UK pounds inflation guide: 2026/27
UK Pounds Inflation Calculator 2026/27: GBP Purchasing Power Across History
Complete guide to UK pound (GBP) inflation history and purchasing-power calculations. ONS Consumer Prices Index (CPI series D7BT) data from 1990 to 2026, what £100 from any historical year is worth today, long-run UK inflation trends (2-3% per year average), the 2022-2023 inflation spike to 11.1%, CPI vs CPIH vs RPI methodology comparison, Bank of England 2% target framework, triple-lock State Pension uprating mechanics, and fiscal-drag impact on frozen UK tax thresholds.
£100 from historical years - today's equivalent value
Using ONS CPI D7BT annual averages, indexed to 2015 = 100:
| Year | CPI | £100 from that year in 2026 pounds | Cumulative price growth |
|---|---|---|---|
| 1990 | 50.7 | £288.76 | +189% |
| 1995 | 58.5 | £250.26 | +150% |
| 2000 | 64.8 | £225.93 | +126% |
| 2005 | 72.6 | £201.65 | +102% |
| 2010 | 84.4 | £173.46 | +73% |
| 2015 | 100 | £146.40 | +46% |
| 2020 | 108.9 | £134.44 | +34% |
| 2023 | 135.1 | £108.36 | +8% |
For year-by-year interactive calculations across any pair of UK years, see our inflation calculator. The historic series back to 1990 shows the compounding effect of typical 2-3% annual inflation - £100 from 1990 has lost approximately 60-65% of purchasing power by 2026.
UK CPI annual averages (ONS D7BT)
Full ONS Consumer Prices Index annual averages from 1990 to 2026. Series indexed to 2015 = 100. Updated when ONS publishes the annual figure each January.
| Year | CPI annual average | YoY change |
|---|---|---|
| 1990 | 50.7 | n/a |
| 1995 | 58.5 | +15.38% |
| 2000 | 64.8 | +10.77% |
| 2005 | 72.6 | +12.04% |
| 2010 | 84.4 | +16.25% |
| 2015 | 100 | +18.48% |
| 2016 | 100.7 | +0.70% |
| 2017 | 103.6 | +2.88% |
| 2018 | 106 | +2.32% |
| 2019 | 107.8 | +1.70% |
| 2020 | 108.9 | +1.02% |
| 2021 | 111.6 | +2.48% |
| 2022 | 122 | +9.32% |
| 2023 | 135.1 | +10.74% |
| 2024 | 138.4 | +2.44% |
| 2025 | 143.1 | +3.40% |
| 2026 | 146.4 | +2.31% |
CPI vs CPIH vs RPI - which to use
| Index | Series | Includes housing? | Used for |
|---|---|---|---|
| CPI | D7BT | No (rents only, not owner-occupied) | Bank of England 2% target, State Pension triple lock (September CPI) |
| CPIH | L55O | Yes (rental equivalence) | ONS preferred general measure |
| RPI | CHAW | Yes (mortgage interest) | Legacy index-linked gilts, some pension schemes, student loans Plan 2. Decommissioned for National Statistics 2013. Aligns with CPIH from 2030. |
RPI typically runs 0.5-1.0 percentage points higher than CPI due to the Carli formula. CPIH typically runs 0.0-0.5 percentage points different from CPI. For most general-purpose UK inflation calculations, CPI D7BT is the standard reference. Our inflation calculator uses CPI D7BT as the underlying data source.
Fiscal drag - the silent tax rise
"Fiscal drag" is the gradual increase in real-term tax burden caused by freezing tax thresholds in nominal terms while inflation continues. The UK's main personal-tax thresholds are frozen at 2022 levels until at least April 2030 (confirmed Autumn Budget 2024):
- Personal Allowance £12,570
- Higher-rate threshold £50,270
- Additional-rate threshold £125,140
- IHT Nil Rate Band £325,000
- Residence Nil Rate Band £175,000
- National Insurance Primary Threshold £12,570 and Upper Earnings Limit £50,270
- Annual Investment Allowance £1m
- ISA allowance £20,000
- Pension Annual Allowance £60,000
Each year of CPI inflation pushes more workers into higher tax bands and reduces the real-terms value of every allowance. Resolution Foundation estimates the cumulative fiscal drag effect through 2030 to be approximately £100bn of additional tax revenue vs an indexed-threshold counter-factual. The political durability of the freeze is high because it raises substantial revenue without explicitly "raising taxes" — the standard "stealth tax" criticism.
