Undertaking as to Damages: What to Know Before Seeking an Injunction

When you’re racing to protect your business-say, to stop a former employee using your client list or to prevent a supplier from breaching exclusivity-an urgent court injunction can feel like the only practical option.

But there’s a catch many business owners don’t expect: the court will usually ask you to give an “undertaking as to damages”. In simple terms, you promise to pay the other side’s loss if it later turns out the injunction shouldn’t have been granted.

This promise can carry serious financial risk. The good news is that with the right preparation-both legal and commercial-you can manage that risk and put your best foot forward in court.

In this guide, we explain what an undertaking as to damages is, when it applies, how to prepare one, and steps you can take to reduce your exposure before you’re anywhere near a courtroom.

What Is An Undertaking As To Damages?

An undertaking as to damages (sometimes called a “cross‑undertaking”) is a promise you give to the court when you ask for an urgent, temporary order-usually an interlocutory injunction-to restrain someone else until the dispute is fully decided.

Because injunctions are often granted quickly and on limited evidence, courts balance things out by requiring the applicant (that’s you) to undertake to compensate the respondent for any loss suffered because of the injunction, if the court later decides the injunction should not have been granted.

Think of it as a safety net for the other side: if the injunction freezes their business wrongfully, the undertaking is how they’re made whole. For you, it’s a meaningful liability-you may be paying damages even if you acted in good faith.

This isn’t a standard commercial contract. It’s a promise to the court. If you breach it, you risk further orders being made against you. Where appropriate, courts can also require security to back the undertaking (for example, a bank guarantee or payment into court).

When Will A Court Require It?

Generally, whenever you seek an interlocutory injunction, expect to give an undertaking as to damages.

Common small business scenarios include:

• Enforcing restraints of trade (for example, stopping a former employee soliciting clients while the case is heard).
• Protecting confidential information (seeking to prevent use or disclosure of your trade secrets).
• Urgent supply or distribution disputes (e.g. stopping a supplier from cutting you off in breach of an agreement).
• Brand protection matters (urgent steps to restrain passing off or misuse of your brand).

Courts weigh several factors-like whether there’s a serious question to be tried and the balance of convenience-but the undertaking is a near‑universal condition of any interim restraint. If you can’t credibly stand behind it, the injunction may be refused.

How Do You Prepare An Undertaking (And Estimate Potential Exposure)?

Preparation is about two things: wording the undertaking clearly, and demonstrating you can meet it if required. You also need to think through what the other side’s loss might look like if the injunction turns out to be wrongly granted.

Common Heads Of Loss You Might Be Liable For

Depending on the facts, the respondent may claim that, because of the injunction, they suffered losses such as:

• Lost sales, contracts or profits during the restraint period.
• Disruption costs, such as idle labour or warehousing/storage fees.
• Additional costs to re‑route supply chains or fulfil obligations another way.
• Wasted expenditure linked to paused projects or campaigns.
• Interest or financing costs caused by cash flow disruption.

These aren’t theoretical. If you ultimately lose or the injunction is discharged, the court can refer the undertaking to assessment and award damages on these heads, if proven. This is separate from any underlying breach of contract claim between the parties.

Drafting: Clear, Standard Wording Helps

Courts are familiar with standard forms of undertaking. Your lawyers will usually propose concise wording along these lines: you undertake to the court to pay to the respondent such damages (if any) as the court orders, to compensate the respondent for any loss sustained by reason of the granting of the injunction.

Occasionally you’ll see tailored carve‑outs or conditions, but most undertakings are short and broad. If the court has concerns about your ability to meet the undertaking, it may ask for security.

Evidence And Financial Capacity

Be ready to show the court you can answer the undertaking. Depending on the risk profile, this might include:

• Company financial statements, bank statements or a CFO affidavit on available cash and credit.
• Evidence of insurance that may respond (if applicable).
• Third‑party support (for example, a parent company letter of comfort), noting the court may prefer formal security.

