Executing Agreements In Australia: Essential Legal Insights

When you’re ready to finalise a deal, “just sign here” can feel like the easy part. But in Australia, how you execute (sign) an agreement matters just as much as what it says.

Getting execution wrong can make a contract unenforceable, delay a transaction, or create costly disputes down the track. The good news? With a few clear rules and a repeatable process, you can sign with confidence every time.

In this guide, we’ll unpack what “execution” means, who can sign, the differences between agreements and deeds, and practical steps to make sure your contracts are validly executed. Whether you’re signing as a sole trader, director of a company, or on behalf of a client, these essentials will help you get it right from day one.

What Does Executing An Agreement Mean In Australia?

Execution is the formal process of entering into a contract or deed. It’s the step that shows each party agrees to be legally bound by the terms.

In practice, this usually involves signing and dating the document, and sometimes meeting extra formalities such as witnessing, delivery (for deeds), or using the correct company signing method.

Australian law doesn’t require every contract to be in writing. However, important commercial agreements should be written and properly executed so you can clearly prove the deal, who is bound, and from when.

Agreement vs Deed (Why It Matters At Execution)

• Agreements: Typically require offer, acceptance, intention to create legal relations, and consideration (something of value exchanged). They’re usually signed by each party-no witness is required unless the contract says so.
• Deeds: Don’t require consideration and are used for certain promises (for example, a settlement or release). They attract stricter execution formalities (more below).

Understanding which type you’re using is key, because the execution block and formalities are different. If you’re weighing up which instrument to use, it helps to understand what a deed is in Australian law and what it’s designed to do.

Who Can Sign For A Company?

If you trade as a company, there are specific ways to execute documents so the other party can rely on them without needing to investigate your internal authority.

Using Section 127 (The Safest Default)

Companies can execute under section 127 of the Corporations Act 2001 (Cth). A company may sign a document by:

• Two directors; or
• A director and a company secretary; or
• A sole director (for single‑director companies, even if there is no company secretary).

This reflects recent reforms-so if you’re a sole director, you can execute under section 127 without also being the company secretary.

When a document is signed this way, the other party can assume it’s validly executed without digging into your internal approvals. Section 127 also supports electronic execution and split execution (each officeholder signing a separate counterpart), provided the method reliably identifies the signer and indicates their intention to be bound.

Using Section 126 (Authorised Agents)

Companies can also enter contracts through authorised agents under section 126. This is useful where a manager, in‑house counsel, or external lawyer signs “for and on behalf of” the company.

If you’re relying on section 126, make sure the person has actual authority (ideally in writing, such as a delegation or board resolution). Otherwise, you risk disputes about whether they had power to bind the company.

Don’t Forget Your Internal Rules

Your Company Constitution (or replaceable rules) may set out additional requirements for execution or delegation of authority. Ensure your signing process aligns with these rules and any internal delegations or board approvals before anything goes out for signature.

How Can You Sign? Wet Ink, E‑Signatures, Counterparts And Witnessing

Today’s contracts are often signed remotely, and that’s usually fine-if you follow the rules that apply to your document and your jurisdiction. Two key questions to ask are: how will we sign (wet ink or electronic) and do we need witnesses?

Wet Ink vs Electronic Signatures

Australia broadly accepts electronic signatures for most contracts, and companies can generally sign electronically under section 127 if the method used is reliable and the parties consent. For deeds, electronic execution is increasingly accepted but still depends on the party type (company vs individual) and state or territory rules.

If your counterparty prefers pen‑to‑paper, you can stick with traditional wet ink. For a practical comparison of both methods, see wet ink and electronic signatures under Australian law.

Signing In Counterparts

It’s common for parties to sign separate identical copies rather than one physical document. A counterparts clause makes this crystal clear, but even without one, many documents will still be valid if each party signs an identical copy and intends to be bound.

To avoid arguments about whether all signatures needed to be on the same page or in the same document, include a clear counterparts clause and follow sensible version control. Here’s a deeper dive into signing in counterparts.

Witnessing Requirements

Most simple agreements don’t need a witness. However, certain signatures-especially for deeds signed by individuals, or where the document requires it-must be witnessed by an eligible adult.

If your document calls for witnessing, follow the exact instructions: who can witness, where they must sign, and how they must identify the signatory. For a refresher, check the witness signature rules.

Remote And Hybrid Signings

Remote witnessing and electronic execution have expanded in recent years. The details vary by state and by document type (especially for deeds). If you’re signing across jurisdictions or with a mix of companies and individuals, build in extra time to confirm what’s permitted and plan the logistics.

Deeds Vs Agreements: What Changes At Signing?

Because deeds remove the need for consideration, the law expects greater certainty that the party intended to be legally bound-hence stricter formalities and, in some cases, witnessing or “delivery.”

Key Execution Differences For Deeds

• Wording: Deeds usually include language such as “executed as a deed.”
• Formalities: Depending on your state or territory, an individual’s deed may require witnessing by an eligible witness.
• Delivery: A deed often needs to be “delivered” (an act showing the signer intends to be bound). Many deeds include a clause saying delivery occurs on signing.
• Companies: Companies can generally execute a deed under section 127, including electronically and via split execution, provided the statutory conditions are met.

Common types include a Deed of Release and Settlement (to resolve disputes), a Deed of Assignment or Novation (to transfer contracts), and a Deed Poll (a one‑party deed, often used for promises to a group). If you’re preparing a one‑sided instrument, it’s helpful to understand deed polls and when they’re appropriate. For contracts being transferred, a Deed of Assignment is a common tool to use.

