Notarising Legal Agreements and Contracts in Australia

Most contracts signed and used in Australia do not need a notary. Notarising a contract usually matters when it will be relied on overseas, or when a foreign registry, bank or counterparty asks for it. The notary then confirms who signed and their authority, not that the terms are fair, valid or enforceable.

Key takeaways

• Notarisation does not by itself make a contract valid, binding or enforceable. That depends on the applicable law, required formalities and the contract's terms.
• For a contract used only in Australia, a notary is rarely required. Check whether the document needs witnesses at all, and who may witness it.
• For a contract going overseas, the receiving registry or counterparty usually decides whether it must be notarised, apostilled or legalised.
• When a company signs, the notary may also certify the company's existence and the signer's authority, which takes more preparation.
• After the notary, DFAT may issue an apostille or authentication certificate if the receiving authority requires legalisation.

What does a notary actually do with a contract?

An Australian notary witnesses signatures, certifies copies and administers oaths. With a contract, the usual act is to attest the execution: the notary identifies each person who signs in front of them, checks that they understand the document and are signing freely, watches them sign, and attaches a notarial certificate saying so. The notary may also certify a copy of a signed contract against the original.

What the notary does not do matters just as much. A certificate attesting execution does not certify that every contractual statement is true or approve the bargain. It does not confirm that the price is fair, every clause is enforceable or nothing is missing. Some pages say notarisation makes a contract “enforceable” or “legally binding”; that is not how it works in Australia. Whether a contract binds anyone is a legal question. A notary who is also retained as a solicitor may give separate Australian-law advice, but that is not part of merely witnessing execution. For what the certificate proves, see the legal effect of a notarial certificate.

When does a contract used in Australia need a notary?

Rarely. Most commercial contracts in Australia can be signed without any witness at all, and many can be signed electronically. Some documents do have formal witnessing rules, for example certain deeds, land transfer forms, powers of attorney and some family law agreements. Those rules come from state, territory or Commonwealth law, or from the form itself, and they usually name who may witness. Often that is a lawyer, a Justice of the Peace or another listed person, not specifically a notary. The rules differ between states and have changed since 2020, so check with a solicitor or the body that will receive the document.

The honest answer for most domestic contracts is that you do not need to pay for a notary. A counterparty may still ask for one as a matter of policy, and that is their right, but it is worth asking why before you book.

When does a contract going overseas need a notary?

This is where notarisation is most common. A foreign registry, court, bank or company may request independent evidence of an Australian signature or a signer's authority. A notarial certificate provides that evidence; DFAT legalisation follows only when the receiver requires it. Common examples include:

• a contract to buy or sell property overseas, where the foreign land registry requires notarised signatures;
• a share purchase or shareholder agreement for a foreign company;
• a distribution, agency or supply agreement a foreign government office must register;
• a loan or guarantee a foreign bank will hold as security;
• an employment contract required for a work permit abroad.

In many civil-law countries, a local notary drafts property and company deeds and is responsible for their content. An Australian notary does not play that role. For a property purchase in Italy or Spain, for example, the Australian notary usually witnesses a power of attorney or a signature, and the foreign notary handles the deed itself. Ask the foreign lawyer or notary exactly which document they need signed in Australia.

How does contract notarisation work?

1. Get the receiving party's requirements in writing: who must sign, whether signatures must be notarised, whether an apostille or legalisation is needed, and whether a translation is required and in what order.
2. Finalise the contract before the appointment. The notary attests a signature on a finished document. Last-minute changes may mean the appointment has to be rearranged.
3. Send the contract to the notary beforehand, with the instructions and details of every signer.
4. Keep it unsigned. Each signer must sign in front of the notary. A contract already signed usually has to be signed again. See when the document is already signed.
5. Attend with current photo ID and, for a company, evidence of authority.
6. The notary attaches the certificate, usually binding it to the contract so pages cannot be swapped.
7. If required, lodge with DFAT for the certificate specified by the receiver, followed by any embassy or consular step it requires.

