How To Legally Make a Contract in Australia

Making a contract is one of the most important things you’ll do as a business owner. Whether you’re signing a new client, engaging a supplier or hiring your first team member, a strong, legally binding agreement sets clear expectations and protects your interests.

If you’ve relied on handshakes or emails in the past, the process can feel daunting. The good news? With a clear structure and a few key legal principles, you can create contracts that are valid, enforceable and tailored to your business in Australia.

In this guide, we’ll break down what makes a contract legally binding, how to draft and execute one the right way, which laws you need to consider, and the essential agreements most businesses should have in place. By the end, you’ll know how to create contracts with confidence.

What Is a Contract and When Is It Binding?

At its simplest, a contract is an agreement intended to be legally enforceable. In Australia, a contract is binding when the core elements are present and the terms are clear enough to apply in practice.

• Offer and acceptance: One party makes a clear offer and the other accepts it on those terms. If you’re unsure what counts as an offer (versus an invitation to treat), it’s worth reading up on offer and acceptance.
• Intention: Both parties intend to create legal relations (not just a casual or social arrangement).
• Consideration: Each side exchanges something of value (money, goods, services or a promise). Note: deeds can be used where consideration isn’t available.
• Certainty: The essential terms are sufficiently clear (who does what, when, for how much, and key conditions).
• Capacity and legality: Parties have legal capacity (e.g. not minors for most contracts) and the agreement isn’t illegal or impossible to perform.

Do verbal agreements count? Sometimes, yes. If the core elements are present, a spoken agreement can be binding. The challenge is proof. It’s much harder to show what was agreed without a written record, which is why a written contract is strongly preferred. For more on this, see verbal agreements.

Are there contracts that must be in writing? Yes. Certain agreements generally need to be in writing and signed to be enforceable, including:

• Guarantees and indemnities (subject to state and territory legislation)
• Sales, transfers or other dealings in interests in land
• Some credit and finance agreements and consumer contracts (depending on the regime)
• Deeds (which must meet formal execution requirements)

Emails and online “click to accept” can form contracts, too. Courts will look at the overall evidence of agreement, intention and certainty. If you’re wondering where emails fit, this guide to whether an email can be legally binding is a helpful start.

Step-By-Step: How To Make a Contract in Australia

1) Define the Deal Clearly

Start with the commercial basics. What are you selling or buying? What are the deliverables, milestones and timelines? What will it cost, how will invoices work and when is payment due? Note any dependencies, approvals or acceptance criteria. The clearer you are now, the easier it is to draft precise terms later.

2) Choose the Right Type of Agreement

Match the contract type to the relationship. For example, for client work you’ll usually use a Service Agreement (or customer terms). For suppliers, look at a supply or distribution agreement. For collaborators or resellers, consider referral or reseller terms. For investment or co-founders, think about governance documents like a Shareholders Agreement or a partnership agreement. Picking the right format from the outset saves rework and confusion.

3) Draft the Essential Terms (In Plain English)

At minimum, your contract should cover:

• Parties’ correct legal names (company names and ACNs if applicable)
• Scope of the goods/services (what’s included, what’s excluded)
• Fees and payment (rates, milestones, due dates, late fees)
• Timing (start date, delivery dates, term, renewals)
• Obligations and service levels (your responsibilities and the other party’s)
• Changes and variations (how scope or pricing can change)
• Liability and risk (limitations, indemnities, insurance requirements)
• Intellectual property (who owns what, licences to use, moral rights if relevant)
• Confidentiality and privacy (how information is protected and used)
• Termination rights (for convenience and for breach)
• Dispute resolution (negotiation, mediation, jurisdiction, governing law)
• Execution (how it will be signed and dated)

Keep the language clear and specific. Vague or missing terms are a common source of disputes, especially around scope and pricing. If you’re using a template, tailor it to reflect the actual deal and Australian law.

4) Sense-Check Compliance and Fairness

Before you sign, check the contract against the laws that apply to your situation (more on these below). If you sell to consumers or small businesses, your terms must comply with the Australian Consumer Law’s rules on unfair contract terms, refunds and consumer guarantees. If you collect personal information, confirm whether privacy rules apply to you (some businesses are exempt; see the privacy section below). If staff are involved, ensure employment obligations are met.

5) Decide How You’ll Execute It

You can usually sign either in wet ink or electronically. Electronic signatures are widely recognised under Australian Electronic Transactions laws, but there are exceptions (for example, some land dealings, certain statutory declarations and, in some jurisdictions, deeds). It’s wise to understand the pros and cons of wet-ink versus electronic signatures before you choose your method.

If a company is signing, consider using the Corporations Act method so the counterparty can rely on the execution (for example, two directors, a director and company secretary, or a sole director/secretary) under section 127. This guide to signing under section 127 explains how it works in practice.

6) Store, Monitor and Update

Once signed, store the contract securely and calendar key dates (deliverables, renewal windows, price reviews). Nominate an owner internally to monitor obligations and performance.