In higher‑risk cases, expect the court to press for concrete security rather than comfort letters.

Security: Cash, Bank Guarantees Or Third‑Party Support

Security isn’t automatic, but it’s common. The two usual forms are cash lodged with the court or a bank guarantee for a specified amount. If you’ve never dealt with them, it’s worth understanding how bank guarantees work in Australia and how quickly your bank can issue one.

Sometimes respondents argue for a personal backstop if the applicant is thinly capitalised. Be careful here. If you’re a director, consider the risks of giving a personal guarantee to support the undertaking (or at all). There may be better ways to structure security that do not expose your personal assets.

On the flip side, if you’re defending an injunction application and you’re concerned about your potential loss, you should seek conditions that ensure the undertaking is meaningful-appropriate security, periodic review of loss, or staged increases in the guarantee if the injunction is extended.

Practical Steps If You’re Defending An Injunction With An Undertaking On The Table

If you’re on the receiving end of an injunction application, the undertaking can be a powerful tool to protect your position while the matter runs its course.

• Require adequate security: Ask the court to require cash or a bank guarantee that realistically covers potential loss during the injunction period.
• Identify likely loss early: Prepare evidence of your likely losses if restrained-lost sales forecasts, key contracts at risk, staffing or stock impacts. This informs the security amount and supports later assessment if needed.
• Push for time limits and review: Seek orders that limit the injunction’s duration initially, with a timetable for evidence and review. Longer restraints usually mean higher loss risk.
• Narrow the restraint: If an injunction will be made, try to narrow it to the least disruptive terms that still address the alleged harm.
• Keep good records: If an undertaking might be called on, contemporaneous records of impact (orders lost, supply issues, staffing costs) are crucial.

In some cases, you may offer your own undertakings (for example, not to use certain files pending trial) as a pragmatic way to avoid a broader injunction and reduce the other side’s need to rely on their undertaking as to damages.

Risk Management: How To Reduce The Chance You’ll Need An Injunction

Many urgent injunctions arise because contractual or policy settings weren’t strong enough to prevent harm in the first place. A little preventive work goes a long way.

• Use robust restraints and confidentiality terms in employment contracts: If enforceable, these reduce the chance you’ll need court orders at all. Well‑drafted restraints also put you in a stronger position if you must seek an injunction. Consider whether your business needs a tailored Non‑Compete Agreement (alongside other restraint and confidentiality provisions) for key staff.
• Protect trade secrets with clear NDAs: When sharing sensitive information with contractors, distributors or potential partners, a strong Non‑Disclosure Agreement sets expectations and gives you contractual leverage if information is misused.
• Tighten core commercial contracts: Clear IP ownership, exclusivity, termination rights, and dispute resolution clauses can prevent escalation. Limitation and exclusion clauses also help manage downside risk if a dispute flips and you’re restrained-see how limitation of liability clauses work in Australian contracts.
• Plan for security and enforcement: If your commercial model depends on urgent relief being available, think ahead about how you’ll give security. In supplier or distribution networks, consider registering important rights on the PPSR so you can register a security interest where appropriate.
• Resolve early where possible: A pragmatic commercial settlement-documented in a clear Deed of Release-can often achieve similar protection without the cost and risk of an undertaking hanging over you.

The aim is not only to make your case stronger if you do need to go to court, but also to reduce the number of situations where urgent injunctions are your only option.

Key Documents And Clauses To Support Your Position

While an undertaking as to damages is a court‑driven concept, the contracts and policies you use every day can make or break your prospects in an injunction application-and can limit your financial exposure if things go sideways.

