If a Plaintiff does not accept an offer from the Defendant, under what condition can they claim costs on an indemnity basis?

The correct answer is based on the principle that a Plaintiff can claim costs on an indemnity basis if they achieve a judgment that is more favorable than the offer made by the Defendant. This encourages parties to consider reasonable offers seriously, as the legal framework is designed to discourage unnecessary litigation.

When a Plaintiff secures a result that surpasses the terms of the Defendant's offer, the court may determine that the Plaintiff acted reasonably in rejecting that offer. This is significant because it reflects the Plaintiff's ability to navigate the legal process effectively. The costs on an indemnity basis can cover not only the usual costs incurred but also any additional expenses and fees that may have arisen due to the litigation, emphasizing the Plaintiff's success in the claim.

Other scenarios, such as an unreasonable offer from the Defendant or abandoning the claim altogether, do not justify an indemnity costs order. Similarly, losing by a narrow margin does not warrant costs on an indemnity basis, as the key factor is whether the Plaintiff has achieved a more favorable outcome than the previous offer. Therefore, the relationship between the Plaintiff's success and the Defendant's offer establishes the basis for claiming costs more favorably.