Is A Quotation Legally Binding? Australia Guide

Yes, a quotation can be legally binding in Australia if it has the key ingredients of a contract: a clear offer, acceptance, consideration, intention to create legal relations and certainty of terms. If the quote is only an estimate, is marked subject to contract, has expired, or hasn't been accepted properly, it may not bind either side.

If you run a business in Australia, you probably send quotes all the time for plumbing jobs, website builds, printing runs, catering, consulting projects or custom-made products. The risk is that a short document you thought was just pricing can become the whole contract, including the price, scope, deadlines and legal obligations your business must honour.

Is A Quote Legally Binding In Australia?

A quote isn't automatically binding just because it's written down. The real question is whether, viewed objectively, the quote was an offer that the customer could accept to create a contract.

In Australian contract law, a quotation can be:

• An offer: A clear proposal that's capable of acceptance, so a binding contract is formed when the customer accepts it.
• An invitation to treat: A starting point for discussions, where no contract exists until a later agreement is made.

Courts look at what a reasonable person would understand from the quote and the surrounding communications. Your private intention is less important than the words you used, the level of detail, what the customer did next and how your business responded.

Understanding the basics of offer and acceptance and the difference between an offer and an invitation to treat helps you control how your quotes operate legally.

Is Accepting A Quote Legally Binding?

Accepting a quote is legally binding if the quote is a valid offer and the acceptance matches the offer. That acceptance doesn't always need to be a signature.

For a quote to become a contract, these elements usually need to be present:

Clear Offer

Your quote should identify the goods or services, price, scope, timeframes, delivery details and any important conditions. The more complete and certain the quote is, the more likely it's to be treated as an offer.

Acceptance

Acceptance can happen by signing a quote, replying by email, clicking an online acceptance button, paying a deposit or telling you to proceed and then allowing the work to start. In many situations, an email can be legally binding, so treat messages like please go ahead, approved or we accept as potentially serious.

Consideration

Each side must give something of value. In most business quotes, this is straightforward: you provide goods or services and the customer pays the quoted amount.

Intention To Create Legal Relations

Commercial dealings are usually presumed to be intended to create legal relations. If you don't want a binding contract at the quote stage, use clear wording such as subject to contract or no binding agreement exists until a formal contract is signed.

Certainty Of Terms

A quote with vague scope, missing price, unclear timing or no acceptance process may be too uncertain to enforce. But a short quote can still be binding if the essential terms are clear enough.

Is A Quote A Contract?

A quote itself isn't always a contract. It usually becomes part of a contract when it's accepted. For example, if you send a detailed quote for $8,800 to install equipment by a certain date, and the customer signs it and pays the 30% deposit required, the quote is likely to be binding unless your wording says otherwise.

Is A Written Quote Legally Binding?

A written quote can be binding, but writing isn't the only factor. A written quote that says estimate only or subject to site inspection may not bind you to a fixed price. On the other hand, a short written quote with clear scope, price and acceptance terms can be binding once accepted.

Does A Company Have To Honour A Quote?

A company generally has to honour a quote if it has been accepted before it expires or is withdrawn, and the quote forms a binding contract. If no contract has formed, the business may be able to update, withdraw or correct the quote before acceptance.

This is where wording matters. A quote that says valid for 14 days, acceptance by signature and deposit, and subject to attached Terms of Trade gives everyone a clearer pathway. A quote that simply says approximate cost may leave more room to adjust if labour, materials or customer requirements change.

The NSW Supreme Court decision in Megalift Pty Ltd v Terminals Pty Ltd [2009] NSWSC 324 is often referred to in discussions about quotations. The practical lesson is that a document headed quotation can still have contractual effect when the words used, the surrounding communications and the parties' conduct show that a deal was made. Labels help, but they don't decide the whole question.

If a quote contains an obvious mistake, the outcome can depend on how clear the mistake was. A customer may not be able to snap up a price they knew, or should reasonably have known, was a serious error. But if the mistake wasn't obvious and the customer reasonably accepted the quote, your business may have a problem. A review process and a manifest error clause can help.

How To Draft Quotes That Protect Your Business

You can choose whether your quotes are intended to be binding on acceptance or only a step toward a later contract. The important thing is to make that choice clear.

