Inducing Breach of Contract in Singapore: Suing a Competitor Who Made Your Supplier or Customer Walk Away

Short answer: In Singapore, you can sue a competitor in tort if it knowingly procured or induced your supplier or customer to break its contract with you, without reasonable justification, and you suffered damage. The other party must actually have breached the contract. Proving what the competitor knew and intended is usually the hardest part.

Losing a key supplier or customer is painful enough. It is worse when you learn that a rival offered a better deal on the condition that the other party walks away from its agreement with you. Inducing breach of contract in Singapore is a civil wrong (a tort) that lets the injured business pursue the person who caused the breach, not only the party who broke the contract. This guide explains the elements, the evidence to collect, how it differs from other claims, the remedies a court can grant and who does what once a dispute starts.

Raffles Corporate Services works with a panel of experienced Singapore law firms who offer cost-effective and efficient legal service and advice. This article is general information only and is not legal advice.

What is inducing breach of contract in Singapore?

It is a tort committed by a third party who deliberately causes someone to break a contract with you. You keep your contract claim against the party that breached, and you may also have a separate claim against the person who caused it.

The classic business example is a competitor that approaches your exclusive distributor, supplier or long-term customer and persuades it to stop performing, for instance by offering better terms while knowing about the exclusivity or minimum-purchase promise. The competitor is not a party to your contract, so you cannot sue it for breach of contract. The law of tort fills that gap.

Ordinary competition is different. Quoting a lower price to a customer who is free to leave is lawful. The tort bites only when the third party knows about the contract, intends the breach and succeeds in bringing it about. If your real concern is a departing employee, see our sister-site guides on a former employee taking clients and confidential information and on springboard injunctions, which are treated separately.

What must you prove to succeed?

You must prove a valid contract, a breach of it by the other party, and that the defendant knowingly procured or induced that breach, to your damage, without reasonable justification or excuse.

In Gurpreet Gill Maag and others v McKee, Ian [2025] SGHC 221, the High Court set out the test by reference to the Court of Appeal’s decision in Tribune Investment Trust Inc v Soosan Trading Co Ltd [2000] 2 SLR(R) 407 and a 2024 High Court decision, Lim Seong Ong and another v Panshore Engineering Pte Ltd and another suit [2024] 5 SLR 1388. You can read the full text of the 2025 judgment on eLitigation. The table below turns the test into practical questions.

Because the wording of the test comes from case law, the court applies it to the facts of each dispute. A law firm can tell you how a particular judge is likely to treat borderline facts, such as a competitor who knew of a customer relationship but not of its exact terms.

Does your supplier or customer have to have breached first?

Yes. The claim against the inducer rests on a finding that the contract party actually breached, so you cannot succeed without proving that breach.

The High Court made this point in Gurpreet Gill Maag. The claimants said the defendant had caused a company to breach a confidentiality clause, but the company was not a party to the proceedings. The judge held that the inducement claim failed because he could not find that the absent company had breached the contract, and that the company would have to be joined and found to be in breach for the claim to have a chance. He read the earlier Lim Seong Ong decision as not saying otherwise: there, the court was satisfied that the director had not induced a breach, so it did not need to decide whether the company had breached.

For a business owner, the lesson is practical. Before suing the competitor alone, ask your lawyer whether the supplier or customer should also be a defendant, or at least a party, so that the breach can be decided. That choice has commercial consequences, because suing a customer you still want to deal with may not be sensible. Your lawyer should weigh it early.

How is this different from suing the supplier or customer?

A contract claim targets the party that broke the promise. An inducement claim targets the outsider who caused the break. They can be run together or separately, and other economic torts or equitable claims may sit alongside them.

The right mix depends on what happened. A case in which a rival simply made a better offer to a customer who was free to leave may not fit any of these. A case in which a rival used your confidential price list to target a customer bound by a minimum-term contract might fit several.

What evidence should you collect before taking action?

Preserve the contract, the communications around the breach and the financial impact before anything is deleted or overwritten. Evidence of the competitor’s knowledge and intention is the part most claims lack.

1. Secure the contract and all variations, including the termination, exclusivity and notice clauses, and confirm who signed for each side.
2. Keep every message with the supplier or customer around the time of the breach: emails, WhatsApp threads, call notes and meeting minutes. Do not edit them or delete the surrounding conversation.
3. Build a dated timeline showing when the competitor first approached the third party, when your relationship changed and when the breach occurred.
4. Note how you know the competitor knew of the contract: a shared contact, a tender requirement, an industry announcement or a message mentioning your arrangement.
5. Collect the financial evidence: sales and purchase records, quotes you lost, replacement costs and any extra expense to cover the gap.
6. Check your own conduct. If you were late in payment or in breach yourself, the third party may say it was entitled to leave, which weakens the claim.
7. Send the pack to your law firm before contacting the competitor. A badly worded message can alert the other side or create new disputes.

