Guernsey's and Alderney's New Split Personal Injury Discount Rate and Lessons for the UK Insurance Market

Guernsey’s Policy & Resources Committee, in conjunction with Alderney’s Policy & Finance Committee, has formally announced the new statutory Personal Injury Discount Rate (PIDR). Effective from the 14 August 2026, the new framework establishes a statutory multi-tier discount rate structure segmented by specific heads of loss.

Guernsey’s new Discount Rate

Guernsey’s new statutory regime establishes three distinct rates:

1. 0.75% for damages which are subject to care cost inflation i.e. the cost of carers or nurses providing care for the injured person.

2. 0.5% for damages that are subject to earnings-related inflation i.e. the loss of earnings and damages awarded for the costs for any professionals, including registered health care professionals, excluding the above.

3. +1% for damages that are subject to price inflation i.e. all damages not included in either of the above categories.

Impact on Insurers

 For UK-based insurers underwriting risks in Guernsey or defending catastrophic claims in Guernsey, the new multi-tier regime creates complexity in a number of areas, including: Reserving – Under a single rate model, claims handlers can easily calculate reserves by applying a uniform multiplier. Under Guernsey's three-tier model, insurers must now segment reserve calculations into three distinct areas. Calculating accurate initial reserves before full medical and care expert evidence is finalised will become significantly harder. Disputes over damages categorisation – Insurers defending claims will have to be alive to the fact that claimants will seek to maximise losses allocated to the -0.75% and - 0.50% rates () while minimising those to the 1% discount rate.

There will need to be a transitional period and application of the new multi-rate model may take some time for claimants, defendants and the courts to apply the rates correctly to ensure the intended balance is achieved. It is currently unclear how long this process will take and whether there will be an increase in costly satellite litigation.

The position in England and Wales

 While the Guernsey reforms aim to balance injured claimants receiving appropriate compensation with the impact that damages awards have on insurers, the multi-tier discount rate structure is in contrast to England and Wales, where a single discount rate remains in force.

 In England and Wales, the PIDR was set at single rate of +0.5% following statutory review in 2024. During the consultation process, the Ministry of Justice and statutory expert panel considered the merits of introducing a dual or multiple rate system. However, responses from both insurers and claimant representatives did not recommend a multi-tier model in the England and Wales on the basis that:

1. Introducing split rates significantly increases the complexity of calculating damages as well as drafting schedules and counter-schedules of loss.

2. In many routine cases, it could necessitate the need for expert evidence, increasing costs.

3. Dual or multiple rates create tactical incentives for dispute and so parties may contest how lump sums are to be categorised to benefit from a lower or higher rate, which may in turn prolong cases reaching settlement and/or court proceedings generally.

4. The legal framework and settlement processes in England and Wales have historically used a single rate. Shifting to dual or multiple rates would require a lengthy transition period, complicated revisions to the Ogden tables and new systems of working for all those involved in the claims process.

The Future for England and Wales

Whilst England and Wales currently maintain a single rate of +0.5%, Guernsey’s implementation will serve as a testing ground for split rates within a UK related jurisdiction. Claims handlers and lawyers in England and Wales will be watching closely to see whether the new Guernsey system successfully delivers balanced compensation or causes more complex administration of cases and increased associated costs.

The next PIDR review in England and Wales must commence on or before December 2029. Whether the Lord Chancellor will consider a split rate at the next PIDR review will likely be influenced by the lessons learned in Guernsey over the next three years.