Put And Call Options: Australian Businesses Explained

Put and call options aren’t just for the share market. In Australia, businesses use option arrangements to lock in commercial deals, manage timing risks, and give both parties certainty about how and when a sale will happen.

Whether you’re planning a future business acquisition, structuring a share buyout, or securing key assets, understanding how put and call options work can help you negotiate better terms and avoid costly mistakes.

In this guide, we break down what put and call options are, where they’re used in Australian business deals, how they operate in practice, and the key legal documents you’ll want in place before you sign anything.

What Is A Put And Call Option In Australia?

A put and call option arrangement is a pair of contractual rights:

• A call option gives the buyer the right (but not the obligation) to buy an asset at an agreed price within a set period.
• A put option gives the seller the right (but not the obligation) to require the buyer to purchase on agreed terms within a set period.

When you combine them in the same deal, you create a mechanism that ensures the transaction will proceed one way or another-either the buyer exercises the call, or, failing that, the seller can exercise the put. This is why put and call options are often used to “lock in” a future sale while giving both sides time to complete due diligence, satisfy conditions, or manage tax and financing timing.

In Australian commercial practice, option arrangements are usually set out in a deed (commonly called an Option Deed). Because deeds have specific execution and enforceability requirements, it’s important to understand what a deed is and how it must be signed to be valid.

When Would A Business Use One?

Put and call options can be useful anywhere you want certainty of future terms but need flexibility on timing. Common scenarios include:

• Buying or selling a business or division: You agree core terms now and complete later once due diligence, finance or regulatory approvals are in place. Options can sit alongside or lead into a formal Business Sale Agreement.
• Share transactions: Founders or investors can set up a staged exit or buy-in (for example, a future buy-back of minority shares). These can complement a Share Sale Agreement or be referenced in a Shareholders Agreement.
• Vendor finance structures: The seller provides time or finance while the buyer builds capacity to complete. Options can be paired with a Vendor Finance Agreement or security documents.
• Asset acquisitions: Reserving the right to acquire plant, IP, or other assets at a set price while approvals or funding are finalised.
• Joint ventures and strategic partnerships: Options can be used to manage future exit or buy-out rights between partners on pre-agreed terms.

The key benefit is clarity. Both sides know the price, timing, and process. If one party chooses not to move forward by exercising their option, the other party may still compel the deal by exercising the counter-option.

How Do Put And Call Options Work? (Step-By-Step)

1) Negotiate Heads Of Terms

Start by agreeing the commercial basics: what is being bought or sold, the price or pricing formula, timing, conditions, and any security. Many parties record this in a short-form document like a Heads of Agreement (usually non-binding except for confidentiality and exclusivity).

2) Execute An Option Deed

The formal terms are set out in an Option Deed. This should clearly define the option periods, the trigger events, how to exercise, what happens on exercise (including attaching the final form of sale agreement), and what happens if neither option is exercised by the end of the period.

3) Pay The Option Fee (If Any)

In many deals, the buyer pays an option fee for the call right. Sometimes the seller also receives a separate fee for granting the put. The deed should state whether the fee is refundable and whether it will be credited against the purchase price on completion.

4) Satisfy Conditions During The Option Period

Common conditions include finance approval, board or shareholder approvals, third‑party consents, or regulatory clearances. Parties often use the option period to complete due diligence and line up approvals before committing to completion.

5) Exercise The Option

To exercise, the exercising party must follow the exact process in the deed (for example, sending a written notice to the correct address within the option window). The deed typically says that, on valid exercise, the parties are taken to have entered the attached sale agreement on the agreed terms.

6) Complete The Transaction

Once exercised, the parties proceed to completion under the relevant sale agreement (business sale, share sale, or asset sale). It’s common to attach the agreed form of the Share Sale Agreement or Business Sale Agreement as a schedule to the Option Deed so there’s no ambiguity about the final terms.

Legal Issues You Must Get Right

Option structures are powerful, but the devil is in the detail. Here are the key issues we help clients tighten before they sign.

Clear Exercise Mechanics And Timelines

• Be precise about the option period (start and end times, time zones, and what happens if a deadline falls on a weekend or public holiday).
• Spell out how to give notice-who must receive it, where, and by what method. Consider allowing email plus a backup method to avoid disputes about delivery.
• Attach the final form of the sale agreement. This avoids last‑minute haggling after exercise, when leverage is reduced.

Option Consideration And Purchase Price

• Document any option fee and whether it’s refundable or credited on completion.
• Where price is adjustable (for example, completion accounts or earn‑outs), define the mechanism clearly to avoid post‑completion disputes.

Conditions Precedent And Exclusivity

• List any conditions that must be satisfied before exercise or completion (e.g. landlord consent, key customer novations, or financing approvals).
• Consider including exclusivity during the option period so the seller can’t negotiate with someone else while you invest time and money in due diligence.

Deed Formalities And Execution

• Options are often documented as deeds for enforceability. Make sure execution complies with Australian requirements, including any rules about wet ink vs electronic signatures and practicalities like signing in counterparts.
• If a company is signing, think about whether the Company Constitution or Shareholders Agreement imposes any approval steps or pre‑emptive rights that need to be addressed.

