This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
What is breach of warranty in contract law? Clear guide explaining warranties, legal consequences, damages, key differences from conditions and innominate terms, and how breach of warranty claims work in England and Wales commercial disputes.

A breach of warranty in contract law occurs when one party fails to comply with a contractual warranty, which is a term of the contract that is less fundamental than a condition. In England and Wales, breach of warranty does not normally allow the innocent party to terminate the contract, but it may give rise to a claim for damages.
This concept is particularly important in commercial contracts, consumer disputes, insurance agreements, and supply chains where contractual terms are carefully categorised to determine rights and remedies in the event of non-performance.
Meaning of a Warranty in Contract Law
A warranty is a contractual term that:
- Is less central to the contract than a condition
- Relates to a subsidiary or secondary obligation
- Gives rise to a right to claim damages if breached
If a warranty is broken, the contract continues to exist. The innocent party cannot usually treat the contract as ended solely because of the breach.
This distinguishes warranties from conditions, which go to the root of the contract and may allow termination if breached.
What Is a Breach of Warranty?
A breach of warranty occurs when:
- A party fails to perform a contractual promise classified as a warranty, or
- The performance does not meet the agreed standard set out in the contract
Examples include:
- Minor defects in supplied goods that do not affect their overall usability
- Delays that do not fundamentally undermine the contract
- Breaches of secondary contractual obligations
The key issue is that the breach does not deprive the other party of the main benefit of the contract.
Legal Effect of Breach of Warranty
The main legal consequence of a breach of warranty is the right to claim damages.
Unlike a breach of condition:
- The innocent party cannot usually terminate the contract
- The contract remains in force
- The focus is on financial compensation rather than ending the agreement
Damages aim to place the innocent party in the position they would have been in if the warranty had been properly performed.
Warranty vs Condition vs Innominate Term
Contractual terms are generally classified into three categories:
1. Condition
- Fundamental term
- Breach allows termination and damages
- Goes to the root of the contract
2. Warranty
- Minor or secondary term
- Breach allows damages only
- Contract continues
3. Innominate term
- Term where consequences depend on seriousness of breach
- If breach is serious, termination may be allowed
- If minor, only damages may be available
This classification was significantly shaped by case law such as Hong Kong Fir Shipping Co Ltd v Kawasaki Kisen Kaisha Ltd.
Examples of Breach of Warranty
1. Commercial supply contracts
A supplier delivers goods that are slightly below specification but still usable.
2. Service agreements
A service provider completes work but misses minor procedural requirements.
3. Insurance contracts
A policyholder breaches a secondary reporting requirement that does not affect the validity of the main claim.
4. Sale of goods
Minor defects or deviations from description that do not render the goods unusable.
These situations typically result in compensation rather than cancellation of the contract.
Remedies for Breach of Warranty
1. Damages
The primary remedy is financial compensation.
Damages may include:
- Direct financial loss
- Costs of rectifying defects
- Loss of profit (where foreseeable)
The goal is to restore the injured party to the position they would have been in if the contract had been properly performed.
2. Set-off or price reduction
In commercial disputes, the innocent party may reduce payments to reflect the diminished value of performance.
3. Continued performance of contract
Since the contract is not terminated, both parties remain bound to their obligations.
Time Limits for Breach of Warranty Claims
In England and Wales, limitation periods apply under the Limitation Act 1980:
- 6 years for simple contract claims
- 12 years for contracts executed as deeds
Time begins from the date of breach, not the date of discovery in most cases.
Failure to bring a claim within the limitation period usually prevents enforcement through the courts.
Breach of Warranty in Commercial Contracts
In business contexts, warranties are widely used to allocate risk. They often appear in:
- Share purchase agreements
- Service level agreements (SLAs)
- Construction contracts
- Supply agreements
- Software and licensing contracts
Warranties are frequently negotiated to:
- Limit liability exposure
- Define acceptable performance standards
- Provide predictable remedies for minor breaches
Exclusion Clauses and Limitation of Liability
Contracts may include clauses that:
- Limit damages recoverable for breach of warranty
- Cap financial liability
- Exclude certain types of losses (such as indirect loss)
Such clauses are subject to statutory controls, including:
- Unfair Contract Terms Act 1977 (in business contexts)
- Consumer Rights Act 2015 (for consumer contracts)
Courts assess whether limitation clauses are reasonable and properly incorporated into the contract.
Common Disputes Involving Breach of Warranty
1. Product quality disputes
Disagreements over whether defects are minor (warranty) or fundamental (condition).
2. Service performance issues
Claims that services were delivered but not to the agreed standard.
3. Contract interpretation disputes
Arguments over whether a term is a warranty or condition.
4. Financial loss calculation
Disputes over the extent of damages caused by the breach.
Practical Considerations Before Bringing a Claim
Parties typically assess:
- Whether the term breached is actually a warranty
- Whether damages can be quantified
- Whether loss is too remote
- Whether limitation clauses apply
- Whether evidence supports the alleged breach
These factors often determine whether a claim is viable or likely to succeed in court.
Common Questions from our Readers
Is every minor breach a breach of warranty?
Not necessarily. Classification depends on contract wording and legal interpretation.
Can you terminate for breach of warranty?
Generally no. Termination is usually only available for breach of condition or serious innominate terms.
Do warranties always involve written contracts?
Most commercial warranties are written, but they can also arise from implied terms in certain circumstances.
Can damages be large for breach of warranty?
Yes. Even minor breaches can result in significant damages if financial loss is proven and not too remote.
Final Thoughts
A breach of warranty occurs when a contractual term of secondary importance is not properly performed. In England and Wales, this typically gives rise to a claim for damages rather than a right to terminate the contract. The distinction between warranties, conditions, and innominate terms is central to determining legal remedies in commercial disputes. Understanding how warranties operate is essential for assessing liability, managing contractual risk, and resolving business disagreements effectively.