How does your DB scheme revalue a deferred pension before you retire?
A defined benefit pension left behind when you change jobs does not stand still. Statutory revaluation increases it each year until retirement, normally in line with CPI subject to a cap — 5% a year for service before April 2009 and 2.5% for service after it. In a high-inflation period those caps are the whole story.
- The rule: statutory revaluation applies to deferred benefits until they come into payment.
- The measure: CPI in most schemes, RPI in some older ones, applied annually.
- The caps: 5% a year for pre-April 2009 service and 2.5% for later service.
- The consequence: inflation above the cap permanently erodes the pension in real terms.
01 What revaluation does
When you leave a defined benefit scheme, your accrued pension is frozen in the sense that no further service is added, but not in value. Statutory revaluation increases it every year until you take it, so that a pension earned at a 1998 salary is not paid at 1998 prices thirty years later.
The increase is normally CPI for the year to the previous September, applied to the whole deferred pension. Some schemes revalue by RPI, and some — particularly older ones — apply their own rules that are more generous than the statutory minimum. The scheme booklet is the authority, and the statutory rules are a floor rather than a description.
This is separate from the increases applied once the pension is in payment, which follow their own rules. A deferred member and a pensioner member of the same scheme can receive different percentage increases in the same year.
Source: Pension types and how they work
02 The two caps, and why they matter
Statutory revaluation is capped, and the cap depends on when the service was earned: 5% a year for pensionable service before 6 April 2009 and 2.5% a year for service on or after that date. A member with a long career therefore has one deferred pension revaluing at two different rates.
In a year where inflation runs at 6%, the pre-2009 slice rises 5% and the post-2009 slice rises 2.5%, and both fall behind prices. That erosion is permanent — the caps are annual, not cumulative, so a below-inflation year is never made up in a later low-inflation year.
Over a decade with a couple of high-inflation years, the real value of a deferred pension can fall materially without anything appearing to go wrong. This is the mechanism, and it is the reason inflation is the central risk in a long deferral rather than investment performance.
Shows: what a deferred pension grows to under a capped revaluation rate, against what it would take to keep pace with inflation. Ignores: the split between pre-2009 and post-2009 service, scheme rules more generous than the statutory minimum, and increases once in payment.
On the defaults above, the worked example shows £13,035 a year. Keeping pace with 3.5% inflation would need £15,078, so the cap costs £2,043 a year of real value.
Source: Consumer price inflation, UK
03 What to do about it
Almost nothing, directly — revaluation is a scheme rule and not a choice. What it changes is how you value the pension against alternatives. A deferred pension revaluing at a capped 2.5% is a weaker asset than one revaluing at uncapped CPI, and that difference belongs in any comparison against a transfer or against other savings.
It also argues for reading the annual deferred benefit statement rather than filing it. The statement shows the revalued figure, and it is the only place the caps become visible. Members who assume their pension tracks inflation and discover otherwise at 65 have usually had fifteen statements saying so.
Where a scheme revalues more generously than the statutory minimum, the opposite applies, and that generosity is a real reason to leave a pension where it is.
Source: Transferring your pension
Deferred pensions are the most ignored assets in British households, and the caps are why that is expensive. Two per cent and a half is a fine cap in a 2% world and a slow leak in a 6% one, and nothing about the statement makes that visible unless you compare it against prices yourself. Read the deferred benefit statement each year and put the revalued figure next to the previous one. If the increase is 2.5% and inflation was 5%, you have just learned something about that pension that no projection tool will tell you.
FAQ
Why do parts of my pension revalue at different rates?
Because the statutory cap depends on when the service was earned: 5% a year for pensionable service before 6 April 2009 and 2.5% for service on or after it. A long career therefore produces a single deferred pension with two revaluation rates inside it.
Does the cap catch up in low-inflation years?
No. The caps are applied annually and are not cumulative, so a year where inflation exceeded the cap is never made up later. The real-terms loss is permanent.
Is a deferred pension better left alone?
Usually, because the guarantee and the survivor's pension are hard to replace. The revaluation rate is a genuine input into that judgement though — a scheme revaluing generously is a stronger asset than one applying the statutory minimum.
Sources
Regulator references
- Pension types and how they work · GOV.UK · 2025The defined benefit and defined contribution split this post turns on.Last verified: 2026-09-07
- Consumer price inflation, UK · Office for National Statistics · 2025The CPI series that drives statutory uprating.Last verified: 2026-09-07
- Transferring your pension · GOV.UK · 2025The transfer rules, including the advice requirement on safeguarded benefits.Last verified: 2026-09-07
Calculator unit tests · the assertions this page's worked example is checked against, and their last result
Changelog
- 2026-09-07 — initial publish (new format)
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Jordan Reeves
Founder of Talk Through Wealth. A software engineer for over a decade before turning to retirement planning, Jordan built the projection engine after watching family members get fragmented, country-by-country advice that never reconciled. He writes about retirement the way the engine computes it: month-by-month, lifetime-long, and skeptical of any rule of thumb that hasn't been run through the math.