Section 127 Explained: Company Signatures And Document Execution In Australia

If you run a company in Australia, you’ll sign a lot of documents - customer contracts, supplier agreements, leases, funding paperwork, and sometimes deeds.

But there’s a practical problem many small business owners hit sooner or later: who can sign on behalf of your company, how should they sign, and what happens if the “wrong” person signs?

That’s where Section 127 (often written as s127) of the Corporations Act 2001 (Cth) comes in. It sets out one of the main ways an Australian company can validly execute documents. Getting s127 right can make your contracts easier to enforce, reduce delays in deal-making, and give the other side comfort that your document is properly signed.

Below, we’ll break down how s127 works in plain English, what it does (and doesn’t) do, and what to watch for when you’re executing documents as a company.

What Is s127 (Section 127) In Australia?

s127 is the section of the Corporations Act that explains how a company may execute documents.

In simple terms, s127 provides “signature rules” for companies - including who needs to sign and what combinations of company officers can sign.

It’s often discussed together with s129, because s129 provides “assumptions” that help other people rely on a company’s execution (more on that below). But for your day-to-day operations, s127 is the practical starting point: it’s the signing method many businesses use to avoid arguments about authority.

Does s127 Apply To Every Business?

s127 applies to companies (generally Pty Ltd and Ltd companies) regulated under the Corporations Act.

If you operate as a sole trader or partnership, s127 isn’t your signing rulebook - but if you do business through a company, it’s highly relevant.

What Does “Execute” Mean?

To “execute” a document means to sign it in the way the law requires for it to be treated as properly signed by that party.

Execution can matter a lot because some documents (especially deeds, guarantees, and certain formal variations) can have extra legal requirements compared to an ordinary contract.

Why s127 Matters For Small Businesses

When you’re busy running a business, signing can feel like admin. But execution problems can turn into very real legal and commercial issues.

Here’s why s127 is worth understanding if you run a company:

• It helps reduce disputes about authority: If execution is clearly done under s127, it’s harder for someone to argue later that the signatory wasn’t authorised.
• It speeds up deals: Banks, landlords, suppliers, and enterprise clients often prefer (or require) s127 execution so they can rely on it.
• It protects your company internally: Clear signing rules reduce the risk of team members “accidentally” binding the company to something they shouldn’t.
• It can affect enforceability: A contract may still be enforceable even if it wasn’t signed using s127, but poor execution increases uncertainty and legal cost if a dispute arises.

As your company grows and you sign higher-value documents, it becomes more important to have a consistent execution process (and to document who is allowed to sign what).

s127 And Your Internal Governance Documents

Your internal documents can influence how you manage signing and authority in practice.

For example, your Company Constitution may contain rules about directors, decision-making, and how authority is delegated within the company. Even where s127 is available, it’s still important that the signing process aligns with how your company is meant to operate internally.

Who Can Sign Under s127? (And How Many Signatures Do You Need?)

s127 sets out a few standard signing combinations. The key people involved are typically:

• Directors (including a sole director in a single-director company), and
• Company secretaries (if your company has one).

Under s127, a company may execute a document without using a common seal if it is signed by:

• Two directors; or
• A director and a company secretary; or
• For a proprietary company with a sole director, that sole director can sign alone (even if there is no company secretary).

These “standard combinations” are a big reason s127 is so commonly used. It creates a clear, recognisable signing method that other parties (and their lawyers) are comfortable with.

What If Your Company Only Has One Director?

Many small businesses have a company structure where there is just one director (and no company secretary), or one director plus one secretary.

If your company is a proprietary company (most Pty Ltd companies are) and it has a sole director, that sole director can generally execute documents under s127 by signing alone (regardless of whether a company secretary is appointed). If there is also a company secretary, the sole director can still sign alone, or the director and secretary can sign together.

Because these rules depend on your company type and officer appointments, if you’re not sure what’s recorded, it’s worth checking your ASIC company details and confirming who is formally appointed as director and secretary.

If your business has co-founders or multiple shareholders, it’s also worth setting clear expectations about decision-making and signing powers in a Shareholders Agreement, so there’s less risk of confusion (or conflict) later.

Do You Always Have To Use s127?

No - and this is one of the most misunderstood points.

s127 is not the only way a company can enter into a contract. A company can also sign through an agent or authorised representative under general contract law principles. For example, a director might authorise a manager to sign certain routine contracts.

However, the reason many businesses default to s127 is that it’s a clear statutory execution method and is often easier for the counterparty to rely on.

If you want to formalise when someone can sign on behalf of the company (especially if they’re not a director/secretary), an Authority to Act Form can be a practical part of your internal process.

How To Execute Documents Properly Using s127 (Including Electronic Signing)

Once you know who should sign, the next issue is how the document should be signed in practice.

Execution mistakes usually happen because the business is moving quickly (which is a good thing), but the signing process isn’t standardised.

