Signing contracts is part of doing business, whether you’re onboarding a new client, hiring staff or closing a deal. But do you still need a pen on paper, or will an electronic signature do the job?
In Australia, the law does recognise electronic signatures in many situations - but there are some important exceptions and practical traps to avoid. Getting it wrong can delay a transaction or, worse, leave you with an unenforceable agreement.
In this guide, we’ll explain when electronic signatures are valid, when wet ink is still preferred or required, and how to choose the right signing method for your documents. We’ll also cover company execution rules, deeds, witnessing, and best practices to keep your contracts enforceable and easy to prove.
What Counts As a Signature Under Australian Law?
At its core, a signature is about proving three things: identity (who signed), intention (they meant to be bound), and authenticity (the signature is reliable and attached to the right document). That’s why a typed name, a digital squiggle, a scanned image of a handwritten signature, or a secure e-signature can all potentially work - if they meet those criteria.
Australian courts look at substance over form. In other words, they ask whether the act of “signing” was intended to authenticate the document in a reliable way, not whether a pen was used.
For a deeper dive into these fundamentals, see what makes a Valid Signature.
Are Electronic Signatures Legal in Australia?
Yes, for most business documents. The Electronic Transactions Act 1999 (Cth) and equivalent state and territory laws set out when electronic communications and signatures are legally effective.
Broadly, an electronic signature can satisfy a requirement for a signature if:
- The method identifies the person and indicates their intention to sign.
- The method is as reliable as appropriate for the purpose and circumstances (or is proven to be reliable in fact).
- The recipient consents to the use of electronic signing.
These are practical tests. In many cases, a reputable e-signing platform (with audit trails, timestamps and email verification) will cover them well. Even a simple “I agree” in an email can be enough for low-risk matters if intention and identity are clear - but it’s safer to use a robust method for important contracts.
To understand the general principles that apply to electronic execution, it’s worth revisiting the Legal Requirements for Signing Documents.
When Do You Still Need a Wet Ink Signature?
There are still scenarios where a pen-and-paper signature is required by law or is strongly recommended. The details vary by jurisdiction and document type, but common categories include:
1) Certain Land and Property Dealings
Some registries and land titles offices have specific execution and witnessing requirements. While e-conveyancing has advanced a lot, check the current rules for deeds or instruments to be lodged with a registry in your state or territory.
2) Wills, Powers of Attorney and Some Affidavits/Statutory Declarations
These often have strict witnessing and form requirements that may not be satisfied by electronic signing. Pandemic-era reforms introduced remote witnessing in some jurisdictions, but they remain document- and state-specific.
If you’re operating in New South Wales, for example, you can read more about how Remote Witnessing works in limited situations.
3) Deeds (Depending on Jurisdiction)
Historically, deeds needed to be on “paper, parchment or vellum” and executed in wet ink. Several states now allow electronic deeds, but the rules are technical and evolving. If you’re executing a deed, it’s best to confirm the requirements that apply to your entity type and jurisdiction at the time of signing.
For context and typical use cases, see our guide to what a Deed is under Australian law.
4) Notarisation, Apostille or Overseas Use
If a document needs to be notarised or sent overseas, foreign authorities may insist on original wet ink signatures. Always check the destination country’s requirements before signing.
5) Counterparty Preference or Contractual Terms
Even if the law allows electronic signatures, the other party can insist on wet ink. Your contract might also say that electronic signatures are not acceptable for certain documents. If you need flexibility, include clear signing mechanics up front.
How Do Companies Validly Execute Documents (Including Electronically)?
Company signing rules sit under the Corporations Act 2001 (Cth). Section 127 provides a streamlined way for companies to execute documents that counterparties can rely on. Reforms made electronic execution under section 127 a permanent feature, subject to certain conditions.
In short, a company can generally execute by:
- Two directors signing; or
- One director and one company secretary; or
- For a proprietary company with a sole director who is also the sole company secretary - that person alone.
These signatures can be applied electronically if the method reliably identifies the signatory and indicates their intention to sign the document, and the method is reliable for the circumstances. This can include split execution (different people signing different counterparts), and attaching electronic seals if you use one, subject to the Act’s requirements.
For a practical overview, see Signing Documents Under Section 127.
Many contracts also include a counterparts clause to make it crystal clear that each party can sign separate copies and together they form one agreement. If you’re relying on separate PDF copies or mixed wet ink and e-signatures, it’s good discipline to include clear wording and keep a clean final set. Learn more about agreements being Signed In Counterpart.
What About Deeds, Witnessing And Originals?
Deeds and witnessing are where most businesses get tripped up, because the rules are detailed and not fully uniform across Australia.
Deeds
Some jurisdictions now allow deeds to be created and signed electronically by individuals and companies. Others still require certain formalities, especially for individuals (like witnessing). There are also special rules for deeds executed by foreign entities.
Practical tips:
- Confirm the governing law in your deed and check the current rules in that state or territory for your entity type.
- If in doubt, use wet ink and a witness who can physically observe the signing (or follow any permitted remote witnessing procedure to the letter).
- Avoid mixing execution methods that create uncertainty (for example, inconsistent pages or missing witness details).
Witnessing
Some documents require a witness (or a specific type of witness) to be present when an individual signs. This can include deeds, declarations and certain regulatory forms. If a witness is required, make sure they sign at the same time and that their details are correctly recorded.
Remote witnessing is permitted in certain circumstances and jurisdictions (often with strict audiovisual and attestation requirements). As one example, see how Remote Witnessing in NSW works and which documents it applies to.
