In Australian contract law, an offer to treat (also called an invitation to treat) is a communication that invites the other party to make you an offer. It is not an offer itself, so the other side cannot accept it into a binding contract.
That distinction decides when your business is legally locked in, and it catches out a lot of small businesses. A product display, a price list, a quote and an online checkout all sit on different sides of the line, and the wording and process you use can push them across it. This article covers:
- what an offer is and the elements it needs
- what an offer to treat is and where the courts draw the line
- a worked example across a showroom, a website and a quote
- the misconceptions that cause most disputes
- when a lawyer is worth engaging to sort out your sales process
What is an offer to treat?
An offer to treat is a statement or action that invites the other party to make an offer. It signals that you are open to doing business without committing yourself to specific terms. Because it is not an offer, a customer who replies "I accept" has not formed a contract with you. The contract forms later, if at all, when one side makes a genuine offer and the other side accepts it.
For a business, the label decides how much control you keep. If your display, price list or advertisement is an offer to treat, you can still walk away before any contract exists. You can decline an order because you are out of stock, hold a transaction while a credit check runs, or correct a clear pricing error. If the same communication is an offer, a customer's acceptance can bind you on the spot, even before you start work.
Whether something is an offer or an offer to treat is judged objectively. A court asks what a reasonable person in the other party's position would have understood from your words and conduct, not what you privately intended. That is why a sales process that looks like an offer, for example an automated confirmation email that goes out the moment an order lands, can bind you even if you thought you were leaving room to change your mind.
What makes a communication an offer?
An offer is a clear promise to be bound on specific terms if the other party accepts. Three elements mark out a genuine offer:
- Clear and certain terms: the price, goods or services, quantities, timing and other key terms are defined well enough to be enforced
- Communicated: the other party receives, or otherwise becomes aware of, the offer
- Intended to be capable of acceptance: a simple "yes" concludes the deal without further negotiation
A binding contract also needs acceptance, consideration and an intention to create legal relations. For present purposes, the important point is that the offer fixes the terms, and acceptance fixes the moment you are bound.
The courts have long treated the intention to be bound as the critical question. In Carlill v Carbolic Smoke Ball Co [1893] 1 QB 256, the English Court of Appeal held that an advertisement promising a reward was a binding offer because its terms were sufficiently definite and it was clearly intended to be acted on without further bargaining. Most advertisements are not offers, but the case shows the flip side: an advertisement with definite terms and a clear intention to be bound can be one.
What makes a communication an offer to treat?
An offer to treat lacks one or more of those elements, most often the intention to be bound on acceptance. Instead of "if you say yes, we have a deal", it says "make me an offer". The classic situations are well settled:
- Goods displayed with a price: In Pharmaceutical Society of Great Britain v Boots Cash Chemists (Southern) Ltd [1953] 1 QB 401, the Court of Appeal held that a self-service shop display is an invitation to treat. The customer makes the offer by bringing the item to the counter, and the shopkeeper accepts by processing the sale. The customer can put the item back, and the shopkeeper can decline the sale.
- Advertisements: Generally an invitation to treat, because they are directed at the public at large and usually leave room for negotiation. The exception is a unilateral offer with sufficiently definite terms, as in Carlill.
- Tenders and requests for quote: An invitation to treat that invites suppliers to submit offers. The label does not mean no obligations at all: in Hughes Aircraft Systems International v Airservices Australia (1997) 76 FCR 151, the Federal Court held that a tender process can create its own contract, so the principal must evaluate tenders in accordance with the process it published.
- Online product listings: Usually structured so the customer's order is the offer and the business accepts by sending a confirmation or dispatching the goods. Whether that is the result depends on the website's terms and how the checkout flow actually works.
Worked example: one retailer, three sales channels
Take a Melbourne homewares retailer selling the same range through a showroom, a website and custom quotes.