Step-By-Step: A Simple s127 Execution Process

1. Confirm the company name is correct (including “Pty Ltd” and ACN/ABN details if required).
2. Check who is signing and whether they match an acceptable s127 combination (two directors, or director + secretary, or sole director for a proprietary company).
3. Use a clear execution block that states the company executes under s127 and lists the signers’ names and roles.
4. Make sure the signers use consistent names (e.g., the same name as recorded with ASIC, especially where initials, middle names, or short forms could cause confusion).
5. Keep a signed copy in a secure system (and make sure you can retrieve it later).

If you’re setting up templates for recurring agreements, it can help to have the execution clauses and signature blocks drafted properly from day one as part of your Contract Drafting process.

Does s127 Work For Deeds As Well?

Deeds are a common trap because they often look like “just another contract”, but they can have additional requirements depending on the circumstances.

A deed might be used for things like:

• certain settlement arrangements
• formal releases
• some guarantees/indemnities
• formal changes to existing agreements

If you’re changing an existing contract, it’s common to do this via a Deed of Variation (or a written variation agreement), and you’ll want to be especially careful about execution.

Electronic Signatures And s127

In modern business, you may be signing via e-signature platforms, email PDF signatures, or even secure workflow tools.

Electronic signing is widely used in Australia, but the “right” way to do it depends on:

• the type of document (contract vs deed)
• the other party’s requirements (some banks and landlords have strict rules)
• the signing method and evidence trail (audit logs, authentication, etc.)
• any additional rules that apply to the specific transaction (for example, where a document must be witnessed, or where the counterparty requires “wet ink” execution)

From a practical perspective, if you plan to rely on s127 execution electronically, you should make sure:

• the execution block clearly identifies each signer and their capacity (director/secretary)
• you can show who applied the signature and when
• your record-keeping is strong (store the final executed version and supporting evidence)

Deeds and certain high-stakes transactions can be more nuanced than standard contracts when it comes to electronic execution. Even if e-signing is available, the safest approach is to confirm the execution requirements upfront (including any witnessing, delivery, counterpart, and platform requirements) and ensure the other side will accept the method used.

If you’re ever unsure whether a document should be executed as a deed, or whether electronic execution is appropriate for a particular transaction, it’s worth getting advice before you sign - it’s often far easier to fix the process upfront than to argue about enforceability later.

Common s127 Mistakes (And How To Avoid Them)

Most s127 issues aren’t caused by bad intentions. They’re caused by growth, speed, and “we’ve always done it this way” habits.

Here are some of the most common mistakes we see (and how you can avoid them):

1. The Wrong Person Signs (Or Their Role Isn’t Clear)

A frequent issue is where someone signs thinking they have authority - for example, a sales manager signs a long-term contract - but the counterparty expected s127 execution or written authority.

How to avoid it: Maintain an internal signing policy that clearly states who can sign which types of documents and when s127 execution is required.

2. Only One Director Signs When Two Are Required

If your company has two directors, a single signature may not satisfy s127 unless your company qualifies for sole-director execution (for example, it’s a proprietary company with a sole director) or the other permitted signing combination is used.

How to avoid it: Before circulating a document for signature, confirm the company’s current director/secretary structure and use a signature block that matches it.

3. Confusing “Authority” With “s127 Execution”

A contract can sometimes still be binding even if not executed under s127 - for example, where someone has actual or apparent authority to sign for the company.

But relying on “authority arguments” after a dispute is rarely ideal.

How to avoid it: Use s127 execution as your default for higher-value or higher-risk contracts, and use written delegations/authority documents for routine operational signing.

4. Poor Signature Hygiene (Names, Dates, Versions)

Execution problems often come down to admin details, such as:

• signing the wrong version of a document
• missing pages or annexures
• undated documents where dating matters
• names that don’t match ASIC records

How to avoid it: Adopt a simple internal checklist: version control, annexures attached, correct company details, correct signers, final signed PDF saved in one place.

5. Assuming A “Normal Signature” Is Always Enough

For everyday arrangements, a simple signature may be fine. But where a document is large, long-term, or high-risk, parties often want stronger execution certainty.

How to avoid it: If there’s any doubt about whether a signature will be challenged later, treat execution as part of your risk management - not just admin.

If you’re unsure what counts as a legally acceptable signature in different contexts, it helps to understand the basics of valid signatures and how they interact with company execution methods.

Key Takeaways

• s127 (Section 127 of the Corporations Act) sets out a clear statutory method for a company to execute documents, including which company officers can sign and in what combinations.
• Using s127 execution can make it easier for other parties to rely on your company’s signature and can reduce disputes about authority later.
• Not every company document must be signed under s127, but it’s a practical default for higher-risk or higher-value contracts.
• Common s127 issues include the wrong person signing, not meeting the required signing combination, and poor version control or record-keeping.
• As your business grows, aligning your signing process with your internal governance (like your constitution and shareholder arrangements) helps keep execution consistent and compliant.

This article is general information only and does not constitute legal advice. Execution requirements can vary depending on your company structure, the type of document, and the specific transaction - get advice for your situation.

If you’d like a consultation on setting up a clean signing process under s127 or reviewing how your company executes contracts and deeds, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.