The Percentage That Moves Millions: The Discount Rate and Serious Injury Settlements in 2026

A serious injury settlement often has to do more than compensate for what has already happened. It must fund care, equipment, adaptations, therapy and lost earnings for many years into the future. When that future loss is paid as a lump sum today, the law applies a discount rate. The rate is expressed as a percentage, but its effect can be measured in hundreds of thousands of pounds.

Why a discount rate exists

A lump sum is paid now, but it is intended to meet costs that would otherwise arise over time. The recipient can invest the money and earn a return before it is needed. The discount rate is intended to reflect the assumed real return on that investment, after accounting for inflation. If the assumed return is higher, the lump sum can be lower because the money is expected to grow. If the assumed return is lower, the lump sum must be higher to produce the same future income.

This is why a change of less than one percentage point can matter so much. Over a care package lasting twenty or thirty years, small differences compound.

How the rate is set and reviewed

The personal injury discount rate in England and Wales is set by the Lord Chancellor under the Damages Act 1996. The legislation requires periodic reviews, and the process includes consultation and expert analysis. Scotland has its own arrangements, and other parts of the UK have separate provisions, so the jurisdiction in which a claim is settled matters.

The review is not simply a technical exercise. It involves assumptions about investment returns, risk, inflation and the kind of portfolio a claimant would reasonably be expected to hold. Those assumptions are contested, and the outcome can affect thousands of claims. During 2026, the review process has continued to attract attention because any change in the rate would alter the calculation of future losses in cases that have not yet settled.

What the 2026 review means in practice

For a claimant, the practical question is not only what the rate is today but what rate will apply when the settlement is calculated. A case that settles before a change may be treated differently from one that settles afterwards. The date of settlement, the jurisdiction and the terms of any agreement can all matter.

It is important to be precise about what a review can and cannot do. It does not change the medical evidence, the claimant's needs or the care package that has been recommended. It changes the arithmetic used to convert those future needs into a present-day lump sum. Two claimants with identical injuries and identical care needs could receive different lump sums if their cases are calculated under different rate assumptions.

How one percentage point changes a care package

Consider a simplified illustration. A claimant requires care costing a substantial annual sum for the rest of their life. If the discount rate is lower, the multiplier applied to those future annual costs is higher, and the lump sum increases. If the rate is higher, the multiplier is lower, and the lump sum decreases. The effect is greatest where the care package runs for a long period and where the annual costs are high.

This is why a seven-figure award can move up or down without any change in the claimant's condition. The injury has not improved or worsened. The care needs have not disappeared. The difference lies in the financial assumptions used to value them. For families trying to plan a secure care regime, that distinction can feel uncomfortable, but understanding it is essential.

Periodical payments and the alternative to a lump sum

A lump sum is not the only way to fund future care. Periodical payments, sometimes called structured settlements or periodic payment orders, provide an income stream rather than a single capital sum. Payments can be index-linked and can be set for life or for a defined period. Because they are paid as they fall due, the discount rate does not operate in the same way.

Periodical payments can offer security and can be particularly valuable where care needs are stable and long-term. They may also raise questions about flexibility, the security of the payment stream and what happens if circumstances change. In practice, many settlements combine a lump sum for past losses and immediate needs with periodical payments for future care.

What to ask your legal team

Claimants can reasonably ask which discount rate has been assumed in any valuation or negotiation. They can ask whether the rate in force at settlement is likely to differ from the rate used in early estimates. They can ask how sensitive the settlement is to a change in the rate and whether periodical payments have been considered.

It is also appropriate to ask how the care package will be protected against future cost increases. Will the settlement include an indexation assumption? Is the care regime based on current provision or on an assessed future need? What happens if the claimant's condition changes? These questions do not require the claimant to become a financial expert. They simply ensure that the assumptions are explained in plain English.

Protecting the care package, not just the headline figure

The discount rate is not the most human part of a serious injury claim, but it is one of the most consequential. It sits between medical evidence and money, translating care needs into a capital figure. A single percentage can shape what is affordable, what is secure and what remains uncertain.

Claimants should not be expected to interpret the rate alone. The task for the legal team is to explain the assumptions clearly, test them where appropriate, and consider whether a lump sum, periodical payments or a combination best protects the care package. The rate may be a technical figure, but its consequences are practical, long-lasting and deeply personal.