Key Facts
- A retrospective CHC (PUPoC) reclaim is made of two parts: the care fees you paid during the unassessed period, plus interest — and the fees are almost always the larger number
- Since 1 April 2015, the NHS calculates that interest as compound RPI, applied year by year (NHS England Refreshed Redress Guidance, 2015) — not the 8% many families expect
- At 2025 self-funder rates of £1,298/week for residential care (Carehome.co.uk, September 2025), a three-year period passes £200,000 in fees before interest
- The interest is a modest topper — often under 10% of the principal across a typical claim, because RPI in normal years sits in low single digits
- You do not need a no-win-no-fee firm to have interest added — the ICB calculates it as standard on a successful claim
"Is it even worth claiming?" It's the first question almost every family asks about a retrospective CHC claim, and it deserves an honest answer rather than a slogan. The honest answer is a calculation. A reclaim is your care fees for the period the NHS never assessed, plus interest — and once you see how each part is worked out, you can size the sum before you commit to the effort.
TL;DR: A retrospective CHC (PUPoC) reclaim equals the care fees you self-funded during the unassessed period, plus interest. The principal dominates: residential care averages £1,298/week in 2025 (Carehome.co.uk), so three years tops £200,000. Interest surprises people — since 2015 the NHS uses compound RPI (NHS England), not 8%.
This post covers the money — how to add up the fees, and exactly how the NHS works out interest. It does not cover who can claim, the April 2012 start date, or how estate claims work after a death. Our guide to retrospective CHC claims handles eligibility and the process; this one handles the sum.
What a Retrospective CHC Reclaim Is Actually Made Of
A PUPoC reclaim has exactly two components: the care fees paid during the unassessed period (the principal) and the interest the NHS adds to reflect the years the family was out of pocket. The principal is almost always far larger. Get the fees right first, and the interest is a secondary layer on top.
The legal purpose shapes everything. NHS England's redress guidance says the aim is to restore the person to the position they'd have held but for the error. It also states that "remedies should not lead to a complainant making a profit" (NHS England, 2015). That single principle explains why interest exists at all, and why it's pegged to inflation rather than a punitive rate.
Citation capsule: A retrospective NHS Continuing Healthcare reclaim consists of the care fees self-funded during an unassessed period plus interest. NHS England's 2015 redress guidance frames the payment as restitution — restoring the person to the position they would have held but for the error — not a penalty, which is why interest tracks inflation.
So the work splits cleanly into two steps. Step one: total the fees. Step two: apply the interest method. Take them in order.
Step 1 — Add Up the Care Fees (the Principal)
Start with what was actually paid each week, across every week of the unassessed period. At 2025 self-funder rates that's roughly £1,298 a week for residential care and £1,535 a week for nursing care (Carehome.co.uk, September 2025) — though regional rates run from under £900 to over £1,500 a week, as our care home costs by region guide sets out. Multiply the weekly rate by the number of weeks, then subtract anything the NHS already paid — such as the Funded Nursing Care contribution.
Use the rate that was actually invoiced in each year, not today's figure. Self-funder fees rose around 10% in the year to December 2025 (Carehome.co.uk), so historic years were lower. The care home invoices are your source of truth here — gather them before anything else, because they pin down both the weekly rate and the exact dates.
What a funded year is worth varies enormously by area, and that matters because your reclaim mirrors local fee levels. Across ICBs, average spend per standard CHC recipient ranges from £32,558 to £133,201 — a four-fold gap, driven largely by regional care costs (Nuffield Trust, September 2025).
Citation capsule: UK self-funder care home fees averaged £1,298 a week for residential care and £1,535 for nursing care in September 2025 (Carehome.co.uk). A single self-funded year of residential care therefore exceeds £67,000, so the principal in a multi-year PUPoC reclaim routinely reaches five or six figures before interest.
Step 2 — How the NHS Calculates Interest (the Part Everyone Gets Wrong)
Here's the part that catches families out. Since 1 April 2015, the NHS calculates redress interest as compound interest using the Retail Price Index (RPI), applying each year's average RPI rate to the fees from that year (NHS England Refreshed Redress Guidance, 2015). The guidance puts it plainly:
"CCGs are advised to apply the Retail Price Index for calculation of compound interest when considering redress cases... CCGs are advised to apply the average rate for the year for which care costs are being reimbursed."
One translation note: that guidance pre-dates the 2022 NHS reorganisation, so it says "CCG". Clinical Commissioning Groups were abolished on 1 July 2022 and replaced by Integrated Care Boards. Read "CCG" as "ICB" — the method is unchanged.
Now the misconception. Many families — and plenty of no-win-no-fee adverts — talk about 8% interest. That figure is the statutory court interest rate, and it was commonly applied to older cases settled before April 2015. It is not the current NHS method, and it is not an NHS-published rate. Since 2015, RPI has governed, and across a typical claim RPI works out materially lower than 8%. In calm years it sits in low single digits; it spiked to 11.6% in 2022 before falling back (ONS, 2023).
Citation capsule: Since 1 April 2015, NHS England guidance directs commissioners to add compound interest to retrospective CHC refunds using the Retail Price Index, applying each year's average rate to that year's fees (NHS England). The widely cited 8% is the older statutory court rate, not the current NHS method.
The practical takeaway? The principal is where the money is. Interest is a real but modest addition, so don't let the prospect of "interest on a decade of fees" do the deciding — the fees themselves carry the claim.
A Worked Example — Three Years of Residential Care
Put the two steps together. Take three years of self-funded residential care at the 2025 average of £1,298 a week. That's £67,496 a year, or £202,488 in fees before interest. The interest then compounds on each year's fees from the date they were paid up to the redress offer.
