Yes. You can issue a letter of demand without a written contract in Australia. Many successful debt recovery actions proceed without a single signed document.
Australian contract law does not require contracts to be in writing to be enforceable. Verbal agreements, email exchanges, quotes, invoices, and conduct can all create binding obligations. If someone owes you money or has failed to deliver what they promised, you can demand payment or performance regardless of whether a formal contract exists.
How contracts are formed under Australian law
A contract is formed when there is:
- Offer — one party proposes terms
- Acceptance — the other party agrees to those terms
- Consideration — something of value is exchanged (typically money for goods or services)
- Intention to create legal relations — both parties intend the agreement to be binding
None of these elements require a written document. A handshake, a phone call, a text message, or an email thread can satisfy all four requirements.
Most everyday transactions happen informally. You do not need a lawyer-drafted contract to hire a tradie, order stock, engage a freelancer, or lend money. If the parties agree on the essential terms and act on that agreement, a contract exists.
What counts as evidence of an agreement
When there is no signed contract, you rely on other evidence to prove the agreement existed and what its terms were. Courts and tribunals regularly accept the following:
Emails and text messages
Email chains and SMS exchanges are powerful evidence. If you and the other party discussed scope, price, deadlines, or deliverables in writing, those messages form part of the contract.
Example: You email a web developer asking for a quote. They reply with a price and timeline. You reply “sounds good, let’s proceed.” That exchange creates a binding agreement.
Quotes and invoices
A quote sent by a supplier and accepted by a customer is a contract. The quote sets out the price, description of goods or services, and payment terms. Acceptance can be verbal, by email, or by conduct (such as allowing the work to start).
An invoice is evidence that goods or services were provided and payment is due. If the recipient does not dispute the invoice, it is strong proof of the debt.
Conduct and part performance
If both parties act as though a contract exists, the law will recognise it.
Example: You hire a tradesperson to renovate your bathroom. No written contract is signed, but the tradesperson completes the work and you pay a deposit. The work itself, the deposit, and the ongoing relationship all prove a contract existed.
Witness statements
If the agreement was made verbally in front of others, witness statements can corroborate your version of events.
Bank records and receipts
Payment records, bank transfers, and receipts show that money changed hands and support your claim that a contract was performed or breached.
Common scenarios where no written contract exists
Unpaid invoices for goods or services
You deliver products or complete work. You send an invoice. The customer does not pay. The invoice itself, combined with proof of delivery or completion, is sufficient to recover the debt.
Verbal agreements between businesses
Two business owners agree over the phone or at a meeting. One party performs their side of the bargain. The other does not. The agreement is enforceable, even if nothing was signed.
Freelance or contractor work
A client hires you based on an email exchange or a brief conversation. You complete the work. They refuse to pay. The email trail, the completed work, and any correspondence about scope or price form the contract.
Loans between individuals
You lend money to a friend or family member. No loan agreement is signed, but you have bank records showing the transfer and text messages where they acknowledge the debt and promise to repay. That is enough to issue a letter of demand.
Quotes accepted by conduct
A supplier sends a quote. The customer does not reply in writing but allows the supplier to proceed with the work or delivery. Acceptance by conduct creates a binding contract.
What to include in a letter of demand without a written contract
A letter of demand without a signed contract must clearly establish:
- What was agreed — describe the arrangement in plain terms (what you were hired to do, what goods were supplied, what money was lent)
- Evidence of the agreement — reference emails, quotes, invoices, text messages, or verbal discussions
- What you delivered — prove you performed your side of the agreement (completed the work, delivered the goods, transferred the money)
- What the other party owes — state the exact amount owed and how it was calculated
- Deadline for payment — give a reasonable timeframe (typically 7 to 14 days)
- Consequences of non-payment — state that you will commence tribunal or court proceedings if the debt is not paid
The letter should be factual, precise, and supported by attachments (copies of emails, invoices, quotes, bank statements, photos of completed work).
When a letter of demand is not appropriate
A letter of demand may not be the right tool if:
- The other party genuinely disputes that an agreement existed
- The terms of the agreement are unclear or contested
- The matter involves complex legal issues (such as partnership disputes, intellectual property, or employment law)
- The debt may be statute-barred under limitation laws
In these cases, consider seeking advice from a qualified Australian lawyer or proceeding directly to a tribunal application where both sides can present evidence.
How ClaimDone helps when there is no written contract
ClaimDone generates a professionally formatted letter of demand based on the evidence you upload, even when no signed contract exists.
You complete a short intake form describing the agreement, what went wrong, and what you are owed. You upload your supporting evidence: emails, invoices, quotes, text messages, bank statements, photos.
ClaimDone’s Proprietary AI Engine analyses your evidence, structures your claim, and drafts a letter. The letter is delivered automatically to the other party by email and registered post.
Fixed fee: $79. No subscription. Done in 60 minutes.
ClaimDone does not provide legal advice, but it gives you a professional, evidence-backed demand letter that increases the likelihood of payment without needing to hire a lawyer.
What happens after you send the letter
Most recipients pay within the deadline. A formal letter of demand signals that you are serious and prepared to take further action.
If they do not pay, your next step is typically a tribunal application. The same evidence you relied on in the letter of demand will support your tribunal claim. ClaimDone also offers a tribunal application service to prepare your case for filing in VCAT, NCAT, QCAT, SACAT, or your local tribunal.
Final word
You do not need a signed contract to enforce an agreement in Australia. Verbal arrangements, email exchanges, quotes, invoices, and conduct are all recognised as valid contracts under Australian law.
If someone owes you money or has failed to deliver on a promise, do not let the absence of a written contract stop you. Generate your letter of demand in 60 minutes with ClaimDone and take the first step toward recovering what you are owed.
Frequently Asked Questions
Can I issue a letter of demand based only on a verbal agreement?
Yes. Verbal agreements are legally enforceable in Australia. You will need supporting evidence such as emails, text messages, invoices, witness statements, or proof of part performance to demonstrate that the agreement existed and what its terms were.
What if the other party denies we had an agreement?
If they genuinely dispute that an agreement existed, a letter of demand may not resolve the matter. You may need to proceed to a tribunal or court where both sides can present evidence. Strong documentary evidence (emails, quotes, invoices, bank records) will support your case.
Are text messages and emails enough to prove a contract?
Yes. Australian courts and tribunals regularly accept emails and text messages as evidence of contractual agreements. If the messages show offer, acceptance, and the essential terms (price, scope, timeline), they form a binding contract.
Can I recover money I lent to a friend without a loan agreement?
Yes, as long as you can prove the loan occurred and that repayment was expected. Bank transfer records, text messages acknowledging the debt, and witness statements can all support your claim. A letter of demand is the first step in formal recovery.
Do I need a lawyer to issue a letter of demand without a contract?
No. You can issue a letter of demand yourself, or use ClaimDone to generate a professionally formatted letter based on your evidence. ClaimDone does not provide legal advice, but it structures your claim and delivers the letter automatically for a flat fee of $79.
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