If circumstances change, document it properly. Use a formal variation, side letter or a fresh agreement as required. Here’s a helpful overview of making amendments to contracts so changes remain enforceable.

Do I Need It in Writing, and Can I Sign Electronically?

Written is best. While verbal deals can be binding, a written contract provides the clearest evidence of what you actually agreed and makes enforcement far easier. Some agreements must be written (and signed) to be enforceable, such as guarantees, land transactions and deeds.

Electronic signatures are generally valid, provided you can identify the signer, show they intended to sign and keep a reliable copy. However, there are carve-outs and variations across states and territories. Deeds and certain property or statutory documents may still require specific formalities (like witnessing or paper originals). If you’re unsure, opt for wet ink or get advice before proceeding. When in doubt, keep a clear evidence trail: signed PDFs, audit logs, IP addresses and version histories all help.

What about emails or online acceptance? Courts look at the overall record. Agreements formed via email threads, e-sign platforms or “I agree” clickwrap can all be binding if the elements of contract formation are present. This article on emails being legally binding covers the main considerations.

What Laws Must Your Contract Comply With?

The legal landscape will vary depending on your industry and who you trade with. Key areas to consider include:

Australian Consumer Law (ACL)

If you sell goods or services to consumers or small businesses, your contract must align with ACL rules. This includes consumer guarantees (quality, fitness for purpose), remedies and restrictions on unfair contract terms and misleading statements. Your terms can’t exclude rights that the ACL gives customers.

Employment Law

If your contract relates to an employment relationship, it must comply with the Fair Work Act, National Employment Standards and any applicable modern awards or enterprise agreements. Use a tailored Employment Contract if you’re hiring staff, and consider policies for leave, conduct and safety.

Privacy and Data

Privacy obligations under the Privacy Act 1988 (including the Australian Privacy Principles) generally apply to businesses with an annual turnover of more than $3 million, and to some smaller businesses that handle sensitive information or operate in specific sectors (for example, health services). If the Privacy Act applies to you, you’ll need a clear and accessible Privacy Policy and compliant data practices. Even if you’re exempt, transparent privacy terms in your contracts can build trust.

Intellectual Property (IP)

Contracts should clearly state who owns the IP you create or receive and the licences each party gets. Address moral rights for creators where relevant. Avoid accidental transfers or gaps that could create disputes later.

Corporations and Electronic Transactions

If companies are parties, follow the Corporations Act rules for authority and execution. Electronic signing is widely accepted, but check any state-based exceptions for deeds and property documents before relying on e-signatures.

Industry-specific regimes (for example, financial services, health, building, liquor, transport) may also impose mandatory clauses or disclosures. If you operate in a regulated space, incorporate those requirements into your contracts from the outset.

Essential Contracts and Policies for Small Businesses

Every business is different, but these documents are common building blocks for reducing risk and setting clear expectations.

• Service Agreement or Customer Terms: Sets out scope, pricing, deliverables, IP, liability and payment for your clients. Start with a tailored Service Agreement if you provide services.
• Terms of Trade or Website Terms: If you sell products or operate online, these terms cover ordering, shipping, warranties, returns and acceptable use.
• Non‑Disclosure Agreement (NDA): Protects confidential information when sharing ideas, pricing or product specs with third parties.
• Employment Contract (or Contractor Agreement): Documents roles, hours, pay, confidentiality and post-employment restraints (if appropriate). Use an Employment Contract for employees; a separate agreement is needed for contractors.
• Supplier or Distribution Agreement: Manages pricing, delivery terms, quality control, defects and exclusivity with key suppliers or resellers.
• Shareholders or Partnership Agreement: If you have co-founders or investors, this governs ownership, decision-making, exits and dispute resolution so everyone stays aligned.
• Privacy Policy (if applicable): Required if the Privacy Act applies to you; recommended for transparency even if you’re exempt, especially if you run an online business.

You may not need every document on day one, but prioritise the contracts that govern your biggest risks and revenue. When in doubt, start with client terms, supplier terms and confidentiality, then layer on employment, privacy and governance documents as you grow.

Key Takeaways

• A contract is legally binding in Australia when there’s offer and acceptance, intention, consideration, certainty, capacity and legality - put it in writing wherever possible.
• Some agreements must be written and signed (for example, guarantees, land transactions and deeds), and emails or e‑signatures can be binding if legal requirements are met.
• Draft clear scope, pricing, timing, IP, liability, termination and dispute terms; tailor templates to your deal and Australian law.
• Check compliance with the ACL, employment, privacy (noting the turnover threshold and specific exceptions), IP and any industry rules before you sign.
• Execute correctly (consider section 127 for companies and any deed formalities), then store, monitor and vary agreements in writing when things change.
• Core documents for most businesses include client terms, supplier agreements, NDAs, employment contracts, governance agreements and a Privacy Policy where applicable.

If you would like a consultation on how to make a contract for your Australian business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.