When To Notarise Business Documents In Australia

If you’re running a small business or building a startup, there’s a good chance you’ll come across a request to notarise a document at some point.

Sometimes it’s for something big (like opening an overseas bank account, signing an international contract, or setting up a subsidiary abroad). Other times, it’s for something surprisingly everyday (like confirming your identity for an overseas supplier).

The tricky part is that in Australia, you usually don’t need to notarise documents for standard local business activities - but certain transactions and international requirements can make notarisation essential.

In this guide, we’ll walk you through what it means to notarise a document, when notarisation is commonly required, when it’s usually not necessary, and what small businesses can do to avoid delays (and unnecessary costs) when paperwork needs to be executed correctly.

What Does It Mean To “Notarise” A Document In Australia?

In Australia, to notarise a document generally means having it certified by a notary public (also called a Notary Public).

A Notary Public is a specially appointed legal professional (usually an experienced lawyer) who can verify:

• the identity of the person signing;
• that the signature is genuine;
• that the person appeared before the notary to sign (where required); and/or
• that a copy document is a true copy of the original.

Notarisation is most commonly used when an Australian business needs to present documents to an overseas organisation (for example, an overseas regulator, bank, court, or business partner) that requires higher assurance that the document is legitimate.

Notarisation vs Witnessing vs “Certified Copies” (They’re Not The Same)

It’s easy to mix these up, especially when a counterparty simply says “can you get this notarised?” without explaining what they actually need.

• Witnessing: A person watches someone sign and then signs as a witness. Many contracts can be signed this way (and many don’t require a witness at all). The rules vary depending on the document type and context. For general guidance on signing formal documents, legal requirements for signing documents in Australia can help you understand what usually matters.
• Certified copies: An authorised person certifies that a photocopy is a true copy of the original. This is common for IDs and supporting documents.
• Notarisation: A Notary Public applies a higher level of verification and usually attaches a notarial certificate and seal. Overseas organisations often expect this.

So, while “notarise” is a common keyword people search, in practice you should first confirm whether the other party really needs notarisation, or whether witnessing or certification is enough.

When Do Small Businesses Usually Need To Notarise Documents?

Most Australian small businesses won’t notarise documents every week. But there are a few scenarios where it comes up regularly - particularly where international parties or overseas rules are involved.

1. Signing Documents For Overseas Companies, Investors Or Customers

If your startup is doing business internationally, you may be asked to notarise documents such as:

• share subscription or investment documents required by an overseas investor;
• distribution or reseller agreements governed by foreign law;
• board resolutions or incumbency certificates requested by overseas entities;
• documents required to register with an overseas regulator.

Even if a contract is governed by Australian law, an overseas counterparty may have internal policies that require notarisation for risk and compliance reasons.

2. Opening An Overseas Bank Account Or Payment Facility

Overseas banks and financial institutions often ask Australian businesses to provide notarised documents before they will open an account or provide merchant facilities.

This might include notarised copies of:

• passports and IDs of directors and shareholders;
• company registration details;
• proof of address; and
• authorisations showing who can operate the account.

If a bank is asking for proof that a specific person is authorised to act for the company, you may also need an internal authorisation document (separate to notarisation), such as an Authority to Act Form.

3. Using Overseas Suppliers Or Manufacturers (Especially For Scaling E-Commerce)

If you’re scaling an eCommerce business and working with overseas suppliers, you may be asked to notarise documents like:

• a power of attorney (if someone is acting on your behalf overseas);
• identity documents for compliance and anti-fraud checks; or
• documents needed for customs clearance and logistics arrangements (requirements vary widely by country and provider).

In these situations, notarisation is usually less about Australian law and more about meeting overseas compliance standards.

4. Certain Intellectual Property Filings Or International Registrations

Some international IP processes may require notarised documents, particularly where a foreign jurisdiction requires proof of signing authority or identity. Requirements vary significantly depending on the country and the type of IP filing.

If you’re expanding into new markets, it’s worth planning ahead - notarisation can take time, and overseas deadlines can be strict.

5. Court Or Government Requirements Outside Australia

If your business is involved in overseas litigation, regulatory matters, or government tenders, you may be asked to provide notarised affidavits, declarations, or certified corporate documents.

This often comes with additional steps beyond notarisation (such as apostille or legalisation), depending on the country and the specific requirements.

When You Usually Don’t Need To Notarise Business Documents (And What To Do Instead)

For most “day-to-day” Australian business activities, you generally don’t need to notarise documents.

Instead, you may only need to ensure the document is properly signed, dated, and executed by the right person (or by the company in a compliant way).

1. Standard Customer Contracts And Terms (Australia-Based)

If you’re selling goods or services in Australia, most customer contracts and terms don’t require notarisation.

What matters more is that your agreement is clear, enforceable, and appropriate for your business model - for example, how you handle payment terms, scope changes, limitations of liability, and termination rights.

If you’re unsure whether your contract setup is strong, it’s helpful to understand what makes a contract legally binding, because enforceability is usually about the fundamentals (offer, acceptance, consideration, intention, and certainty) rather than notarisation.

2. Most Australian Supplier Agreements

Local supplier agreements rarely need notarisation. The key is confirming:

• who the contracting parties are (correct legal entity names);
• who is signing and whether they have authority; and
• that the agreement is properly executed.

If someone is signing on behalf of a director or another person, you’ll want to do it correctly - including signatory blocks and authority wording - which is where concepts like p.p. signatures can become relevant.

