Indemnity Costs: Why Hindsight Remains an Inappropriate Test - and How Courts Apply the Principle at Assessment

Context: The Rule Against Hindsight in Indemnity Costs

In costs law, it is established that indemnity costs should generally be awarded only where conduct was unreasonable at the time it occurred, not with the benefit of hindsight.

This reflects a fundamental fairness principle:

• a party should not be penalised for strategic decisions that only later appear unwise

• behavior must be judged based on information reasonably available at the time it was made

This case reaffirmed that approach and continues to influence how indemnity costs are applied in practice.

What the Decision Confirms

The key principle from this decision is:

Rather, indemnity must be justified by conduct that is unreasonable when measured at the relevant point in time.

This denies the temptation to say, after an outcome is unfavourable:

Instead, courts look at the information and context available at the moment the disputed conduct occurred.

This protects strategic freedom of litigation while still enabling costs consequences for genuinely unreasonable conduct.

Why This Matters in Costs Disputes

Understanding this principle is not academic, it has real implications for:

• arguing indemnity costs claims

• defending against indemnity costs applications

• resisting indemnity at detailed assessment

• framing conduct evidence strategically

Indemnity costs awards can shift recoverable totals dramatically, especially when combined with other challenges.

A party’s conduct throughout the case becomes the battleground; how it is framed in submissions can determine whether indemnity is justified.

Practical Application at Detailed Assessment

The “Conduct at the Time” Test

Courts look at:

• what information was reasonably known when decisions were taken

• why particular strategic choices were made

• whether there was a real basis for the conduct at that time

• if any deviation from standard practice was truly justified

This test avoids penalising reasonable strategy that only later proved unsuccessful.

For paying parties and respondents alike, the focus is:

How Paying Parties Use This in Indemnity Challenges

Practical methods for resisting indemnity costs include:

• demonstrating that decisions were objectively reasonable at the relevant time

• showing that opposing arguments rest on hindsight assumptions

• relating conduct to contemporaneous correspondence and case events

• drawing out the difference between hindsight logic and real-time decision-making

The stronger your evidence on real-time justification, the harder it is for indemnity to be justified on hindsight review.

When Indemnity Costs Are Still Justified

Although hindsight should not be used, indemnity costs are appropriately awarded when conduct at the time was:

• plainly unreasonable

• abusive or obstructive

• in breach of a clear rule or court order

• manifestly without real basis

Indemnity remains a tool to penalise truly inappropriate conduct, but not merely to reward post-hoc criticism of decisions that were reasonable at the time.

Common Mistakes That Lead to Indemnity Awards

Parties (and sometimes less experienced practitioners) fall into traps such as:

• arguing that “it was obvious this would fail” long before the hearing

• attacking strategic choices with hindsight language

• assuming a different outcome should mean indemnity

• failing to locate conduct in a real-time context

These mistakes make indemnity awards more likely.

Bringing This Into Costs Strategy

Understanding the hindsight rule helps in:

• Resisting indemnity at assessment

• Framing conduct submissions effectively

• Preparing opposing party evidence

• Modelling total recoverable costs (including costs of indemnity applications)

This links back into broader themes such as:

• assessment strategy

• recoverability planning

• paying party dispute tactics

Key Takeaways

• The “no hindsight” rule is foundational to indemnity costs

• Conduct is judged in real time, not with benefit of outcome

• Indemnity can still be justified for truly unreasonable conduct

• Challengers succeed by rooting arguments in contemporaneous evidence

• This principle matters not just in theory, but in assessment strategy