What should be in a business contract in Australia? (And what makes one legally enforceable)
Last updated August 10, 2026
Learn what every legally enforceable business contract needs under Australian law, which clauses protect your business, what makes a contract void and when to get a lawyer's help.
What should be in a business contract in Australia? (And what makes one legally enforceable)
Last updated August 10, 2026
Learn what every legally enforceable business contract needs under Australian law, which clauses protect your business, what makes a contract void and when to get a lawyer's help.
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What must a contract include to be enforceable?
A legally enforceable business contract in Australia requires six essential elements. These are offer, acceptance, consideration, intention to create legal relations, capacity to contract and certainty of terms. Beyond enforceability, a well-drafted contract also needs specific clauses covering scope of work, payment, liability, termination and dispute resolution. Based on quote data from over 20 business contract lawyers on Bark across Australia in 2026.
Get your business contract drafted or reviewed by an experienced lawyer on Bark before you sign
The catch is that having a contract isn't the same as having an enforceable one. A single missing element or poorly drafted clause can leave you with little legal protection if the other party fails to deliver.
This guide explains the legal essentials every Australian business contract needs, along with the practical clauses that help protect your business when problems arise.
What makes a contract legally binding in Australia?
A contract is legally binding when it satisfies six essential requirements under Australian common law. Each is a threshold requirement, not an optional extra. If your agreement is missing even one, a court may find it unenforceable, leaving you with no legal remedy if the other party walks away or fails to deliver.
These six elements apply to all legal business contracts in Australia, whether they're written, verbal or electronic.
Essential elements of an enforceable contract (Australian common law)
Element | What it means | Common pitfall |
|---|---|---|
Offer | One party proposes specific, clear terms. | Vague quotes or general price lists don't always qualify as an offer. |
Acceptance | The other party agrees to those exact terms. | Changing any term creates a counter-offer, not acceptance. |
Consideration | Both parties exchange something of value. | A promise given for nothing ('gratuitous promise') isn't enforceable. |
Intention to create legal relations | Both parties intend the agreement to be legally binding. | Social and domestic arrangements are presumed non-binding. |
Capacity to contract | Both parties have the legal ability to enter the agreement. | Minors and certain circumstances involving mental incapacity can affect this. |
Certainty of terms | The agreement is clear enough to be enforced. | Courts won't fill in critical missing terms on your behalf. |
If you're contracting with a company rather than an individual, confirm that the person signing has authority to bind the business. A director generally can; not every employee can.
What should a business contract include?
The six legal elements establish that a contract exists. The clauses you include determine how well it protects your business if something goes wrong. Most contract disputes arise because the agreement doesn't address an issue that later becomes the source of a conflict.
Key clauses in a business contract
Clause | Purpose | What to check |
|---|---|---|
Scope of work or services | Defines exactly what's being delivered. | Specify deliverables clearly and list what's excluded. |
Payment terms | Sets amounts, due dates and consequences for late payment. | Include interest on overdue invoices; confirm GST treatment upfront. |
Term and termination | Sets how long the contract runs and how either party can end it. | Require written notice periods; include the right to terminate for cause. |
Liability and indemnity | Caps financial exposure and allocates risk between parties. | Unlimited liability provisions are worth pushing back on. |
Intellectual property | Clarifies who owns work created under the contract. | Critical for creative, technology and consulting arrangements. |
Confidentiality | Protects sensitive business information shared during the arrangement. | Define what counts as confidential and how long the obligation lasts. |
Dispute resolution | Outlines the process for resolving disagreements. | Requiring mediation before litigation can save significant cost. |
Governing law | Specifies which state or territory's law applies. | Particularly important for national or cross-border arrangements. |
The level of detail each clause needs scales with the value and duration of the arrangement. A one-off service agreement looks very different from a multi-year supply contract. The more money at stake and the longer the relationship, the more carefully each clause should be drafted.
Do business contracts need to be in writing to be enforceable in Australia?
Most contracts in Australia don't need to be in writing to be legally binding. A verbal agreement is fully enforceable, provided all six elements are present.
There are specific exceptions. Contracts for the sale of land, leases over three years and certain guarantees generally must be in writing. Outside those categories, a deal struck verbally across a meeting table can bind both parties as firmly as a signed document.
The problem with verbal agreements isn't legality; it's proof. Proving what was agreed becomes difficult if a dispute arises. Without a written record, it often comes down to one person's account against the other's.
Courts will consider the conduct of both parties, any text messages or emails exchanged, invoices, receipts and witness evidence to determine what the terms were. Winning a dispute over a verbal contract isn't impossible, but it's expensive and uncertain.
If you do agree to something verbally, confirm the terms in writing as quickly as possible. A follow-up email summarising 'as we discussed, the agreed terms are...' can serve as evidence if the arrangement is later disputed.
Is an email or quote a legally binding contract?
Under the Electronic Transactions Act 1999 (Cth), electronic communications including emails can form legally binding contracts when the six essential elements are present.