• Employment Contracts With Restraints: Clear non‑compete, non‑solicit and confidentiality restraints-reasonable in scope and duration-make it easier to justify urgent relief and narrower orders.
• Non‑Disclosure Agreement (NDA): A dedicated NDA supports your claim that information is confidential and misuse causes irreparable harm, which is a common basis for injunctions.
• Core Customer or Supplier Terms: Ensure your contracts include IP ownership, exclusivity where justified, and well‑drafted termination and step‑in rights. Consider proportionate liability and limitation of liability clauses to manage downside risk if an undertaking later bites.
• Bank Guarantee Arrangements: If your business may need to put up security quickly, set up a facility with your bank in advance. Understanding bank guarantees will help you move fast when it matters.
• Personal Exposure Planning: Avoid ad‑hoc personal promises under pressure. Know the risks of personal guarantees and explore alternatives with your lawyer if security is needed.
• Settlement Frameworks: If you can solve the dispute quickly, a well‑structured Deed of Release can lock in undertakings by the other side (e.g. to cease certain conduct) and avoid court altogether.
• Policy Housekeeping: Ensure your confidentiality, data access and offboarding policies match your contracts. Gaps here often drive the urgency behind injunctions.

If you’re unsure how to reflect these protections in your current contracts, it’s worth reviewing your suite with a business lawyer before issues arise.

Frequently Asked Questions About Undertakings As To Damages

How big should the security be?

There’s no fixed formula. The court looks at evidence of likely loss during the injunction period and sets an amount that reasonably protects the respondent. It can be revisited if circumstances change (for example, if the injunction is extended).

Can I limit my undertaking?

Undertakings are typically broad. You can ask for tailored wording or caps, but courts are cautious about limiting compensation for wrongful restraint. If you’re seeking a narrow injunction and can show limited downside risk, the court may accept narrower security rather than narrowing the undertaking itself.

What if the respondent alleges huge losses that seem inflated?

Challenge them with evidence. Courts won’t set security at speculative levels. If you can show the market impact is limited or there are ready alternatives for the respondent, the security amount will reflect that reality. If the injunction later proves wrongful, the respondent still needs to prove loss properly when calling on the undertaking.

Is an undertaking the same as a waiver?

No. A waiver is where someone agrees not to enforce certain rights. An undertaking as to damages is your promise to compensate if the injunction was wrongly granted. If waivers appear in your contracts, make sure they’re drafted and used lawfully-see this overview of legal waivers in Australia.

Do I need a formal deed for an undertaking?

The undertaking is given to the court, not signed as a commercial contract (though it’s often recorded in court orders). Separately, parties may also use deeds in settlements connected to the dispute. If so, understand what a deed is and when it’s appropriate.

Step-By-Step If You’re Considering An Injunction

1. Pressure‑test your case: Identify the legal basis (contract, confidentiality, IP, statutory claims), gather immediate evidence, and assess urgency.
2. Define the narrowest practical orders: The tighter and more targeted your proposed orders, the better your prospects and the lower the security risk.
3. Model undertaking exposure: Estimate the respondent’s likely loss if restrained; be realistic. Prepare financial evidence of your capacity to answer the undertaking.
4. Line up security: Speak with your bank early about guarantee lead times. Consider cash security if speed is critical.
5. Consider alternatives: Explore negotiated undertakings by the other side, short‑form standstill agreements, or expedited final hearings to reduce overall risk.
6. Plan for next steps: If the injunction is granted, lock in a tight timetable for evidence and a prompt hearing to minimise how long your undertaking is exposed.

Key Takeaways

• An undertaking as to damages is almost always required when you seek an interlocutory injunction in Australia-and it carries real financial risk.
• Be ready to show the court you can meet the undertaking, including by providing security such as a bank guarantee or cash if asked.
• Your exposure ties to the respondent’s likely loss if restrained; model it realistically and tailor your orders to minimise impact.
• Strong contracts-restraints, NDAs and clear commercial terms-reduce the need for urgent injunctions and strengthen your position if you do apply.
• If you’re defending an injunction, push for adequate security, narrow terms, and prompt review to protect your business.
• Early legal advice can help you weigh injunction benefits against undertaking risks and, where possible, resolve disputes commercially.

If you’d like a consultation about undertakings as to damages and injunctions for your business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.