Which Should You Use-Agreement Or Deed?

Consider the purpose of the document, whether consideration will be exchanged, limitation periods for claims (deeds typically have a longer period), and the execution logistics (e.g. whether witnessing is practical). If you’re unsure, it’s best to get tailored advice before you lock in the format.

Practical Checklists For Common Signing Scenarios

Here are simple, repeatable checks you can run before pressing “sign.” Tailor them to your document and the mix of parties.

Company‑To‑Company Contract (Two Australian Companies)

1. Confirm correct legal names and ACNs for each company (and if acting as trustee, name the trust too).
2. Choose your execution method: section 127, section 126 (with documented authority), or a method specified by the contract.
3. Ensure the execution block matches your chosen method and party type (e.g., space for two directors, or one director if it’s a sole director company).
4. Decide on wet ink or e‑signature, and whether counterparts are permitted by the contract.
5. If the document is a deed, confirm any state‑specific formalities and include clear “delivery” wording.
6. Circulate final signable PDFs (no tracked changes) and lock in the signing order if signatures are interdependent.
7. File signed copies securely with version control, date‑stamping and, if e‑signed, the platform’s completion certificate.

SME And Individual (One Party Is A Person)

1. Check the individual’s full legal name (as it appears on official ID).
2. If a deed, confirm whether witnessing is required and who is eligible to witness in that state or territory.
3. Ensure the individual signs the correct execution block and dates their signature.
4. If an attorney holds a power of attorney, obtain a copy and make sure the attorney signs within their authority.
5. For e‑signing, verify the platform captures audit trails that identify the signer and time stamps the signature.

Cross‑Border Or Multi‑Jurisdiction Signings

1. Identify governing law and jurisdiction in the contract.
2. Check local execution rules for each signatory’s location-especially for deeds and witnessing.
3. Confirm whether electronic signatures are accepted for your document type in each relevant jurisdiction.
4. If a foreign entity is signing, consider requiring proof of authority (e.g., certificate of incumbency, board resolution or equivalent).

Using E‑Signing Platforms

1. Set the signing order and permissions so only intended signers receive the document.
2. Attach all schedules or annexures (and lock them) before sending.
3. Enable audit trails, and download the signing certificate for your records.
4. If the document requires witnessing, check your platform supports e‑witnessing that meets local legal requirements.

Housekeeping That Reduces Risk

• Initialling: If you’ve made minor handwritten changes, both parties should initial those changes (and each page if required). If you’re unsure of the process, here’s how to initial a document.
• Version control: Only circulate clean, final documents for signature.
• Dating: Avoid post‑dating or pre‑dating. Date the agreement when the last party signs (unless the contract specifies a different effective date).
• Record‑keeping: Keep an executed copy safely stored and easily accessible with any approvals and authority documents.

Common Pitfalls (And How To Avoid Them)

These errors come up frequently in execution and can undermine an otherwise well‑drafted contract.

Signing In The Wrong Capacity Or Using The Wrong Entity Name

Make sure the execution block matches who is actually entering the contract. If you’re contracting as trustee of a trust, say so. If the company, trust, or trading name has changed, update the contract before signing.

Assuming Someone Has Authority (When They Don’t)

Where you’re not using section 127, don’t rely on assumptions. If a manager or consultant signs under section 126, get evidence of their authority (for example, a signed delegation or board resolution) and ensure the execution wording reflects this.

Missing Witnesses Or Using Ineligible Witnesses

If a deed requires witnessing (especially for individuals), use a witness who meets the local criteria, and have them sign at the time the signatory signs-don’t backfill later.

Mixing Up Deed vs Agreement Formalities

When you switch a draft from “agreement” to “deed” (or vice versa), update the execution block, witnessing requirements and delivery clause to match. A deed signed like a simple agreement may not be enforceable as a deed.

Overlooking Counterparts Or Electronic Execution Rules

If there’s any chance parties will sign on different days or in different places, include a clear counterparts clause and confirm electronic execution is acceptable for that document and party type. Avoid practices that contradict what the contract permits.

Forgetting To Align Internal Approvals

Execution is the final step. If your board, shareholders or key stakeholders need to approve the contract, line up those internal sign‑offs before sending it out for signature. Your Company Constitution may spell out approval thresholds and delegations-stick to them.

Relying On Email “Agreement” (Without Proper Execution)

Emails can sometimes create binding contracts, but they may leave you exposed on terms, authority and proof. If it matters, use a formal document with proper execution rather than relying on an email chain.

Not Planning For Deeds

Deeds are powerful but formal. If you need to resolve a dispute or transfer a contract, consider whether a deed format is appropriate and plan the execution logistics early. Understanding the basics of a deed will help you avoid last‑minute surprises.

Key Takeaways

• Execution is how parties formally agree to be bound-get it right so your contract is clear and enforceable.
• For companies, section 127 is the safest default; it now allows a sole director to sign, and supports electronic and split execution.
• Section 126 lets authorised agents sign, but you should document their authority (e.g., delegation or resolution).
• Choose the right signing method: wet ink or electronic signatures, with clear rules for counterparts and, where needed, eligible witnesses.
• Deeds have stricter formalities than agreements; consider whether a deed is needed, and follow the correct process (including delivery and any witnessing).
• Standard templates, clear execution blocks, and strong record‑keeping reduce risk and speed up signings; align everything with your Company Constitution and internal approvals.

If you’d like tailored help with executing agreements in Australia, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.