Handshake Deals: Are Verbal Agreements Legally Binding in Australia?

In business, momentum matters. When trust is high and the timing is right, it’s common to shake hands and get moving - especially with suppliers you’ve known for years or a customer you’re eager to onboard.

But here’s the catch: a handshake deal can leave your business exposed if something goes wrong. Prices shift, timelines blow out, and memories differ. So, are handshake agreements legally binding in Australia, and how can you protect your business without slowing deals to a crawl?

In this guide, we’ll unpack when a handshake deal is enforceable, the risks to watch, and practical steps to turn verbal promises into clear, written contracts you can rely on.

What Is A Handshake Deal?

A handshake deal is a verbal agreement or informal understanding between parties about doing business - for example, supplying goods at a certain price, starting a project next week, or extending credit terms.

There’s no formal written contract at the time of agreement. Maybe you exchanged a few emails or texts after the meeting, or just “left it to the relationship.”

This simplicity can feel efficient. However, it also creates uncertainty about the exact terms (and makes disputes harder to resolve). The key question is whether your handshake deal contains the elements of a legally binding contract.

Are Handshake Deals Legally Binding In Australia?

Short answer: sometimes, yes. Verbal agreements can be enforceable if the usual elements of a contract are present. Australian contract law generally looks for offer, acceptance, consideration (something of value), intention to create legal relations, and certainty of terms.

If those elements exist and nothing in law requires the deal to be in writing (some transactions do), a court may treat your handshake agreement as binding.

• Offer and acceptance: There must be a clear offer and a clear acceptance. If you’re unsure whether you’ve actually reached agreement, it’s worth revisiting how Offer and Acceptance works in practice.
• Consideration: Each party must give or promise something of value (e.g. payment for goods, services in exchange for a fee).
• Intention: In a business context, there’s usually a presumption that the parties intended to be legally bound.
• Certainty: The key terms must be sufficiently clear (price, scope, quantity, timing). Vague or “agreement to agree later” wording risks being unenforceable.

That said, proving a verbal agreement can be difficult. In a dispute, you’ll need evidence of what was said and agreed. Without written terms, that often becomes a “he said, she said” scenario.

If you’re weighing up whether a verbal deal might hold up, it’s useful to consider how courts view Verbal Agreements, including the importance of evidence, conduct, and follow-up communications.

What Are The Risks Of Relying On A Handshake Deal?

While some handshake deals work out fine, the risks tend to sit with the party that cares most about certainty - which is often the small business providing the goods or services.

1) Unclear Scope, Deliverables And Price

Handshake discussions move fast. If you don’t capture detail, you can end up doing extra work for free or arguing over what’s “included.” Lack of clarity also makes it hard to recover costs or enforce payment.

2) Payment Risk And Cash Flow Pressure

Without agreed payment terms (invoice timing, due dates, deposits, late fees), you’re exposed to delays. Chasing payment is harder if the customer disputes the deal.

3) Project Delays And Moving Goalposts

When timelines and dependencies aren’t nailed down, slippage becomes normal and accountability is vague. You may wear the delay costs even when you’re not at fault.

4) Liability And Risk Allocation

Most informal deals don’t address liability, warranties or indemnities. If something goes wrong, you may be responsible for more than you intended. Well-drafted contracts often include carefully balanced Limitation of Liability Clauses that protect you from open-ended risk.

5) Confidentiality And IP Ownership

If you share pricing, drawings or know-how without a confidentiality clause, you can lose control over how your information is used. Handshake deals rarely address intellectual property (who owns what).

How To Protect Your Business (Without Killing The Deal)

You don’t have to choose between “handshake speed” and “legal protection.” With the right habits, you can keep momentum and still capture the essentials.

Step 1: Confirm The Deal In Writing, Right Away

Send a short follow-up email that summarises the key terms you just agreed: scope, price, milestones, payment terms, timelines, responsibilities, and any assumptions. Ask the other party to reply “I agree.”

An email can create a written record of the agreement, and in some cases, it may even form a binding contract. It’s helpful to understand when an email can be treated as a contract by reading Is an Email a Legally Binding Document.

Step 2: Use A Short-Form Contract Or Heads Of Agreement

Where possible, attach a short, plain-English contract or a heads of agreement that covers the essentials. If you’re still negotiating finer details, a memorandum of understanding (MOU) can capture the current position - just be clear whether it’s intended to be binding or not. For context on how these documents differ, see MOU vs Contract.

Step 3: Build “Default” Terms Into Your Process

Have standard terms ready to go so deals never start from zero. For example:

• Customer engagement: a lightweight Service Agreement or Customer Contract with scope, pricing, IP and liability clauses.
• Product sales: online or offline Terms and Conditions and clear order forms or purchase orders.
• Confidentiality: a simple NDA for early-stage discussions and proposals.

Templates save time and keep your protective clauses consistent across every deal. They also reduce the chance of missing a key term under pressure.

Step 4: Set Payment Expectations Upfront

Include deposits for new customers, staged payments for projects, due dates, and consequences for late payment. If your cash flow depends on it, don’t leave it implied.

