The differences are explained well in deed and agreement.

When Might Your Business Be Asked To Sign A Deed?

Small businesses often encounter deeds in situations like:

• commercial leasing (for example, a deed of assignment, deed of renewal/variation, or deed of surrender);
• settlement documents (like a deed resolving a dispute);
• guarantees and indemnities in some contexts; and
• certain share or business sale transactions.

For example, if you’re dealing with leasing paperwork, documents like Deed of Assignment of Lease commonly come with execution requirements that landlords take seriously.

Do Deeds Need To Be Witnessed In New Zealand?

Not always. For companies, the Companies Act 1993 provides a specific way to execute a deed (for example, in the company’s name by 2 directors, or by the sole director if there’s only 1). That statutory method does not, by itself, require a witness.

That said, some deeds (and some counterparties) still require witnessing as a matter of document terms, industry practice, or risk management. If a deed includes a witness block, you should follow it - and you should also make sure the deed is being executed as a deed (including clear intention and “delivery”), not just signed like an ordinary contract.

Before you get someone to witness, it’s important to know who can actually do it and what they need to do (it’s not just “watching you sign”). For practical guidance, who can witness a signature is a useful reference point.

Because execution requirements can depend on the document type and context (and on what the other side will accept), it’s worth getting advice before signing - especially if the deed is high-value (like a lease, finance document, or settlement).

Can You Electronically Sign And Witness Company Documents In New Zealand?

Most businesses want digital signing because it’s faster and easier to manage (especially if you’re signing with suppliers, customers, or investors across the country).

In New Zealand, electronic signatures are often valid under the Contract and Commercial Law Act 2017 (which incorporates electronic transactions principles), as long as legal requirements are met (for example, the method identifies the signatory and indicates their approval, and it’s reliable in the circumstances).

However, not every document can be treated the same way. Some documents have extra formality requirements (including when they must be executed “as a deed” and how “delivery” is handled), and some transactions or counterparties still insist on wet ink signatures.

What About Electronic Witnessing?

Electronic witnessing is an area where businesses need to be careful. Depending on the document and the circumstances, remote witnessing may or may not be appropriate - and sometimes the other party (or a registry/authority) won’t accept it even if you believe it’s legally fine.

If you’re thinking about remote signing workflows, electronic witnessing is a good topic to check early so you don’t end up re-signing everything at the eleventh hour.

Practical Tip: Match The Signing Method To The Risk

A sensible approach for small businesses is:

• low risk / high volume documents (like standard supplier POs or routine customer service agreements): often fine to sign electronically with a consistent platform and internal approval process;
• high risk / one-off documents (like leases, deeds, funding, security interests, settlement deeds): treat these as “slow down and check” documents before anyone signs.

This isn’t about being overly cautious - it’s about protecting your business from day one with processes that match the stakes.

A Practical Checklist For Signing Documents In New Zealand (Company Edition)

If you want a simple internal process your team can follow, this checklist is a solid baseline. You can adapt it depending on your size and industry.

Step 1: Identify What You’re Signing

• Is it a contract or a deed?
• Is it meant to be binding immediately, or only once conditions are met?
• Does it involve personal guarantees, indemnities, or security?

If the document is labelled “deed”, assume there are extra formality requirements until confirmed otherwise.

Step 2: Confirm Who Has Authority

• Is a director signing?
• Are two directors required (by the counterparty or your internal rules)?
• Is an employee signing - and if so, is there written delegation or a resolution covering this?

If you don’t already have a simple authority framework, it’s worth putting one in place. It will save you a lot of back-and-forth later.

Step 3: Check Your Company’s Internal Rules

Your constitution and internal governance documents may set out how decisions are made and who can sign. Even if you’re a small company with a sole director, having a clear Company Constitution can reduce uncertainty as you grow (for example, when you bring on co-founders, investors, or additional directors).

Step 4: Get The Signing Block Right

This sounds basic, but it matters. A signing block should clearly show:

• the full legal name of the company;
• the signatory’s name and title (e.g. “Director”); and
• that they sign for and on behalf of the company.

This helps avoid arguments like “I signed personally” or “I signed as an employee, not for the company”.

Step 5: Follow Witnessing Requirements (If Any)

• Does the document require a witness (either because the deed/contract says so, or because the other party insists)?
• Does the witness need to be independent (often recommended)?
• Does the witness need to be physically present, or can it be done remotely in your circumstances?

If you get witnessing wrong, you may end up needing everyone to re-sign - which can be painful if multiple parties are involved.

Step 6: Store The Signed Version Properly

Once signed, make sure you keep:

• a clean PDF copy (or original wet-ink copy, if relevant);
• any board resolutions/minutes approving the signing;
• any annexures, schedules, or referenced documents; and
• email trails confirming final version approval.

Good record-keeping isn’t just admin - it’s part of making sure your agreements are enforceable and your company can prove what was agreed.

Key Takeaways

• For small businesses, signing documents in New Zealand is not just about the signature - it’s about authority, correct execution, and matching the process to the document type.
• Under the Companies Act 1993, companies act through people, so you should be clear on who can bind the company (directors, authorised employees, or agents).
• It’s smart to document approval for high-value or high-risk transactions using a directors’ resolution, especially where third parties may ask for evidence of authority.
• Deeds often come with additional formalities. For companies, the Act provides a deed execution method that generally doesn’t require witnessing, but you still need to follow the document’s requirements and make sure it’s executed as a deed (including intention and delivery).
• Electronic signing is often workable in NZ, but some documents (and counterparties) still require stricter processes - and witnessing can be a common stumbling block.
• Having consistent internal signing processes and storing signed documents properly can prevent disputes and make future due diligence much smoother.

If you’d like help setting up a clean signing process, reviewing an execution block, or checking whether your contract or deed is being signed correctly, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.