Rescission Of A Contract
This guide explains what rescission means in contract law, when it applies, and how a contract may be rescinded.
Written by: Mark Lazarus, Commercial Lawyer, Director of Lazarus Legal
Last updated: 08 January 2026
Legal Disclaimer: The information on this page is general in nature and is not intended to constitute legal advice. It does not take into account your personal circumstances. Laws and legal processes can change, and their application varies between cases. You should seek independent legal advice before acting on any information on this page.
What Is Rescission In Contract Law?
Rescission is a legal remedy that treats a contract as though it never existed. When a contract is rescinded, both parties are returned to the position they were in before the contract was made. This differs from enforcing a contract (which requires the parties to fulfil their obligations) or terminating a contract (which ends future obligations but recognises that the contract existed).
The effect of rescission is to unwind the transaction entirely. If money has been paid, it should be returned. If goods or services have been provided, restitution may be required to restore the parties to their pre-contract positions. The aim is to reverse the consequences of the contract rather than to enforce its terms or calculate damages for breach.
When Is Rescission Available?
Rescission may be available when a contract was formed as a result of a vitiating factor, a fundamental defect that undermines the validity of the contract from its beginning. The most common vitiating factors are misrepresentation, mistake, duress, and undue influence.
Misrepresentation
A false statement of fact made by one party that induces the other party to enter the contract. The statement must be factual (not opinion), false, and relied upon.
Example: A seller claims that a business has 500 active customers and recurring revenue of $50,000 per month, when actual customer numbers are closer to 200 and revenue is declining. The buyer relies on these figures when agreeing to purchase the business.
Mistake
A serious error about a fundamental aspect of the agreement that means there was no genuine meeting of minds. The mistake must be significant enough to affect the contract’s entire basis.
Example: Both parties contract for the sale of commercial equipment believing it is located at a Sydney warehouse, unaware that the equipment was sold to another buyer and removed from the premises two weeks earlier.
Duress
Illegitimate pressure or threats that leave a party with no practical choice but to enter the contract. The pressure must be serious enough to override free consent.
Example: A supplier threatens to withhold essential goods unless a business signs a new contract on unfavourable terms, knowing the business will collapse without immediate supply.
Undue Influence
Taking advantage of a relationship of trust or authority to pressure someone into a contract. This typically involves exploitation of vulnerability or dependence.
Example: A company director uses their position of trust and superior knowledge to pressure a fellow director into signing a personal guarantee for company debts, without allowing time for independent advice or proper consideration.
Is Rescission An Equitable Remedy?
Yes. While rescission exists at both common law and in equity, it is most often treated as an equitable remedy in Australian contract law. This means rescission is discretionary, and a court may refuse it if granting rescission would be unfair in the circumstances.
The Importance of Conduct
A key feature of equitable remedies is that the conduct of the party seeking relief matters. Under the “clean hands” principle, a party who has acted improperly may be denied rescission even if a defect exists in the contract. Courts will consider whether the party seeking rescission has acted honestly and fairly.
Practical Implications
Because rescission is equitable, courts may refuse it where it is impractical or would cause undue hardship. In some cases, rescission may still be granted subject to conditions, such as requiring compensation where full restitution cannot be achieved.
The central point is that rescission depends on fairness and court approval, not merely on meeting technical legal requirements.
Rescission VS Termination Of A Contract
Rescission and termination are distinct remedies with different legal effects. Understanding the difference is important because choosing the wrong remedy can affect the rights and outcomes available to the parties. In some cases, a party’s conduct may amount to repudiation of a contract, which can give rise to termination rather than rescission, depending on the nature of the conduct and how the other party responds.
| Rescission | Termination | |
|---|---|---|
| Legal Effect | Treats the contract as though it never existed. The transaction is unwound and the parties are restored to their pre-contract positions. | Acknowledges the contract existed but brings it to an end. Rights and obligations that arose before termination remain enforceable. |
| When It Applies | Arises from problems at the formation stage, such as misrepresentation, mistake, duress, or undue influence. The defect exists from the beginning. | Arises from events after the contract is formed, such as breach of a key term, frustration, or the operation of a termination clause. |
| What Happens to the Contract | The contract is void or voidable. Its terms no longer govern the relationship between the parties. | The contract existed validly but ceases to operate going forward. Certain terms may continue to apply. |
| Rights and Obligations | Parties are entitled to restitution of what they provided under the contract. The aim is to reverse the effects of the transaction. | Accrued rights and obligations remain intact. The terminating party may be entitled to damages for breach. |
| Remedies | Restitution is the primary focus. The goal is to restore the original position, not to enforce the contract or award damages. | Damages for loss caused by breach or termination. The contract’s terms remain relevant to calculating entitlements and defences. |
What Is A Notice Of Rescission?