The table below shows the shape of it. Worked the long way, each year's fees grow at compound RPI from the date they were paid: at an illustrative 5%, year one's £67,496 compounds over three years (≈ £10,600), year two's over two (≈ £6,900), year three's over one (≈ £3,400) — roughly £20,900 in total. The RPI rates here are illustrative — your ICB applies the actual ONS RPI figure for each specific year, which is why you should pull the exact rates for your own dates rather than rely on a single average.
| Component | Amount |
|---|---|
| Year 1 fees (£1,298 × 52) | £67,496 |
| Year 2 fees | £67,496 |
| Year 3 fees | £67,496 |
| Principal (fees) | £202,488 |
| Compound interest (illustrative ~5%/yr) | ≈ £20,900 |
| Indicative total reclaim | ≈ £223,400 |
A caveat worth stating plainly: this is illustrative, not a promise. Real RPI figures must be read from ONS for the exact years, and the real fees come straight from the invoices. We're showing the method so you can run your own numbers — not guaranteeing an outcome.
Why Your Real PUPoC Reclaim Will Differ
Three variables move the total more than any other: the length of the unassessed period, the weekly rate actually paid, and the specific years involved (because RPI differs each year). Change any one and the sum shifts. A nursing placement at £1,535 a week runs roughly 18% above the residential figure used above; a five-year period more than doubles a two-year one.
A few other factors nudge the figure. Funded Nursing Care already paid is deducted. Part-periods are pro-rated. And whether the person is still living or the claim is brought by their estate changes who receives the money, though not how it's calculated — our retrospective claims guide covers the estate mechanics.
For a sense of scale, Nuffield Trust puts average spend per standard CHC recipient at £65,185 in 2022/23, up 45% in real terms from £44,894 in 2017/18 (Nuffield Trust, September 2025). That's close to a single self-funded year — a useful yardstick when you're estimating what one year of a reclaim is worth.
The Catch — Interest Doesn't Offset the Wait
Modest interest is small comfort when retrospective reviews crawl. The Parliamentary and Health Service Ombudsman has found these cases "date back many years, in some cases more than a decade," leaving families "with significant uncertainty... for far too long" (PHSO, 2020). RPI interest does accrue across that delay, but at low single-digit rates it never compensates for years of waiting.
Best-practice targets exist — broadly six months for a period of care under a year, and a twelve-month longstop for longer ones (Mills & Reeve, January 2024) — but ICBs frequently exceed them. The lesson is straightforward: a fast, well-evidenced claim beats a drawn-out one. Strong historic records shorten the review and reduce the chance of a refusal you then have to appeal. That's the real lever, not the interest rate.
Citation capsule: The Parliamentary and Health Service Ombudsman has criticised retrospective CHC reviews for stretching back "in some cases more than a decade," leaving families in prolonged uncertainty (PHSO, 2020). Compound RPI interest accrues over the delay but, at low single-digit rates, does not offset years of waiting.
Case Strength Report
Before you commit to a full retrospective claim, our Case Strength Report reviews the historic care records against all 12 CHC domains and tells you whether the period is strong enough to be worth pursuing — so you scope the money and the merit together.
The Bottom Line
A retrospective reclaim is two numbers stacked: the fees, and the interest. Knowing how each works turns "is it worth it?" from a guess into a calculation you can actually run.
- The principal is the prize — at 2025 rates, each self-funded year of residential care tops £67,000, so multi-year periods reach six figures fast.
- Interest is compound RPI, not 8% — the 8% figure is the old statutory court rate, replaced by the RPI method for decisions from 1 April 2015.
- Interest is a modest topper, usually well under the principal, because RPI sits in low single digits in normal years.
- Your real figure turns on period length, weekly rate, and the specific years — pull the exact ONS RPI for your dates.
- Speed and evidence matter more than the interest rate — a well-documented claim settles faster and is less likely to be refused.
The first practical move is to scope the period and the sum. Our retrospective claim calculator helps you size it in a few minutes, and a Case Strength Report tells you whether a period is strong enough to be worth the work — before you commit to a full claim.
CareAdvocate provides evidence-preparation and advocacy support for NHS Continuing Healthcare. We are not solicitors, and this guide is general information, not legal or financial advice. Figures are illustrative and drawn from NHS England, the Nuffield Trust, Carehome.co.uk and the ONS as cited. Reviewed by legal professionals and social care professionals.
Frequently asked questions
Does the NHS pay interest on a care fee refund?
Yes. Since 1 April 2015, NHS England guidance directs ICBs to add compound interest to a successful retrospective CHC refund, calculated using the Retail Price Index. Interest runs from when the fees were paid up to the date of the redress offer, on top of the care fees themselves.
Is CHC refund interest 8%?
Not since April 2015. The 8% figure is the statutory court interest rate that was commonly applied to older cases. The current NHS method uses compound RPI, applying each year's average rate — typically low single digits, and usually lower than 8% across a multi-year claim.
How much can a PUPoC reclaim be worth?
Most of the value is the principal — the care fees themselves. At 2025 self-funder rates of around £1,298 a week for residential care, a single year exceeds £67,000, so a multi-year unassessed period commonly reaches five or six figures before any interest is added.
How far back can the reclaim period go?
Generally to 1 April 2012, under GOV.UK guidance on previously unassessed periods of care. Earlier periods were closed by fixed deadlines in 2012 and 2013. The start date is fixed — there is no rolling six-year window that keeps moving forward.
Do I need a no-win-no-fee firm to get the interest?
No. The ICB calculates interest as standard on any successful claim — you do not need to pay a percentage to unlock it. A no-win-no-fee success fee simply reduces your net recovery, often by a substantial sum on a six-figure refund.