In the showroom, a customer lifts a $450 lamp off the shelf and brings it to the counter. Under Boots, the display was an offer to treat. The customer made the offer at the counter, and the retailer accepted by processing the sale. If the lamp is sold out, or the ticket was misprinted, the retailer can decline the offer at the counter without breaching a contract.
Online, the same customer orders the same lamp. Whether a contract forms at checkout, on order confirmation or on dispatch depends on the website's terms and the checkout flow. If the terms say orders are accepted only when the confirmation email is sent, the retailer can still cancel before that point, for example after a failed fraud check. If the site says nothing, the question becomes what a reasonable customer would understand from the process, which is exactly the ambiguity worth removing.
For the custom quote to reupholster a three-seater sofa, the answer depends on presentation. A detailed quote with a fixed price that says it is valid for 14 days is likely an offer, and the customer's "yes, go ahead" accepts it, binding the retailer even before work starts. If the retailer wants room to adjust the price after measuring, the document needs to be an estimate or a quote expressly subject to confirmation and final inspection, and the business must actually operate that way.
Misconceptions that cause real disputes
A handful of beliefs keep resurfacing in disputes over whether a contract was formed:
- "A price tag makes it a binding offer": Wrong. Displaying goods with a price is an offer to treat, so you can refuse a sale at the till. But the label does not let you advertise prices you cannot honour. Under s 35 of the Australian Consumer Law (the ACL, which is Schedule 2 of the Competition and Consumer Act 2010 (Cth)), you must not advertise goods at a specified price if there are no reasonable grounds to believe you can supply them at that price for a reasonable period and in reasonable quantities, and if you do advertise, you must offer them at that price for a reasonable period.
- "If it is only an offer to treat, consumer law does not apply": Wrong. The ACL regulates conduct, not just contracts. Section 18 prohibits misleading or deceptive conduct in trade or commerce and applies to advertising and pre-contract conduct, so repeatedly advertising a price you cannot honour can breach the ACL even if no contract ever formed. Pricing displays also carry their own rules: s 48 requires a single total price to be specified prominently for consumer goods where a part of the price is represented.
- "Wording like 'subject to' protects me": Only if it reflects reality. "Subject to availability" or "subject to confirmation" signals an offer to treat, but if you always confirm instantly and never decline orders, a court may find that your actual process created an offer anyway.
- "Once the sale happens, my contract terms are everything": Not for consumers. The ACL's consumer guarantees apply to goods and services supplied to consumers regardless of what your terms say. Section 54 guarantees acceptable quality and s 55 guarantees fitness for a disclosed purpose, and you cannot contract out of them.
- "Only written communications can create offers": Wrong. A spoken statement, such as "we can do that for $X", can be a binding offer if it is sufficiently certain and intended to be accepted. Written terms do not stop an offer existing, but they do stop disputes about what was agreed, when, and at what price.
When to get a lawyer involved
The offer and offer to treat distinction is only useful once it is built into how your business actually sells. That is where a contract lawyer earns their fee. A lawyer can review your website terms so the acceptance point is explicit (the order is an offer, the confirmation is the acceptance), and can draft provisions for pricing errors and stock shortfalls so a misprint does not turn into a dispute. They can also look at your quote and estimate templates, checking that the wording matches your intention to be bound, and review promotions and pricing displays for compliance with s 18, s 35 and s 48 of the ACL.
The practical payoff is operational. Instead of staff improvising promises at the counter or on the phone, the sales process itself says when a deal is done, what happens when stock runs out, and how quotes can be varied. That removes most of the arguments before they start, and it is far cheaper than defending a claim about whether a contract existed.
Ask this before your next quote goes out
Before your next quote, price list or product page goes live, ask one question: if the customer said "yes" right now, would you have a contract on terms you can deliver? If you are not sure, that uncertainty is the risk. The answer will usually be found in three places: your quote wording, your checkout flow and your standard terms. A short review of those documents will pin the answer down, and it is a lot less expensive than arguing about it after the fact.