“Originals” And Evidence
For high-value or high-risk transactions, it’s common to keep a clean PDF that shows the full audit trail from your e-signing platform. If you used wet ink, scan and store the complete signed original and file the physical copy safely.
Best Practices For Using Electronic Signatures
If you’re adopting e-signing in your business (and most teams do), build a simple policy and follow consistent processes. This reduces risk and makes it easy to prove execution if there’s ever a dispute.
Choose A Reliable Method
Use a reputable platform that provides identity verification, timestamps, IP addresses, and a full audit trail. Avoid informal methods for important contracts (e.g. a low-risk email “I agree” might be fine for a quote acceptance, but not for a multi-year services agreement).
Get Consent
The other party must consent to electronic signing. You can include this in your contract boilerplate or simply confirm in writing before sending the document for e-signature.
Capture Intention Clearly
Make sure the actions a signer takes clearly indicate their intention to be bound. This could be ticking an “I agree” box and clicking “Sign”, or drawing/typing their signature in a designated field with affirmation.
Keep The Whole Document Together
Make sure the signed version includes every page, schedule and annexure. Don’t circulate signature pages separately without the full document, unless you have a clear process for attaching them to the agreed final form.
Use Counterparts And Electronic Signature Clauses
Include clauses that allow execution in counterparts and via electronic signatures. This pre-empts arguments later and speeds up completion.
Control Changes
Lock PDFs before signing. If you must make a handwritten change before signing, have all parties initial that change and sign the final version again so there’s a clean record.
Store Securely
Save the completed document and the platform’s certificate or audit trail. If you’re collecting customer or employee signatures online, make sure your Privacy Policy and data security practices reflect how you collect and store personal information.
Common Documents And How To Sign Them
Different documents carry different risk profiles and formalities. Here’s a quick, practical framework you can apply:
Everyday Commercial Contracts (e.g. customer agreements, supplier terms)
Electronic signatures are usually fine. Use a reliable platform, ensure both parties consent, and retain the audit trail. Where execution speed matters, enable counterparts.
Company Documents
If you want counterparties to rely on the Corporations Act presumption of due execution, execute under section 127 (electronically or in wet ink) using the appropriate signatories. For more complex corporate actions, your board may rely on your company’s constitution and board resolutions in addition to the execution block.
If you need a refresher on the mechanics, see Signing Documents Under Section 127.
Deeds (e.g. NDA as a deed, deed of release, deed of variation)
Proceed carefully. Confirm whether the governing law allows electronic deeds for your entity type, whether witnessing is required, and whether a wet ink original is preferred. If there’s uncertainty or cross-border elements, the safest option is often wet ink with an appropriate witness.
For background on when and why to use a deed, see our overview of a Deed.
Documents Requiring Witnesses
Check whether remote witnessing is permitted (and follow the exact process) or arrange in-person signing with a suitable witness. Record the witness’s full name and capacity where required.
High-Value Transactions
Use robust identity verification, require two-factor authentication on your platform, and maintain a completion checklist so you capture all signatories and schedules. If any filing with a registry is required, confirm upfront whether electronic signatures will be accepted.
Troubleshooting: Is My Electronically Signed Contract Enforceable?
If a party later argues “that wasn’t me” or “I didn’t agree,” you’ll want to show that your method identified the signatory, that they intended to sign, and that the method was reliable. In practice, that means:
- Using a platform that records email addresses, IP addresses, time/date stamps and a clear audit trail.
- Keeping the final, fully signed document (including all pages) and any completion statements.
- Keeping any related correspondence showing consent to electronic signing and intent to be bound.
If a contract is disputed because of execution mechanics (for example, one party didn’t sign correctly), the parties can sometimes confirm or re-execute the agreement. That said, it’s much easier to get it right the first time.
FAQs: Quick Answers To Common Signature Questions
Do I Need To Use The Same Method For All Signatories?
Not necessarily. One party can sign electronically and another in wet ink, especially if your contract has a counterparts clause. To reduce confusion, set the expectation upfront and ensure you keep a clean final set. For more on this approach, see agreements being Signed In Counterpart.
Can We Sign By Email?
Sometimes, yes. An email chain that clearly records agreement (and identifies the sender) can form a binding contract, especially for simpler matters. For more formal agreements, use a proper signature block or e-sign platform so your evidence is stronger.
Is A Typed Name Enough?
It can be, if it clearly identifies the person and shows intention to sign. But for important contracts, a platform that provides an audit trail is safer.
Do We Need Witnesses For Business Contracts?
Generally, no - most commercial contracts between companies don’t require a witness. Deeds and certain individual signings may require witnesses, so check your document type and governing law.
What If We Realised A Minor Error After Signing?
Avoid editing a signed document. Instead, prepare a short amendment or deed of variation (as appropriate), have all parties sign that correctly, and keep the paperwork together.
Key Takeaways
- Electronic signatures are valid for most business contracts in Australia if they identify the signer, show intention, and use a reliable method with consent.
- Wet ink may still be required or safest for certain land dealings, wills and powers of attorney, some affidavits/declarations, and deeds depending on the jurisdiction.
- Companies can sign electronically under section 127 of the Corporations Act, including split execution and counterparts, when the method is reliable.
- For deeds and witnessed documents, check the specific rules in the governing law and follow any witnessing or remote witnessing procedures strictly.
- Use a reputable e-sign platform, include counterparts and e-sign clauses, store the audit trail, and align your data practices with your Privacy Policy.
- If in doubt, choose the more formal option or get tailored legal advice before signing to avoid delays or unenforceable documents.
If you’d like a consultation about using wet ink or electronic signatures for your business documents, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.
