What’s a Calderbank Offer? (2024 Update)

Calderbank Offer

If you’re involved in a legal dispute, you may have come across a Calderbank offer. If you have, it’s important to understand what it means. The name itself comes from the famed case Calderbank v Calderbank. Furthermore, the recent 2021 case of Barboza v Blundy & Others [2021] QSC 82 highlights the importance of the key features for a Calderbank offer. The main principle from the Calderbank Case was that the earlier refusal of a settlement offer can make the losing party liable for costs.

What is a Calderbank Offer?

A Calderbank offer informs the offeree that:

  1. The offer being made is reasonable;
  2. If the judgement made is less favourable than the offer made, the party making the offer may recover costs.

Calderbank offers aim to prevent the unreasonable rejection of reasonable settlement offers. Further, these offers can help avert unnecessary litigation. These offers also assist the Courts by providing an added incentive to settle outside of Court. Calderbank Offers are usually in writing, but can also be oral (noting that this may be harder to prove in Court).

Commonly, they often include the phrase ‘without prejudice save as to costs’ and provide a deadline for acceptance. You can also use a this type of offer before or during litigation. However, you must use it prior to the delivery of judgement.


Lucy is in a legal dispute with Jeff over a contract breach. Jeff offers Lucy $60,000 to resolve the dispute. Jeff’s lawyer sends this as a letter to Lucy’s lawyer and writes that it’s to act as a Calderbank Offer. Lucy refuses, as she is seeking $100,000 in the proceedings. The matter proceeds to trial and Lucy receives $20,000. Jeff is able to claim costs as the amount Lucy was awarded in the trial is less than what he offered her earlier.


In determining whether to give effect to a Calderbank offer, the Court will consider:

  1. Whether there was a genuine offer of compromise; and
  2. Whether rejecting the offer was reasonable.

Thus, if a Judge finds that rejection of the offer was unreasonable, this will support the other party’s claim for costs.

Is a ‘Calderbank Offer’ the same as an ‘Offer of Compromise’

A Calderbank offer is not the same as an offer of compromise. Whilst they are both devices to sanction unreasonable rejection of settlement offers, the certainty they give parties as to costs is different.

A Calderbank Offer leaves costs to the discretion of the Court. In contrast, an offer of compromise gives more predictability and more certainty in the indication of a costs order. For example, an offer of compromise can be by way of nominating a sum of money, percentage or specified scale of paying costs.


If you are considering litigation, it is important to understand the implications that a Calderbank Offer can have on your case. This also extends to whether you accept or reject any settlement offers.

Whilst a this type of offer isn’t complicated in theory. In practice, this is much different. To use or deal with one effectively, the advice of a lawyer will be necessary.

You may also like
Recent Articles

Get the latest news

By clicking on 'Sign up to our newsletter' you are agreeing to the Lawpath Terms & Conditions


Register for our free live webinar today!

Price of Justice: Paying the Right Price for Legal Expertise

12:00pm AEDT
Tuesday 30th April 2024

By clicking on 'Register for webinar' you are agreeing to the Lawpath Terms & Conditions

You may also like

This article explores everything you need to know in regards to navigating trademarks, alongside
Learn about the types of liquidators, their role when winding up a company and how they impact creditors of a business.
All you need to know about hosting your company's Privacy Policy URL. A Privacy Policy outlines how your platform handles personal data of visitors.

Thank you!

Your registration is confirmed. Keep an eye on your inbox for an email with details on how to watch the webinar.