Security And The PPSR

• If the buyer pays a substantial option fee up front, you may want security over the business assets until completion or refund. A security interest should be documented (for example, in a General Security Agreement) and registered on the PPSR to preserve priority.
• Similarly, sellers offering vendor finance may require security. Timely registration of a security interest can be critical if the buyer becomes insolvent.

Tax, Duty And Pricing Structure

• Option fees and the underlying sale may have GST or stamp duty implications (especially for property or certain business assets). Get tax advice early so your pricing and payment milestones reflect the true net position.
• Consider whether you’re structuring a share sale vs asset sale. That choice can change tax outcomes, regulatory approvals, and the scope of warranties and indemnities.

Warranties, Indemnities And Disclosure

• Even though the option deed sets the framework, the heavy lifting for risk allocation usually sits in the attached sale agreement. Make sure warranties, indemnities, limitations of liability, and disclosure are aligned with your expectations.
• Be mindful of the Australian Consumer Law (ACL) during negotiations-avoid statements that could be misleading or deceptive, particularly in information memoranda or data rooms.

Fallbacks And Termination

• What happens if neither option is exercised by the deadline? The deed should say whether the option fee is forfeited, refunded, or partially credited.
• Consider default and termination events (for example, insolvency, breach of exclusivity, or material adverse change) and what remedies apply.

What Documents Do You Need In Place?

Every deal is different, but most option structures rely on a small set of core documents. Having these tailored to your transaction will save time and reduce risk when the option window is ticking.

• Option Deed: The primary document granting the put and/or call rights, setting the option periods, fee, exercise mechanics, conditions precedent, and attaching the agreed form of the sale contract. If you’re new to deeds, this primer on what is a deed in Australian law is a good place to start.
• Business Sale Agreement or Share Sale Agreement: The detailed terms that take effect on exercise (price adjustments, warranties, indemnities, restraints, employees, transition support). It’s common to schedule a Business Sale Agreement or Share Sale Agreement to the Option Deed so the final terms are locked in.
• Heads Of Agreement: A short document that captures the commercial deal at a high level, often used to frame the option terms and exclusivity before the lawyers draft the deed. See Heads of Agreement.
• Security Documents: If option fees or deferred consideration are at risk, a General Security Agreement and PPSR registration can protect your position.
• Shareholders Agreement / Company Constitution: For share options within an existing company, alignment with the company’s Company Constitution and any Shareholders Agreement is essential to avoid conflicts with pre‑emptive rights, tag/drag rights, or board approval thresholds.
• Ancillary Transfers And Assignments: Depending on the assets, you may need IP assignments, novations of key contracts, or consents from landlords, franchisors, or regulators to complete smoothly.

Because each of these documents touches different risks (price, timing, liability, security, and execution), we usually map the “deal flow” with you first, then build the documents around that plan so everything works together.

Practical Tips, Risks And Common Pitfalls

Keep The Timeframes Realistic

Option periods that are too short can create pressure, incomplete due diligence, and rushed financing. Build in enough time for third‑party consents and approvals, and consider extension mechanics (with or without a fee).

Lock Down The Final Form Agreements Early

Attaching the sale agreement in final form to the Option Deed avoids “agreement to agree” risks. If multiple schedules will change (for example, completion statements or disclosure materials), set a clear timetable and process for finalising them within the option window.

Be Precise About Notices

Many option disputes come down to whether the exercise notice was validly given. Triple‑check the notice clause, recipient details, and methods allowed. If you’re sending by email, confirm receipt and keep a record.

Align Funding And Security

If the buyer is raising funds, coordinate funding conditions with the option timetable. Where the seller is carrying risk (such as vendor finance or substantial deposits), use security and timely PPSR registrations to protect against insolvency risk.

Coordinate With Tax And Duty Advice

Option fees, assignment of options, and the ultimate transfer can each have different tax or duty consequences. Getting that advice before you sign the deed helps you structure the price, apportionment, and timing correctly.

Keep Stakeholders In The Loop

If you need internal approvals (board, investors) or third‑party consents (landlord, franchisor, key customers), start early and document responsibility for obtaining them. Your option deed should list these as conditions precedent and set deadlines to avoid last‑minute issues.

Have A Fallback Plan

What if the call isn’t exercised? What if the put is delayed? Build “what if” scenarios into the deed, including fees, break rights, and access to information so you can make informed decisions before time expires.

Key Takeaways

• Put and call options give both sides a structured pathway to a future transaction, balancing flexibility on timing with certainty on price and process.
• Use an Option Deed to set clear option periods, fees, conditions, and the exact mechanics for valid exercise, and attach the final form sale agreement to avoid ambiguity.
• Pay close attention to execution as a deed, notice requirements, and alignment with company documents and shareholder rights to keep the option enforceable.
• Plan for tax, duty, funding, and security early-PPSR registrations and well‑drafted security agreements can protect deposits and vendor finance.
• Clarify responsibilities for due diligence and third‑party consents during the option window, and include realistic timeframes and extension mechanics.
• If you’re unsure whether to structure as a share sale or asset sale, model both options since pricing, liability, and tax outcomes can differ.

If you’d like a consultation on structuring or documenting a put and call option for your Australian business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.