Decide Whether It Is A Binding Quote Or Non-Binding Estimate

• If you want the quote to be binding on acceptance, say that the customer accepts by signing, clicking accept, paying a deposit or confirming in writing.
• If you don't want it to be binding yet, say that it's an estimate, is subject to further checks or is an invitation to treat only.

Set An Expiry Date

Prices change, suppliers run out of stock and staff availability shifts. Use a validity period, such as 7, 14 or 30 days. If a customer tries to accept after expiry, you can issue a revised quote with updated price and timing.

Spell Out Assumptions And Exclusions

Scope creep is one of the biggest causes of quote disputes. List assumptions, such as site access during business hours, customer-supplied content by a certain date, or standard materials only. Then list exclusions, such as approvals, travel, premium materials or third-party charges.

Explain The Variations Process

Include a simple rule: any changes to scope, timing or assumptions must be quoted and approved in writing before you proceed. If you later need to formalise changes, you can rely on a short variation process aligned with best practice for amending contracts.

Set Payment Terms And Deposits

State the deposit, milestones, due dates and accepted payment methods. For more detail on setting these terms professionally, see guidance on invoice payment terms and when late fees may be appropriate and lawful under Australian law.

If you intend to charge late fees, ensure your quote or contract explains them clearly and that they comply with Australian law. See the notes on charging late fees on invoices and broader late payment fee compliance.

Reference Your Terms

It's smart to attach or link your Terms of Trade or a tailored Quote Terms and Conditions to every quote. These should cover limits of liability, warranties, delivery terms, cancellation fees, IP ownership, confidentiality, payments and variations.

If you sell services or custom work, a separate Customer Contract can sit alongside your quote so even if price changes, core legal protections remain consistent.

Worked Example: A Quote, A Deposit And A Price Rise

Imagine you run a small fit-out business. You send a cafe owner a quote for $24,000 plus GST to build custom counters and shelving. The quote says it's valid for 14 days, the customer accepts by signing and paying a 40% deposit, standard laminate is included, stone benchtops are excluded, and variations must be approved in writing.

On day 10, the customer signs and pays a $9,600 plus GST deposit. At that point, your quote is very likely to be legally binding. You can't simply decide the job should now cost $29,000 because your workshop is busy.

Two weeks later, the customer asks to change from laminate to stone benchtops. Your quote excluded stone, so this is a variation. You price the change at an extra $4,800 plus GST and send a written variation for approval. If the customer approves, the contract price becomes $28,800 plus GST. If they don't approve, you should stick to the original agreed scope.

Now change one fact. Suppose your original quote said estimate only, subject to supplier pricing and site measure, no binding agreement until final contract is signed. The customer replies sounds good, but no site measure or final contract has happened. In that case, you have a much stronger argument that the quote wasn't yet a binding fixed-price contract.

This is why two quotes with the same dollar amount can have very different legal outcomes.

Changing Or Withdrawing A Quote After It Is Sent

Whether you can change or withdraw a quote depends on timing, wording and whether the customer has already accepted it.

Before Acceptance

You can generally revoke or update a quote any time before acceptance, unless you have separately promised to keep it open and that promise is enforceable. Communicate the withdrawal or revised quote clearly and in writing.

After Expiry

If your quote has expired, the customer usually can't force you to honour it simply by accepting late. Their late acceptance is generally treated as a new request or counter-offer, which you can accept or reject.

After Acceptance

Once a binding contract exists, you generally need the customer's agreement to change price, scope or timing. Use the variations process in your quote or terms. If you didn't include one, confirm any agreed change in writing and be clear about the impact on price and deadlines, consistent with the principles of amending contracts.

If You Need To Cancel

If you cancel after a contract has formed, you may be in breach unless your terms allow cancellation or the customer agrees. Clear cancellation terms in your Terms of Trade or Customer Contract help you manage deposits, costs already incurred and reasonable cancellation fees.

Consumer Law, Unfair Terms And Other Risks To Watch

Even if your quote forms a contract, your business still needs to comply with broader laws that protect customers and regulate commercial conduct in Australia.

Australian Consumer Law And Misleading Conduct

Any statement you make in a quote or sales conversation must be accurate. Under the Australian Consumer Law, you must not engage in misleading or deceptive conduct. Overstating results, hiding material fees, promising unrealistic timelines or leaving out important assumptions can create risk.