Step 5: Lock In Sign-Off And Change Control

Agree how deliverables will be reviewed and accepted, and how changes to scope will be priced and approved. If things change (they often do), capture the variation in writing. If you’re updating a contract already in place, make sure you’re following best practice for Making Amendments to Contracts.

Step 6: Use E‑Signatures So Nothing Slows You Down

Most commercial contracts can be executed electronically in Australia, which speeds things up and provides a clear audit trail. If you’re curious about how execution works, see the Legal Requirements for Signing Documents and the differences between Wet Ink Signatures vs Electronic Signatures.

What Should Your Written Terms Cover?

Your “short-form” contract doesn’t have to be long or complex. It just needs to address the issues that cause disputes. These are the core clauses most small businesses rely on.

• Scope and deliverables: What exactly will you provide, and what’s out of scope?
• Fees and payment: Price, deposit, invoicing, due dates, expenses, and GST. If relevant, set out late fees or suspension rights for non-payment.
• Timeline and dependencies: Milestones, deadlines, and what you need from the client to stay on track.
• Acceptance and warranty: How deliverables will be reviewed, defects rectified, and any warranties or disclaimers.
• Intellectual property: Who owns the result (code, designs, content) and what licence (if any) is granted.
• Confidentiality: Each party agrees to protect non-public information.
• Liability and risk allocation: Cap your liability, exclude indirect losses, and ensure indemnities are appropriate. Thoughtful Limitation of Liability Clauses are critical for risk management.
• Term and termination: How long the agreement runs and how each party can end it (including for non-payment or breach).
• Variations: A simple mechanism to approve and price changes to scope.
• Dispute resolution: A practical process (e.g. escalation and mediation) before court proceedings.

Keep it readable. Clear, plain language helps prevent misunderstandings - and makes enforcement easier if it comes to that.

When Do You Need A Formal Contract Over A Handshake?

Some deals are simply too risky or complex for a handshake. Strongly consider a formal contract when:

• The dollar value is significant or your costs are high.
• Delivery spans weeks or months, or has multiple milestones.
• There’s substantial IP creation or licensing involved.
• There’s safety, compliance or regulatory exposure (e.g. health, construction, privacy).
• You’re providing bespoke or non-refundable work (which is costly to redo).
• You need to share confidential information or trade secrets.
• You’ll rely on subcontractors or third parties to deliver parts of the job.

In these cases, a simple email summary isn’t enough. You’ll want clearly defined obligations, risk allocation and remedies if something goes wrong.

How Do You “Evidence” A Handshake Deal If Things Go Wrong?

If a dispute arises before you’ve got a signed contract, your next best friend is evidence. Start collecting (and keeping) a clear paper trail from day one.

• Follow-up emails and text messages that confirm what was agreed.
• Purchase orders, quotes, proposals, and acceptance messages.
• Meeting notes and summaries you sent after calls (and their replies).
• Invoices that reflect agreed pricing and payment terms.
• Conduct: e.g. the other party accepted delivery or used the work product.

These records can help demonstrate the existence and terms of the agreement. They also show you acted reasonably to keep the project moving.

Practical FAQs About Handshake Deals

Is a handshake deal always enforceable?

No. If key terms are too uncertain, if there was no intention to be legally bound (e.g. “subject to contract”), or if the law requires a written agreement for that type of transaction, the handshake may not be enforceable. The specifics matter - especially what you said and did after the shake.

What if we agreed to “sort the paperwork later”?

That phrase can cut both ways. If the essential terms are clear and everyone starts performing, a contract may have already formed. But if material terms were left open, a court may find there was no binding agreement yet. This is why confirming key terms immediately in writing is so important.

Can an email chain or purchase order become the contract?

Sometimes, yes. Courts often look at the whole exchange and conduct to decide whether the parties reached agreement. As a starting point, it helps to understand when an email can function as a binding agreement (see Is an Email a Legally Binding Document).

Do we need “wet ink” signatures?

Not usually. Many commercial agreements can be signed electronically in Australia. If you’re unsure what’s required for your document, check the Legal Requirements for Signing Documents and the practical differences between Wet Ink Signatures vs Electronic Signatures.

What if we want to document “intent” but keep it flexible?

Consider using a heads of agreement or an MOU that clearly states which clauses are binding (e.g. confidentiality) and which are not (e.g. future commercial terms). The labels matter less than the wording and the parties’ conduct - see MOU vs Contract for context.

Key Takeaways

• Handshake deals can be legally binding in Australia, but proving the exact terms is harder without a written record.
• The biggest risks are unclear scope, payment uncertainty and unbalanced liability - all of which a short, plain-English contract can fix.
• Protect momentum by confirming key terms by email, using short-form contracts, and building default templates into your process.
• Use e-signatures and clear variation processes so agreements stay fast and flexible as projects evolve.
• Include core clauses on deliverables, pricing, IP, confidentiality, and risk - especially a sensible limitation of liability.
• If a dispute arises, your evidence trail (emails, POs, invoices, conduct) can make or break your position.
• When in doubt, get tailored advice - especially for high-value, complex or long-running engagements.

If you’d like a consultation on moving from handshake deals to simple, enforceable contracts for your business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.