An email exchange can constitute a contract if it contains a clear offer and clear acceptance of those exact terms. A signed quote accepted in writing can also bind both parties, depending on how it's worded.
Electronic signatures are valid in Australia under state and territory electronic transactions legislation. A typed name, scanned signature or signing platform like DocuSign can all be valid, provided the signatory intended to be legally bound.
What are standard form contracts?
Standard form contracts are pre-written agreements offered on a 'take it or leave it' basis, with little or no room to negotiate individual terms. You'll encounter them when engaging contractors, signing software service agreements, entering commercial leases or dealing with larger suppliers.
There's nothing inherently unfair about a standard form contract, but they often contain terms that heavily favour the party who drafted them. The Australian Consumer Law (ACL), part of the Competition and Consumer Act 2010 (Cth), provides specific protections against unfair terms in these agreements.
What are unfair contract terms under Australian law?
Under the ACL, a term in a standard form contract is 'unfair' if it creates a significant imbalance in the parties' rights. It must also give one party more protection than is reasonably needed under the contract and cause detriment to the other party if relied upon.
The unfair contract terms regime was strengthened in November 2023, now applying more broadly to small business contracts. Businesses that include unfair terms face substantial penalties under the Competition and Consumer Act 2010 (Cth).
Common examples of contract terms that may be considered unfair include:
- Automatic renewal clauses with no notification requirement
- Excessive exit fees or termination penalties
- Broad clauses permitting a supplier to interpret their own obligations
Before signing a contract with terms that concern you, get it reviewed by a specialist.
What makes a contract void or voidable in Australia?
A void contract is treated as though it never existed. A voidable contract is legally valid but can be rescinded by one party under specific circumstances. The distinction matters because they lead to different legal remedies.
Common grounds for voiding or rescinding a contract in Australia
Ground | What it means | Effect |
|---|---|---|
Misrepresentation | A false statement induced you to enter the contract. | Generally voidable |
Duress | Threats or coercion were used to obtain your agreement. | Voidable |
Undue influence | One party used a position of power to override your free will. | Voidable |
Unconscionability | A serious power imbalance was exploited. | Voidable |
Mistake | Both parties shared a fundamental error about the subject matter. | May be void or voidable depending on the type of mistake. |
Illegality | The contract requires one or both parties to act unlawfully. | Void |
Lack of capacity | One party didn't have the legal ability to contract at the time. | Generally voidable |
These are common law grounds. The ACL also gives consumers and small businesses separate rights to challenge unfair terms in standard form contracts, operating independently of the grounds above.
What happens if a business contract is breached in Australia?
A breach occurs when a party fails to meet their obligations under the contract. The consequences depend on whether the term breached is a 'condition' (a fundamental term) or a 'warranty' (a less central term).
Breaching a condition typically gives the other party the right to terminate the contract and claim damages. Breaching a warranty usually entitles the other party to damages but not to terminate.
Remedies available for breach of contract in Australia include:
- Damages: financial compensation for the loss caused by the breach
- Specific performance: a court order requiring the party to fulfil their obligations, used where damages aren't adequate
- Injunction: a court order preventing a party from doing something, commonly used in intellectual property and confidentiality disputes
- Restitution: return of value where one party has been unjustly enriched at the other's expense
Most contract disputes are resolved before reaching court. Where a contract includes a dispute resolution clause requiring mediation or negotiation first, that process often resolves the issue at a fraction of the cost of litigation.
For answers to other common legal and financial questions affecting Australian businesses, visit Bark's Legal & Financial FAQs.
When should you get a lawyer to draft or review a contract?
For low-value, one-off transactions, a standard template may be sufficient. Professional legal review is worth considering when significant money, intellectual property, employment matters or an ongoing agreement are involved. Before engaging a lawyer, see Bark's contract lawyer cost guide to understand the typical cost of contract drafting and review services in Australia.
Professional legal review is particularly worthwhile in situations like these:
- Entering a commercial lease with a new landlord
- Drafting employment contracts or independent contractor agreements
- Establishing a shareholders' agreement or joint venture arrangement
- Reviewing a non-negotiable standard form contract with significant financial exposure
- Assessing whether a contract term is standard practice for your industry
Employment lawyers on Bark can assist with employment-specific agreements, while commercial law specialists cover the broader range of business contracts. Catching a problem before you sign is almost always less expensive than resolving a dispute after.
A legally enforceable business contract in Australia needs six elements. These are offer, acceptance, consideration, intention, capacity and certainty of terms. What the contract actually contains is what determines whether it protects you in practice.
For anything involving real money, an ongoing arrangement, IP or a contract you didn't get to negotiate, consider having a lawyer review it before you sign. It's a simple step that could prevent a much more expensive problem later.
FAQs
No, most business contracts don't require witnesses to be legally binding in Australia. Witnesses are required for specific documents including statutory declarations, deeds and wills, but not for ordinary commercial agreements. Having a witness can still be useful for high-value contracts, as it makes it easier to prove the document was actually signed if a dispute arises later.
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