A notice of rescission is a communication from one party to the other stating that the contract is being rescinded. The purpose is to make clear that the innocent party is rejecting the contract and seeking to undo it, rather than affirming it or seeking other remedies. While notice is not always legally required, it serves an important practical function by establishing a clear date from which rescission is being claimed and demonstrating prompt action.
Delay in giving notice may weaken a rescission claim or suggest that the contract has been affirmed. Risks arise if notice is given incorrectly, too late, or inconsistently with the party’s conduct. For example, if a party gives notice of rescission but continues to act as though the contract is in force, a court may find that the contract has been affirmed. Legal advice is often necessary to ensure notice is properly given.
How to Rescind a Contract
The process of rescinding a contract depends on the specific circumstances, including the grounds for rescission and whether the other party agrees. In straightforward cases where both parties accept that rescission is appropriate, the contract may be undone by mutual agreement. In disputed cases, court involvement will typically be necessary.
- Identify the grounds for rescission. Rescission is only available where a recognised legal basis exists, such as misrepresentation, mistake, duress, or undue influence. Before taking any steps, it is important to identify the specific issue affecting the contract, as this determines whether rescission may be available and how it can be pursued.
- Assess any bars to rescission. The party seeking rescission must assess whether any bars exist that would prevent rescission. This includes affirmation of the contract, excessive delay, impossibility of restitution, or third-party rights acquired in good faith. Understanding these barriers early prevents wasted effort and potential legal exposure.
- Act promptly. Time is critical in rescission claims. The party seeking rescission should act as soon as the vitiating factor is discovered. Acting quickly demonstrates that the contract has not been affirmed and reduces the risk that circumstances will change in a way that makes rescission impractical.
- Give notice to the other party. Notice should be given to the other party in clear terms, stating that the contract is being rescinded and setting out the basis for rescission. The notice establishes a definitive point from which the party is rejecting the contract and helps avoid arguments about affirmation or delay.
- Restore benefits where possible. Restoring the parties to their original positions is central to rescission. This may involve returning money, goods, or other benefits received under the contract. In some cases, exact restitution is not possible, and the court may order financial compensation to achieve substantial restitution.
- Seek court involvement if necessary. If the other party disputes the rescission or refuses to cooperate, an application to court may be required. The court will determine whether the grounds for rescission are made out, whether any bars apply, and what restitutionary steps are required. Court proceedings may also be necessary where third-party rights are involved or where the contract's rescission has broader commercial implications.
What To Know Before Seeking Rescission
Before pursuing rescission, note the following practical and legal considerations:
- Rescission is a time-sensitive remedy. Delay in asserting a right to rescind may result in the right being lost, particularly if the other party has changed their position in reliance on the contract or if circumstances have evolved in a way that makes restitution impractical. Acting promptly after discovering a vitiating factor is critical.
- Conduct matters. A party who continues to act as though the contract is in force after discovering grounds for rescission may be found to have affirmed the contract, barring rescission. Affirmation can occur through express statements or through conduct that is inconsistent with an intention to rescind.
- Professional legal advice is often necessary before attempting to rescind a contract. The grounds for rescission must be clearly established, the timing must be appropriate, and the party's conduct must remain consistent with a claim for rescission. Incorrectly asserting a right to rescind can result in legal exposure, including claims for breach of contract.
Summary
- Rescission undoes a contract and restores parties to their pre-contract positions, treating the contract as though it never existed.
- It applies in specific circumstances where vitiating factors such as misrepresentation, mistake, duress, or undue influence undermine the contract’s validity.
- Rescission is an equitable remedy, meaning courts have discretion to grant or refuse it based on fairness, timing, and the conduct of the parties.
- Rescission differs from termination in that it treats the contract as void from the outset, while termination acknowledges the contract existed but ends future obligations.
- Notice of rescission serves an important practical function in establishing that a party is rejecting the contract rather than affirming it.
- Time and conduct are critical. Delay or affirmation may bar rescission, and restitution must be possible for the remedy to be granted.
About Mark Lazarus – Director, Lazarus Legal
Admitted in both Australia and the UK, Mark brings more than two decades of global legal experience to Lazarus Legal. Having worked as a barrister, in private practice, and as in-house counsel for a major international consumer brand he combines courtroom-honed advocacy with commercial insight. Specialising in commercial law, intellectual property and dispute resolution, Mark advises startups, creative businesses, and established enterprises on transactions, trademarks, contract drafting, and litigation strategy. His cross-jurisdictional background and history as a former in-house legal director give clients confidence that their legal issues will be managed with both strategic foresight and commercial realism.