3. Employment Contracts And Contractor Agreements

Notarisation is generally not required for employment contracts, contractor agreements, or workplace policies.

The bigger risk for employers is usually whether the contract is compliant, clear, and matches what’s happening in practice - particularly around pay, duties, IP ownership, confidentiality, and termination.

4. Many “Internal” Company Documents

A lot of internal company documents don’t need notarisation either, such as:

• director resolutions;
• shareholder resolutions;
• most internal approvals and delegations.

However, you still need to execute these documents correctly - especially if they’ll be relied on later (for example, during due diligence, a dispute, or a sale of the business).

How To Tell If You Actually Need To Notarise A Document

If someone asks you to notarise a document, it’s worth taking a moment to confirm the requirement before booking an appointment and paying notary fees.

Here are practical questions you (or your team) can ask.

1. Who Is Asking For It, And What Country Are They In?

If the request is coming from:

• an overseas bank;
• an overseas regulator;
• a foreign lawyer; or
• an international counterparty with strict compliance rules,

then notarisation is more likely to be genuinely required.

If it’s an Australian customer, supplier, or business partner, it’s less common - and the request may be based on misunderstanding (for example, they may mean “witnessed” or “certified copy”).

2. Is The Request Actually For Notarisation, Or For A Witness?

Some organisations use “notarise” as shorthand for “get someone official to sign it.” But there’s a big difference between a general witness and a Notary Public.

For many documents, witnessing rules can be met without notarisation. If you’re unsure what witnessing requires (and when it matters), these witness signature rules are a useful starting point.

3. Is The Document Being Signed By A Company?

If the document is being executed by a company, the counterparty may care more about proper company execution than notarisation.

In Australia, companies can execute certain documents under section 127 of the Corporations Act (for example, by two directors, or a director and a company secretary, or a sole director/secretary for a proprietary company). The practicalities of this are covered in signing documents under section 127.

If your execution block is wrong, you can run into delays - even if you notarise the document. Getting the basics right first can save you a lot of back-and-forth.

4. Does The Receiving Party Specify “Apostille” Or “Legalisation”?

Sometimes, notarisation is only one step in a chain of formalities. Depending on the country, you may also need:

• an apostille (often issued in Australia by DFAT under the Hague Apostille Convention, to authenticate a notary’s signature/seal for use overseas), or
• legalisation (a separate authentication process, which may involve DFAT and/or the relevant embassy/consulate, depending on the destination country).

If a counterparty is using terms like “apostille” or “legalisation”, it’s a sign the document is intended for overseas use and notarisation is likely part of the required process.

5. What’s The Risk If The Document Isn’t Notarised?

From a business owner’s perspective, this is the real question.

If you skip notarisation when it’s required, you may face:

• delays in onboarding with a bank or payment provider;
• rejection of your application or filing;
• delays in settlement or completion of a commercial deal; or
• issues enforcing the document in the relevant jurisdiction.

In fast-moving startup deals, those delays can be costly - so it’s worth clarifying requirements early.

Practical Steps For Notarising Business Documents (Without Slowing Down Your Deal)

When you do need to notarise documents, preparation makes the process smoother.

1. Confirm The Exact Document Set And Format

Ask the receiving party exactly what they need. For example:

• Do they need the original signed document, or notarised copies?
• Do they need every page initialled?
• Do they need a notarial certificate attached?
• Do they require specific wording on the notary’s certificate?

It’s much easier to solve these issues upfront than after signing.

2. Check Who Should Sign (And In What Capacity)

Notarisation verifies identity and signing, but it doesn’t automatically fix a document signed by the wrong person.

Before you sign, confirm:

• the correct legal entity is the signing party (company vs individual);
• the right officeholders are signing (director, secretary, authorised representative); and
• whether a board resolution or shareholder resolution is needed to authorise signing.

3. Bring The Right Supporting Documents

A Notary Public will typically need to verify identity, and may also want evidence of your authority to sign for the business.

Depending on the context, this can include:

• photo ID (passport/driver licence);
• company extracts or registration documents;
• ASIC records (or equivalent);
• director resolutions; and
• any authorisation documents the overseas party expects.

4. Build Notarisation Into Your Timeline

If you’re signing something time-sensitive (like a funding document or an overseas banking pack), treat notarisation as a critical path item.

In practice, delays happen because:

• the business signs first and then realises a notary needs to witness the signature;
• the counterparty needs a specific certificate format; or
• you need additional steps like apostille/legalisation.

A simple internal checklist for “documents that may require notarisation” can save you headaches as you scale.

Key Takeaways

• In Australia, to notarise a document usually means having it certified by a Notary Public, most often for overseas use.
• Small businesses commonly need to notarise documents for overseas banking, international business deals, foreign regulators, and certain cross-border registrations (but requirements can vary by country and organisation).
• For most day-to-day Australian business contracts and operations, you generally don’t need to notarise - but you do need to ensure the document is properly signed and executed.
• If a counterparty asks you to notarise something, confirm whether they actually mean notarisation, witnessing, or certified copies, and ask if apostille/legalisation is also required (and in Australia, whether DFAT authentication is needed).
• Getting the right signatory, execution method, and supporting documents in place early can prevent delays and protect your position in negotiations.

This article is general information only and does not constitute legal advice. If you’d like help getting your business documents signed correctly (or checking whether you need to notarise anything for an upcoming deal), you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.