How to Create a Signature for Business Documents in Australia

Your signature does more than “sign off” a document - it confirms your identity, signals agreement to terms, and can bind your business to important rights and obligations.

Whether you’re signing a client contract, a supplier agreement, or company resolutions, it’s worth taking a moment to set up a clear, reliable way to sign. Doing this properly reduces risk, speeds up deals, and helps you stay compliant with Australian law.

In this guide, we’ll walk through what counts as a valid signature in Australia, the differences between wet-ink and electronic signatures, how to create a business-ready signature step-by-step, and the key rules about who can sign and how.

Why Your Signature Matters In Business

In business, a signature is a core part of how agreements are formed and executed. It connects a person (or a company) with the document being signed and records their intention to be bound by it.

Get signatures wrong and you can run into problems - delayed deals, unenforceable contracts, or even personal liability if you sign without proper authority. Get them right and you’ll move faster with less risk.

Two big reasons to put a simple system in place now:

• Clarity: Your customers, suppliers and team will know exactly how documents should be signed and by whom.
• Compliance: You’ll meet the formalities for different document types (for example, deeds) and for company execution under the Corporations Act.

What Counts As a Valid Signature In Australia?

In Australia, a signature is generally valid if it clearly identifies the signer and shows their intention to be bound by the document. The law is flexible, and in many contexts both wet-ink and electronic marks can be valid - including typed names, stylus signatures, or clicking an “I accept” button, provided the circumstances demonstrate intent and reliability.

However, the specific legal requirements can vary depending on the type of document and how it’s being executed. It’s wise to confirm the legal requirements for the document you’re signing (for example, whether it’s a contract, a deed or a board resolution).

Key principles to keep in mind:

• Identity: The method used should reliably link the signature to the person who is signing.
• Intent: It must be clear the person intended to sign and be bound by that document.
• Integrity: The document should be protected from tampering after it’s signed (for physical documents, this is straightforward; for electronic, choose a secure tool).
• Formalities: Certain documents (such as deeds or statutory declarations) have extra rules about form, witnessing and wording. Make sure you meet them.

If you’re unsure whether an electronic signature will be accepted for your particular use case, check any relevant legislation, the counterparties’ requirements, and your internal policy. For example, banks or landlords may insist on original wet-ink signatures for some transactions.

Electronic Vs Wet-Ink: Which Signature Should You Use?

Both methods are widely used in Australia, and both can be legally valid. The best choice depends on the document type, counterparty expectations, and the systems you use.

When Wet-Ink Makes Sense

• When a counterparty specifically requires originals (e.g. some property or finance documents).
• Where the law or a regulator expects wet-ink (less common now, but still seen in some niche areas).
• When you need witnessing in person and logistics are simple.

To weigh these options, read this overview of wet ink vs electronic signatures under Australian law.

Why Electronic Signatures Are Now Standard

• Speed: Get documents executed in minutes, not days.
• Audit trail: Good platforms provide time stamps, IP addresses and certificate logs.
• Scalability: Easier to manage across remote teams and multi-party transactions.

Modern eSign tools can meet identity, intent and integrity requirements, which is why many businesses adopt eSign for most day-to-day contracts, and reserve wet-ink for limited exceptions.

Special Cases To Watch

• Deeds: Deeds have additional formalities. Company deeds can usually be executed electronically now, but check the rules and practice for your jurisdiction and counterparty.
• Company Execution: If you’re signing for a company, consider executing under the Corporations Act for strong evidentiary benefits (more below).
• Remote Witnessing: Some states permit audiovisual witnessing for specific documents. Check local rules if you need witnesses located elsewhere.
• Counterparts: It’s common to sign separate identical copies and treat them as one agreement. If you plan to do this, include a clause that the document may be signed in counterpart.

How To Create And Use Your Business Signature (Step-By-Step)

Here’s a practical, repeatable way to set up a signature that works across your business documents.

1) Decide How You’ll Sign (Wet Ink, eSign, or Both)

Adopt a default method for typical contracts (e.g. an eSign platform), and identify exceptions that must be wet-ink (e.g. certain finance or property forms). Make sure your team knows the default and the exceptions.

2) Create Your Signature Style

• Wet-Ink: Choose a consistent style for your handwritten signature. Keep it legible enough that it can be matched to your name, but distinctive to you.
• Electronic: Set up your eSign profile. Many tools let you draw with a mouse/stylus, upload an image of your signature, or generate a stylised name. Use the same version consistently.

If you use an image of your wet-ink signature for electronic signing, store it securely and limit access to prevent misuse.

3) Build a Clean Signature Block

A signature block should make it obvious who signed, in what capacity, and on behalf of whom. For individuals:

Signed by:
Name: Jane Citizen
Date: 

For companies, include the company name and the capacity of the signers. If you’re executing under section 127 (two directors, or a director and company secretary, or a sole director/secretary), reflect that in the block.

Executed by ABC Pty Ltd ACN 123 456 789 in accordance with section 127(1) of the Corporations Act 2001 (Cth):

Director: ___________________  Name:   Date: __/__/____
Director/Secretary: __________  Name:   Date: __/__/____

Using the Corporations Act method often brings evidentiary benefits, so it’s handy to understand section 127 company execution.