Ask your IT provider to preserve company email and chat accounts, particularly if staff are leaving. Our guide to writing a letter of demand explains why the wording and the signatory matter before anything goes out.

What remedies can a court grant?

The main remedies are damages for the loss caused by the inducement and, in suitable cases, an injunction to stop continuing interference. Which one fits depends on whether the harm is finished or still going on.

• Damages compensate for loss caused by the wrong, such as lost profit on the contract or the cost of replacing the supplier or customer. You must prove the loss with records, not estimates.
• An interim injunction can be sought in urgent cases to hold the position while the dispute is decided, for example to stop a competitor from continuing to procure further breaches. It is a serious step, and the court will want to hear from the other side unless the case is truly urgent. Our guides on emergency without-notice injunction applications and on discharging an injunction show how those orders can be contested.
• A final injunction can be ordered at the end of a trial if the wrong is continuing or likely to recur.

The Rules of Court 2021 deal with injunctions and other interim relief before trial in Order 13, and the Judiciary’s digest on the Supreme Court Practice Directions 2021 points to Order 13 for the forms of asset-freezing injunction and search order. The procedure for a particular application changes with amendments, so check our note on the 2026 practice direction amendments for injunctions before relying on older guidance.

How long do you have to bring a claim?

An action founded on tort generally cannot be brought after 6 years from the date the cause of action accrued. In practice, delay hurts long before that: evidence fades and a court is less ready to grant urgent relief to someone who waited.

Section 6(1)(a) of the Limitation Act 1959 sets the 6-year period for actions founded on contract or on tort. Whether and when time starts to run in a given dispute is a legal question, so ask a lawyer to confirm the date instead of counting from the day you found out. We have not set out a fixed timeline for a case through to trial, because duration varies with the court, the number of parties and how many applications are made.

What does the board resolve, and what does the solicitor file?

The board decides whether the company should pursue the claim and authorises spend and signatories. The solicitor drafts and files the court papers and conducts the proceedings.

Court proceedings, letters before action and applications for injunctions are conducted by a Singapore Advocate and Solicitor. If you are weighing up a claim, speak to a law firm early, ideally before you contact the competitor or the third party. For the corporate housekeeping, our team can prepare the board resolution and record it in the minute book. Where the competitor is a former director, our note on court injunctions to restrain a rogue director may also be relevant.

What mistakes should you avoid?

The common errors are suing too early without proof of breach, relying on suspicion alone for knowledge and intention, and writing to the competitor before the evidence is secure.

• Assuming a lost customer means a claim. If the customer was free to leave, there may be no breach to induce.
• Treating a competitor’s better offer as the tort. Winning business by fair competition is not a wrong.
• Ignoring the need to prove the third party’s breach, and failing to consider joining it where the claim requires that.
• Making allegations in public or to other customers. Statements that cannot be proved can expose your company to its own claims.
• Letting the evidence slip: staff leave, phones are replaced and chat histories vanish.
• Leaving the board out. A claim that is not authorised properly can cause disputes among directors and shareholders later.

For a wider look at how Raffles Corporate Services supports companies, visit our sister site.

Frequently asked questions

Can I sue a competitor who simply offered my customer a better price?

Not on that fact alone. The tort requires knowing inducement of a breach of contract without reasonable justification. If the customer was free to leave, or the competitor did not know of your contract, the claim is weak.

Do I have to sue my supplier or customer as well?

Not always, but the claim depends on proving that the contract party breached. In a 2025 High Court case the claim failed because the contracting company was not before the court, so ask your lawyer whether it should be joined.

Is there a time limit for suing?

Actions founded on tort generally cannot be brought after 6 years from when the cause of action accrued under section 6(1)(a) of the Limitation Act 1959. Take advice on the exact date, and act sooner if you want an injunction.

Can I get an injunction against the competitor?

The court can grant injunctions, including interim ones in urgent cases, under the Rules of Court 2021. Whether one is available depends on the facts and on how quickly you act, so this is a question for your law firm.

Who decides whether the company should sue?

The board of directors, normally by a resolution recorded in the minute book. The law firm then conducts the proceedings, and our team can prepare the resolution and records.

Last reviewed: 7 November 2026. The Editorial Team, Raffles Corporate Services.