How Many Directors Must Sign Company Documents?

If you’re running (or setting up) a company in Australia, you’ve probably hit this question at some point: how many directors need to sign company documents?

It’s a worthwhile question, because the “right” signing method depends on what you’re signing, how your company is structured, and what your constitution (or replaceable rules) say. Getting it wrong can slow down a deal, cause bank or investor headaches, or even create uncertainty about whether a contract is enforceable.

In this guide, we’ll walk you through how director signing works in practice for Australian startups and SMEs - including the common signing rules under the Corporations Act, what changes for sole director companies, and how to set up clear internal processes so you’re not chasing signatures at the last minute.

Why “How Many Directors Need To Sign” Matters For Small Businesses

When you’re building a business, signing documents can feel like admin. But legally, the way a document is executed can affect:

• Whether the agreement is binding (and how easy it is to prove it later)
• Whether the other side can rely on the signature without asking for extra evidence
• Whether your bank, investor, landlord, or supplier accepts the document (many counterparties have strict signing requirements)
• Your internal governance - especially if you have multiple directors or shareholders

This comes up constantly for SMEs: lease documents, supply agreements, SaaS contracts, loan documents, NDAs, employment agreements, share issuances, shareholder resolutions, and more.

It also becomes important when your company grows. The signing method that works when you’re a solo founder might not be workable when you have three directors spread across different states - unless you set the rules and workflow early.

The General Rule: How Company Documents Are Signed In Australia

There are a few ways a company can sign documents. The “best” approach often depends on the document type, the counterparty’s expectations, and your risk tolerance.

1) Signing Under Section 127 (The Common “Company Execution” Method)

A common way for Australian companies to execute documents is by signing under section 127 of the Corporations Act. In practical terms, this is the method that many counterparties (banks, landlords, investors) look for because it provides a clearer pathway for them to rely on the signature.

Under this method, a company can 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 (whether or not the company has a company secretary).

So if your company has multiple directors, a common answer to how many directors need to sign is: two directors (unless there’s also a company secretary signing).

If you’re a sole director company, the answer is often: one signature (as long as your company is a proprietary company with a sole director, and the signatory is that director).

2) Signing Through An Authorised Agent (Director Authorises Someone Else)

A company can also sign contracts through an authorised person (an agent). This can include:

• a director signing alone (as an authorised agent)
• an employee signing (if properly authorised)
• a third party signing (less common, but possible)

This method can be perfectly valid, but the key issue is evidence. If the other party asks “who authorised this person to sign?”, you may need to show a board resolution, delegation instrument, or other proof.

For example, if your operations manager signs supplier contracts, you’ll want a clear internal delegation and a process you can produce quickly if queried.

3) Using A Common Seal (Less Common, But Still Possible)

Some companies still use a common seal. It’s not required for most companies anymore, and many startups never use one, but it can appear in older governance setups or where counterparties insist on it.

If your company uses a seal, you’ll also need to follow the rules for witnessing and recording the seal use (often set out in the constitution).

In most modern SME contexts, section 127 execution (or a properly authorised agent) is more common.

So, How Many Directors Need To Sign Under Section 127?

Let’s make it practical. If you’re specifically asking how many directors need to sign for a company to execute documents under section 127, here are the most common scenarios.

If Your Company Has Two Or More Directors (And No Sole Director Structure)

In most cases, the “cleanest” section 127 execution is:

• Two directors sign, or
• One director + one company secretary sign.

This is why many counterparties routinely ask for “two director signatures” - it’s a simple compliance check and reduces their risk when relying on the document.

If Your Company Has A Sole Director

Many startups begin with a single founder/director, sometimes with investors joining later.

If you have a sole director, section 127 allows execution by:

• that sole director signing on behalf of the company.

This is a very common setup for early-stage companies. The key is making sure your ASIC records accurately reflect who is appointed as director (and, if you do have one, who is appointed as company secretary).

If Your Company Has One Director And A Different Company Secretary

If you have one director, but you have appointed a different person as company secretary, then section 127 execution can be done by:

• the director signing (as sole director of a proprietary company); or
• the director and the company secretary signing together.

In practice, some counterparties prefer (or require) both signatures where a secretary exists, even if the sole director pathway is available. It’s worth checking the document requirements early so you don’t have to re-run execution right before a deadline.

What If Only One Director Signs When Two Were Expected?

This is where businesses can get stuck. If you have two directors and only one signs, the document might still be binding (depending on the circumstances), but:

• the other party may refuse to accept it until it’s correctly executed
• you may need to provide extra evidence of authority (like a board resolution)
• it can cause delays in settlements, finance drawdowns, or onboarding

From a practical standpoint, if a counterparty asked for section 127 execution and you don’t meet it, it’s often easier to correct the execution rather than argue about whether an alternative method is “still valid”.

What About Electronic Signatures And Online Signing?

Most startups and SMEs sign digitally now, especially when directors are remote or travelling.

In many cases, electronic signing is legally effective - but the key is matching the method to (1) the type of document and (2) what the other party will accept.

Electronic Signing Under Section 127

Australian law has evolved significantly in this area, including reforms designed to make electronic execution easier for companies. Section 127 can generally be satisfied electronically (for example, by signing an electronic version of the document, including in counterparts), provided the signing method used identifies the signatory and indicates their intention to sign.

