Who Can Witness Your Business Or Commercial Documents In Australia?

When you’re running or growing a business in Australia, there’ll be moments where signatures matter - and getting the witnessing right can be the difference between a watertight document and one that’s open to challenge.

The tricky part is that not every document needs a witness, and the rules change depending on the type of document and who is signing it (an individual or a company). If you’ve ever wondered “who can witness this?” or “do I even need a witness here?”, you’re in the right place.

In this guide, we’ll explain what witnessing actually is, when you need it, who qualifies, and how to get your documents executed correctly the first time. We’ll also clear up common myths - especially around companies signing under section 127 of the Corporations Act - so you can sign with confidence.

What Does “Witnessing” Mean For Business Documents?

Witnessing is a simple safeguard: an independent person watches you sign a document and then adds their own signature to confirm they saw you sign. That extra signature helps reduce the risk of fraud, forgery or disputes about whether the signature was genuine or freely given.

Importantly, a witness doesn’t verify the content of the document. Their role is to confirm the signature event occurred, and - where relevant - to record their details (name, address and sometimes occupation).

Not every document needs to be witnessed. Many commercial agreements are valid without a witness, provided they’re properly signed and dated. Others, like deeds signed by individuals and statutory declarations, have stricter witnessing rules. If you’re unsure about the mechanics of signing itself, it’s worth revisiting what makes a valid signature and when extra formalities apply.

Who Can Witness Different Document Types?

The right witness depends on what you’re signing and who is signing it. Here’s a practical breakdown of the common scenarios for Australian businesses.

Standard Contracts And Agreements (Most Day-To-Day Documents)

For most everyday contracts - for example a Service Agreement, Supply Agreement, or office lease that’s not expressed as a deed - there’s usually no legal requirement to have a witness.

Even so, it’s good practice to use an independent adult who is not a party to the contract and doesn’t have a stake in the outcome. Suitable options include a colleague from another team, a neighbour, or a friend (as long as they’re not named in the agreement).

If you want stronger evidence of the signing process, you can also have each party initial each page. If you’re curious when and why to do that, this quick primer on initialling documents explains how it supports clear execution.

Deeds Signed By Individuals (For Example, Deed Of Release Or Assignment)

Deeds have higher formality. Where an individual signs a deed, most states and territories require the signature to be witnessed by an independent adult. The witness should:

• Be present when the individual signs
• Not be a party or beneficiary
• Be able to identify the signer if asked later

It’s generally best to avoid close family members as witnesses for deeds to reduce any perception of bias. If you’re preparing a deed and weighing up whether a deed is the right format in the first place, this overview of what a deed is sets out the key differences from standard contracts.

Companies Signing Under Section 127 (Corporations Act)

A company can execute documents in a specific way that gives counterparties confidence the document is valid on its face. Under section 127 of the Corporations Act 2001 (Cth), a proprietary company can sign via:

• Two directors; or
• One director and one company secretary; or
• The sole director (if the company has a sole director and no company secretary).

These officer signatures are not “witnessing” - they are the company’s execution. An independent witness is generally not required for documents executed by a company under section 127 (including company deeds). If you’re a sole director company, you can now execute under section 127 as a single officer. For the practical rules - including electronic signing and split execution - see our guide to signing under section 127.

Statutory Declarations And Affidavits

Statutory declarations and affidavits must be witnessed by an “authorised witness” prescribed by the relevant legislation. Common authorised witnesses include a Justice of the Peace (JP), lawyer, police officer, pharmacist, and other specified professionals.

The list and process differ between Commonwealth and state declarations. If you’re signing in NSW, the steps and eligible witnesses for statutory declarations in NSW are set by state law and require strict compliance.

Documents For Overseas Use (Notarisation And Apostille)

If a document will be used outside Australia - for example, appointing a foreign distributor or authorising a bank in another country - you may need notarisation by a notary public, and sometimes an apostille or legalisation. Notaries are specially qualified and distinct from JPs. Plan ahead here; overseas requirements can be technical and vary by country.

Do Your Documents Actually Need A Witness?

Here’s a simple way to think about it. Ask two questions: what type of document is it, and who is signing?

• Standard contracts signed by individuals: witnessing is usually optional but a good practice.
• Deeds signed by individuals: witnessing by an independent adult is typically required.
• Company execution under section 127: no independent witness is generally required - it’s executed by the officers.
• Statutory declarations/affidavits: must be witnessed by an authorised witness.
• Property instruments intended for registration (e.g. certain land titles forms): check the relevant state land registry - specific witnessing rules often apply to individuals.

Some documents are often assumed to need witnesses when they usually do not. For example, company resolutions, shareholder agreements and employment contracts generally don’t require witnesses to be valid. What matters is that they’re signed correctly by the right people - and that the underlying document is well-drafted. If you’re putting governance in place between founders, a tailored Shareholders Agreement is more important than whether a witness signs it.

Leases can be either contracts or deeds. If a landlord requires a deed (common in commercial and retail leasing), individuals signing should use a witness. Where a company executes a lease as a deed under section 127, witnessing is generally not required.