If the parties are in different countries, each party usually signs a counterpart before a notary in their own country, and each counterpart goes through that country's own chain. An Australian notary cannot attest a signature made overseas.

What changes when a company signs?

Company contracts take more preparation than personal ones. The foreign party often wants the notary to confirm not only who signed, but that the company exists and that the signer was authorised to bind it. The notary may check a current company extract using ASIC company information, the constitution where relevant, and a board resolution or power of attorney authorising the signer.

What the notary may need	Why
A current ASIC company extract	Shows the company is registered and who its officers are on the day
A board resolution or power of attorney	Shows the signer has authority to bind the company to this contract
The constitution, where relevant	Some constitutions limit who may sign or how
Photo ID for each signer	The notary must identify every person who signs
The receiving party's wording	Some registries prescribe what the certificate must state

Because these statements speak as at the day of the check, keep the steps close together. If the directors change before the contract is lodged overseas, the certificate may no longer match the register. Our document notarisation page covers company matters, and notarising a board resolution covers the resolution itself.

When are DFAT and an embassy involved?

DFAT is Australia's authority for apostille and authentication certificates; a notary does not issue them. For a notarised contract, DFAT verifies the notary's signature, stamp or seal, not the terms. The required route depends on the receiver, whether the Apostille Convention applies between Australia and the destination, and any embassy procedure.

Treaty relationships and procedures change, so check the HCCH status table and obtain current written instructions. DFAT's eligibility rules, charges and lodgement options are on Smartraveller. For how embassies handle a required final step, see consulate legalisation from Australia.

Can a contract be notarised remotely?

Do not assume so. Permission to witness certain documents by audiovisual link does not automatically permit every notarial act, and the rules differ by state and territory. The notary must confirm that the particular act is professionally and legally permitted in their jurisdiction; the overseas registry, bank or counterparty must separately accept the method. The Society of Notaries of New South Wales currently says notaries cannot witness document signing by Zoom. Many receivers still expect an original wet-ink signature. See the NSW society's current notice and our guide to online notarisation in Australia.

Common mistakes

• Signing before the appointment, so the signature has to be made again.
• Bringing an unfinished draft, so the appointment has to be rearranged.
• Assuming a JP can replace a notary. DFAT does not legalise a JP's certification, and a JP is not a substitute when the receiving authority expressly requires a notarial act.
• Arriving without evidence of a company signer's authority.
• Paying for translation before asking whether it is needed before or after the apostille.
• Missing pages. Bring the whole contract, including schedules and annexures.

How might an overseas contract matter work?

Consider a hypothetical Sydney company selling its stake in an overseas joint venture. The buyer's lawyers send a share transfer agreement and ask for it to be “notarised and legalised”. Before anyone signs, the company asks what “legalised” means and receives the required certificate wording and current destination process. Its authorised officers attend with photo ID, a current ASIC extract and the board resolution. The notary attests execution and authority. The company then obtains only the DFAT and embassy steps the written instructions require.

How much does contract notarisation cost?

The quote depends on the contract's length, number of signers and counterparts, certificate wording, company and authority checks, translation or interpreter needs, and any urgent or mobile attendance. DFAT, embassy, translation and courier charges are separate. Send the complete final contract and receiving instructions before booking so the notary can identify the work and quote accurately.

In short

A contract used in Australia rarely needs a notary. A contract relied on overseas often does, and then the receiving party decides the form. The notary confirms who signed, their identity and, for a company, their authority. DFAT then confirms the notary. None of those steps says the contract is fair or enforceable, so take legal advice on the terms before anyone signs.

Related questions

• How are business contracts notarised for use abroad?
• Does a lease agreement need to be notarised?
• When does a loan agreement need a notary?
• How is an employment contract notarised for a work permit?
• How are property contracts notarised for overseas registries?
• Should I post or courier signed legal documents?

Send us the complete final contract and written receiving instructions, with the destination country, signers, company details, your location and deadline. We can identify the notarial step and explain what remains for DFAT, an embassy, translation or courier before you book.