That said, the practical reality is:

• Some counterparties are comfortable with electronic section 127 execution
• Some still insist on wet ink signatures for certain documents (especially finance and property-related transactions)
• Some require very specific formats (for example, signing the same PDF, or using a particular platform)

Before you assume digital signing is fine, check the document requirements and ask the other party early - this avoids last-minute re-signing just before a deadline.

Be Consistent With Your Signing Process

A simple internal policy can save a lot of pain. For example:

• Decide which contracts must be signed under section 127
• Set contract value thresholds that trigger “two director signatures required”
• Use a standard signing block in templates
• Keep a central register of executed contracts

If you have (or are adopting) a Company Constitution, it can also clarify governance and signing processes so you’re not relying on informal understandings between founders.

Common Startup Scenarios (And The Best Signing Approach)

Startups and SMEs often move fast, so it helps to match the signing approach to the type of decision you’re making.

Signing Day-To-Day Customer And Supplier Contracts

For everyday trading contracts, it’s common to authorise one director (or even a senior staff member) to sign, especially if:

• the contract value is low
• the contract is on standard terms
• your business needs speed and operational flexibility

But if the contract is high value, long term, or contains unusual risk (like broad indemnities or exclusivity), it’s often worth having it signed under section 127 for clarity.

For businesses selling online, you’ll also want properly drafted online terms so you’re not relying on ad-hoc agreements. Depending on your model, that could be Website Terms and Conditions and a Privacy Policy to cover data handling and customer rules.

Signing Leases, Loans, And High-Stakes Agreements

Commercial leases, finance documents, or major supply arrangements are where the “how many directors need to sign” question becomes very real.

In these contexts, counterparties frequently insist on section 127 execution (often two directors), because it reduces doubt about authority.

If you’re negotiating premises, timing is everything - and delays can be costly. If you’re at the stage of lease documents, it’s also worth understanding the practical issues around ending or changing lease arrangements later, including topics like breaking a commercial lease agreement.

Signing Employment Documents When Hiring Your First Team Members

When you start hiring, you’ll probably be signing:

• employment contracts
• policy documents
• confidentiality and IP clauses

Often, one director signs employment contracts on behalf of the company, but the bigger issue is making sure you have the right documentation and compliance settings in place from the start.

For example, a tailored Employment Contract helps clarify expectations, protect confidential information, and reduce misunderstandings as your team grows.

Signing Founder, Shareholder, Or Investment Documents

This is where governance really matters.

When you’re dealing with ownership and control - issuing shares, bringing on investors, or setting decision-making rules - you’ll usually be signing documents that need a higher standard of formality.

For example, a Shareholders Agreement often sits at the centre of how founders and investors make decisions, resolve disputes, and handle exits. If your execution is messy, it can create uncertainty exactly when you need certainty.

Similarly, if you’re transferring shares (say, between co-founders or to a family trust), there are process and documentation steps to follow. If that’s on your roadmap, how to transfer shares is a helpful starting point for understanding the moving parts.

Practical Tips To Avoid Signing Delays (And Disputes)

Even when you know how many directors need to sign, execution can still go wrong in practice. Here are some practical habits that make a big difference for SMEs.

1) Keep ASIC Details Up To Date

Counterparties often check ASIC to confirm who your directors and secretaries are. If your records are outdated, it can cause delays or lead to the other side questioning whether the signer has authority.

Make sure appointments, resignations, and address details are current.

2) Decide Your “Default” Execution Method

Pick a default approach so your team isn’t reinventing the wheel every time. For example:

• All contracts over $X must be executed under section 127
• All leases and finance documents must be executed under section 127
• Employment contracts can be signed by one director as authorised signatory

This is especially helpful once you have multiple directors or a leadership team.

3) Use Clear Signing Blocks In Your Templates

A surprising amount of confusion comes from unclear signature blocks.

If you want a document signed under section 127, the signing block should reflect that (for example, with two director signature lines, names, and titles). If you only include one signature line, you’re effectively creating a mismatch between what you want and what the document supports.

4) Document Delegations Of Authority

If someone other than two directors (or director + secretary) is signing, keep a written record showing they’re authorised. This might be a board resolution or an internal delegation instrument.

This is particularly useful if you’re onboarding new staff who need to sign customer agreements, supplier contracts, or purchase orders.

5) Don’t Confuse “Approval” With “Signature”

Startups often approve decisions informally (messages, Slack, emails) and then one person signs.

That can work operationally, but from a legal and governance standpoint you should separate:

• who approves entering into an agreement (board decision-making), and
• who signs the agreement (execution method)

As you grow, having this distinction will help with audits, investor due diligence, and internal accountability.

Key Takeaways

• If you’re asking how many directors need to sign, the most common “high certainty” method is signing under section 127 of the Corporations Act.
• Under section 127, execution is commonly done by two directors or a director and a company secretary.
• For many proprietary companies with a sole director, a single signature can be sufficient under section 127 (even if there is no company secretary), but your structure needs to match the legal requirements.
• A company can also sign through an authorised agent (including one director or an employee), but you may need evidence showing they were authorised.
• Clear signing processes, updated ASIC records, and properly drafted documents (like a Company Constitution, Shareholders Agreement, and Employment Contract) help prevent delays and reduce risk as your business grows.

If you’d like help setting up a clear signing process for your company documents or getting your contracts and governance documents in order, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.