Step-By-Step: Getting Your Documents Signed And Witnessed Properly

1) Confirm The Document Type And Signer

Check if the document is a standard agreement or a deed, and whether it’s being signed by a company or an individual. The execution clause often tells you what’s intended.

2) Work Out If A Witness Is Required

If it’s an individual signing a deed, line up an independent adult witness. If it’s a statutory declaration or affidavit, find an authorised witness. If a company is signing under section 127, arrange the right officers to sign - no separate witness needed.

3) Choose A Suitable Witness (If Needed)

Pick someone independent (not a party or beneficiary). Avoid close relatives for deeds. For declarations, make sure the person’s occupation is on the authorised list and record their details accurately.

4) Sign In The Presence Of The Witness

The witness must be physically present (or use a compliant video link process if permitted by the relevant law - more on that below) to observe the signature. They should then sign and add any details required in the execution block.

5) Record Details Clearly

Have the witness print their full name and address, and include their occupation where required. Make sure signatures and dates are clear and consistent.

6) Keep Complete Copies

Store clean copies of the fully signed and witnessed document. Good record-keeping makes life easier if a bank, regulator or counterparty asks for evidence later. If you’re signing across multiple pages, initialling can reduce arguments about page substitution, and this quick guide to initialling documents explains the practicalities.

7) Consider Your Broader Contract Suite

Getting the witnessing right is one part of reducing risk - the other is using the right legal documents. If you’re collecting personal information, you’ll likely need a Privacy Policy. Hiring staff? Put clear terms in place with an Employment Contract. Sharing confidential info with partners or contractors? Use a Non‑Disclosure Agreement. Lining up your governance? Consider a Company Constitution and a Shareholders Agreement.

Electronic And Remote Witnessing In Australia

Electronic signing is now widely accepted in Australia for many business documents, and the Corporations Act permits companies to execute documents electronically (including deeds) under section 127. That said, witnessing and electronic execution are not the same thing.

Key points to keep in mind:

• Electronic execution by companies: permitted under section 127, and witnessing is generally not required. The method used must identify the signatory and indicate their intention to sign.
• Deeds and individuals: some states allow electronic signing and even remote witnessing for certain deeds, but the rules vary by jurisdiction and document type, so check the local position before relying on it.
• Statutory declarations/affidavits: several jurisdictions permit audio-visual witnessing under specific procedures, while others retain in‑person requirements. Requirements are strict - follow the prescribed steps exactly.

As a general rule, use platforms and processes that clearly identify the signer and create a reliable audit trail. If you’re weighing up whether to sign with a pen or online, this comparison of wet‑ink versus electronic signatures sets out when each approach makes sense. If you’re signing in NSW and need to rely on video witnessing for specific documents, the framework for remote witnessing in NSW outlines the conditions that apply.

Common Myths (And The Real Position)

• “All company documents need a witness.” - Incorrect. Company execution under section 127 is by officers, not by a witness, and no independent witness is generally required.
• “A sole director can’t sign alone.” - Outdated. A proprietary company with a sole director and no company secretary can execute under section 127 with that sole director’s signature.
• “Every important contract should be a deed.” - Not necessarily. Deeds carry formality and, for individuals, typically require a witness. Many agreements work perfectly well as standard contracts.

Practical Tips For Choosing And Using Witnesses

Keep It Independent

Pick someone who isn’t a party and has no personal stake in the deal. Avoid close family for deeds to remove any perception of pressure or bias.

Be There At The Same Time

Witnessing requires the witness to see the person sign - either in person or, where valid, via a compliant audio‑visual process. A witness signing later without seeing the signature happen is not valid.

Write Details Clearly

Make sure the witness prints their name and address (and occupation where required) in the execution block. Poorly completed witness details can cause delays with banks, landlords or registries.

Use The Right Execution Block

Match the execution block to the signer. Companies signing under section 127 should use a company execution block. Individuals should use an individual (or individual deed) block with space for the witness where needed. If you’re not sure how to structure your signature pages, our overview of section 127 execution includes helpful examples for companies.

Think About The Bigger Picture

Witnessing helps prove that a signature is genuine - but it’s not a substitute for clear, tailored contract terms. A solid agreement with the right mechanics (payment terms, liability allocation, IP ownership, termination rights) reduces disputes before they ever reach the “who signed what” stage.

Key Takeaways

• Witnessing confirms a signature event; it doesn’t validate the content. Use it where required (and where helpful) to reduce risk.
• Most standard business contracts don’t legally require a witness, but deeds signed by individuals typically do, and statutory declarations must be witnessed by an authorised witness.
• Company execution under section 127 is by officers, not witnesses - including where there is a sole director - and an independent witness is generally not required.
• Electronic execution is widely accepted for companies, but remote or electronic witnessing depends on the document type and state rules - follow the exact process if you rely on it.
• Choose an independent adult as a witness, complete their details clearly, and keep clean copies of fully executed documents as part of your records.
• Beyond witnessing, protect your business with the right contract suite, like a Privacy Policy, Employment Contract, Non‑Disclosure Agreement, and governance documents such as a Shareholders Agreement and Company Constitution.

If you’d like help preparing execution blocks, deciding whether you need a deed, or arranging valid witnessing for your documents, contact us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.