If you advertise or quote a price to consumers, make sure compulsory charges aren't hidden. If freight, call-out fees, minimum charges or third-party costs may apply, explain them clearly before acceptance.

Unfair Contract Terms

If your quotes incorporate standard terms for consumers or small businesses, those terms need to comply with the unfair contract terms regime. Since 9 November 2023, using or relying on unfair terms in eligible standard form consumer or small business contracts can attract penalties, not just make the term unenforceable.

For Australian Consumer Law purposes, a small business contract can be covered where one party employs fewer than 100 people or has annual turnover under $10 million. Risky terms include broad unilateral price changes, one-sided cancellation rights, unfair automatic renewals, excessive penalties and liability clauses that go further than reasonably needed to protect your legitimate interests. If your quotes incorporate standard terms, have them reviewed for Unfair Contract Terms risk.

Intellectual Property And Confidentiality

If you include custom designs, plans, creative concepts, software specifications or strategic ideas with your quote, state who owns the IP and what the customer can do with the material if they don't proceed. A brief confidentiality statement can help, though sensitive information may need a dedicated NDA.

Electronic Signatures And Acceptance By Email

Electronic signatures and email acceptance are widely used in Australia. Your quote can specify e-signature or email as valid acceptance methods. If you rely on click-through acceptance in a portal, ensure the customer can access the quote and terms before accepting and can keep a copy for their records, supporting enforceability alongside principles around electronic vs wet-ink signatures.

Quote Document Checklist And Fill-In Outline

A strong quote doesn't need to be complicated. It needs to be clear, consistent and connected to the right legal terms. You can also use a legal health check to spot broader gaps in your business documents and compliance setup.

Step-By-Step Checklist Before You Send A Quote

• Confirm Your Intent: Decide whether the quote is binding on acceptance, an estimate or subject to a later contract.
• Check The Essentials: Include customer details, your ABN or ACN where relevant, scope, price, GST treatment, timing and delivery.
• Add Conditions: List assumptions, exclusions, expiry date, deposit, payment terms, cancellation rules and variations process.
• Attach Or Link Terms: Make your Terms of Trade, Quote Terms and Conditions or Customer Contract available before acceptance.
• Check Legal Risks: Look for misleading statements, unfair contract terms, unclear IP ownership and any hidden fees.
• Record Acceptance: Use signature, email, click-through approval or deposit payment, and keep the record with the final quote version.

Fill-In Quote Outline

A lawyer should tailor your quote template to your business model, industry and risk profile, but a practical outline usually includes:

1. Business And Customer Details: Your legal entity, trading name, ABN or ACN, contact details and the customer's details.
2. Quote Status: State whether it's a binding quote on acceptance, an estimate, or subject to a formal contract.
3. Scope Of Goods Or Services: Describe exactly what is included, deliverables, quantities, specifications and locations.
4. Price And GST: Set out the total price, whether GST is included or added, and any known third-party costs.
5. Assumptions And Exclusions: Identify what the price relies on and what isn't included.
6. Timing And Delivery: Include start dates, milestones, lead times and any dependencies on the customer.
7. Acceptance Method And Expiry: Explain how the customer accepts and when the quote expires.
8. Payment Terms: Include deposit, instalments, invoice due dates, late payment consequences and accepted payment methods.
9. Variations And Cancellation: Set out how changes are approved and what happens if either party cancels.
10. Linked Legal Terms: Incorporate your terms covering warranties, liability, IP, confidentiality, privacy and dispute handling.

Key Takeaways

• A quotation can be legally binding in Australia if it contains the essential terms and is accepted in a way that creates a contract.
• Accepting a quote can happen by signature, email, click, deposit payment or conduct, depending on the quote and the circumstances.
• A company generally has to honour an accepted binding quote, but may be able to withdraw, update or correct a quote before acceptance or after expiry.
• Use expiry dates, assumptions, exclusions, clear payment terms and a written variations process to prevent scope and pricing disputes.
• Quotes and attached terms must still comply with the Australian Consumer Law, including misleading conduct rules and the unfair contract terms regime.
• Attach or link your core documents every time, including Terms of Trade, Quote Terms and Conditions and a Customer Contract where appropriate.

If you'd like help with quote terms, customer contracts, variations processes or unfair contract terms, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.