4) Confirm Authority To Sign

Only people with proper authority should sign for your business. Authority can come from their role (e.g. director), a board resolution, a power of attorney, or express delegated authority. For company agents, it’s important to understand execution by an authorised person under section 126 as distinct from section 127 company execution.

Decide who can sign what, document it, and make that policy accessible to your team.

5) Set a Simple Signing Policy

A short policy makes signing consistent across your business. It can cover:

• Which documents are signed via eSign and which via wet-ink
• Who can sign (and any value thresholds requiring a second approval)
• When witnessing is required and how to arrange it
• Naming conventions for files (e.g. “Supplier Agreement - Fully Executed - 2025-05-30”)
• Where executed copies are stored and who has access

This avoids confusion, reduces delays, and ensures the right formalities are followed.

6) Prepare For Special Formalities (Deeds, Witnessing, Initials)

• Deeds: Deeds often require particular wording, proper execution, and (for individuals) may require a witness. If you plan to use deeds, note the extra steps in your policy and make sure your team knows when a deed is appropriate.
• Witnessing: For documents that need witnessing, identify who can witness a signature in your state and what the witness must do (e.g. observe the signing, add name/address, and sign/date correctly).
• Initials: If you’re agreeing to last-minute edits or want to confirm changes to specific pages, understand how to handle initialling documents and version control properly.

7) Store Executed Copies and Audit Trails

Keep a final, fully executed copy for your records. For eSignatures, download the audit trail/certificate provided by the platform. Centralise storage (e.g. a secure “executed contracts” folder) so the right people can find the right version fast.

Who Can Sign For a Company? Authority, Witnessing And Common Pitfalls

Even with a great signature, the signing may not be effective if the wrong person signs, or if formalities aren’t met. Here’s how to avoid common traps.

Understanding Company Execution

For companies, there are two common ways to execute:

• Under Section 127: The company signs through two directors, or a director and company secretary, or a sole director who is also the company secretary. When you sign this way, counterparties can generally rely on that execution without needing extra proof. Learn how to structure your signature block for section 127 execution.
• Under Section 126: An individual (like an officer or employee) signs on behalf of the company if they are authorised to do so. The other party may ask for evidence of that authority. Read more about agent authority under section 126.

Both methods can be valid, but section 127 often reduces friction because the other side can assume the signatories had authority.

When Do You Need a Witness?

Most standard contracts do not require a witness. However, certain documents - like deeds signed by individuals - often do. If witnessing is needed, make sure the witness is eligible in your location and that they complete their part correctly. If you’re not sure, check a quick primer on who can witness a signature and what details they must add.

Remote, Counterpart and “Last-Minute” Signing

• Remote signing: If people can’t be in the same place, consider electronic execution. For documents that require witnessing, check if audiovisual witnessing is permitted for the specific document and jurisdiction.
• Counterparts: If parties will sign separate identical copies, include a clause that the document can be signed in counterpart and that together those copies form one agreement.
• Initialling changes: If edits are made after a document is prepared, have the parties initial the amended clauses or pages and keep a clear version history. When in doubt, reissue a clean final for signature to avoid confusion.

Common Pitfalls To Avoid

• Wrong capacity: Forgetting to note the capacity (e.g. director, sole director and company secretary) or the company’s ACN can cause doubt about the execution.
• Mixing roles: Avoid a single person signing twice as both director and company secretary unless they are actually appointed as both.
• Missing formalities for deeds: Deeds need extra care - use the correct deed wording and execution block, and arrange witnessing where applicable.
• Poor record-keeping: Not saving the full executed copy or audit trail can make enforcement harder later.

FAQs: Practical Questions About Business Signatures

Do I need to use the same signature every time?

Consistency is best. Using the same signature (or electronic profile) across documents makes it easier to verify identity and reduces disputes about authenticity.

Is typing my name enough?

Sometimes - it depends on context and whether the method clearly captures your identity and intent. Many eSign platforms pair typed names with additional verification and audit trails, which strengthens reliability. If in doubt, choose a more robust method or confirm the other party will accept it.

Can I sign on behalf of the company as a manager?

Only if you have authority to do so. Authority can be granted by the board, by your role (depending on internal delegations), or via a power of attorney. If you’re signing as an agent rather than under section 127 company execution, the other party may ask for evidence of that authority under the section 126 framework.

How do I handle page changes at the last minute?

If you must proceed, ensure all parties review the final wording and initial the amended pages correctly (see the guidance on initialling documents). Where possible, reissue a clean, fully tracked version for signature.

Do I need witnesses for standard commercial contracts?

Usually, no. For most everyday contracts, witnessing isn’t required unless the document itself demands it or you’re executing as a deed. When witnessing is required, confirm who can witness a signature in your jurisdiction.

Key Takeaways

• Your signature must identify you and show intention to be bound; check any additional formalities that apply to the document you’re signing.
• Both wet-ink and electronic signatures are commonly used in Australia; choose a default and outline any exceptions in a simple signing policy.
• Use a clear signature block (name, capacity, entity) and make sure the signer has proper authority - especially when signing for a company under section 127 or via an agent under section 126.
• Plan for special cases like deeds, witnessing, initials, and counterparts; store executed copies and audit trails in a secure, central location.
• When requirements are unclear or stakes are high, getting tailored advice on the legal requirements for signing can save time and reduce risk.

If you’d like a consultation on creating and implementing a simple, compliant signature process for your business documents, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.