The Capital Gains Tax Annual Exempt Amount was ACTIVELY cut from £12,300 (2022/23) to £6,000 (2023/24) to £3,000 (2024/25 onwards) — a real-terms reduction over and above fiscal drag. This is the most aggressive single threshold movement in the UK personal tax code in recent decades.
Frequently asked questions
How is UK inflation measured?
Three official UK inflation indices. CPI (Consumer Prices Index) is the headline measure used by the Bank of England for the 2% inflation target and by the government for State Pension uprating (CPI September figure used). Series code D7BT, indexed to 2015 = 100. CPI excludes owner-occupied housing costs. CPIH adds owner-occupied housing costs (rental equivalent) and is the ONS preferred measure for cross-period comparison. RPI (Retail Prices Index) is the older measure historically used for many indexation purposes (older index-linked gilts, some pension schemes, rail fares) but has been substantially decommissioned for official statistics due to known methodological flaws (Carli formula bias). RPI continues to be used for some legacy contracts. CPI is the most widely-quoted figure in tax-policy contexts; this calculator uses ONS D7BT CPI as the underlying data source.
What has UK inflation averaged over the long run?
Long-run UK CPI inflation has averaged approximately 2.5-3% per year since World War 2, with substantial variation across periods. The 1970s saw double-digit inflation peaking at 24.2% in 1975 due to oil crises and wage-price spirals. The 1980s saw inflation moderate to 5-8%. The 1990s-2000s averaged 2-3% as the Bank of England Monetary Policy Committee (MPC) targeted 2% from 1997 onwards. The 2010s saw an extended low-inflation period averaging 1.5-2.5%. The 2022-2023 period saw the largest inflation spike in 40 years, peaking at 11.1% in October 2022 driven by post-COVID supply chain disruption and the Russia-Ukraine energy shock. CPI returned toward the 2% target by mid-2024 and has remained in the 2-3% range since. The most recent ONS annual average is 2026: 146.4 (2015 base = 100).
What is £100 from 1990 worth today?
Using ONS CPI D7BT, £100 from 1990 has roughly the same purchasing power as £288.76 in 2026 - meaning prices have risen approximately 189% across the 34-year period. This compounds to an annualised inflation rate of approximately 2.7% per year. For comparison: £100 from 2000 = ~£225.93 today (price growth 126%); £100 from 2010 = ~£173.46 (growth 73%); £100 from 2020 = ~£134.44 (growth 34%). The 2020-2026 period accelerated relative to long-term average due to the 2022-2023 inflation spike. For interactive year-by-year calculations see our inflation calculator tool.
How does inflation affect my UK salary in real terms?
Real-term salary purchasing power is your nominal salary divided by the CPI index level, normalised to a reference year. If your salary was £30,000 in 2015 (CPI base year = 100) and you earn £40,000 in 2026 (CPI = 146.4), your real-term equivalent in 2015 prices is £40,000 × (100 / 146.4) = £27322. So your £40,000 in 2026 buys roughly what £27322 bought in 2015 — slightly more or less than the £30,000 baseline depending on the comparison. Real-term salary growth has been weak across the UK since 2008: many sectors (public sector, manufacturing, retail) show ZERO or NEGATIVE real-term growth over the 15-year period. Higher-earning professional sectors (technology, finance, healthcare consultants) have generally outpaced inflation. The salary vs inflation programmatic pages show real-term growth comparisons for specific salary amounts across UK history.
What is "fiscal drag" and how is it linked to inflation?
Fiscal drag is the gradual increase in real-term tax burden caused by freezing tax thresholds in NOMINAL terms while inflation continues. The UK's main personal-tax thresholds are frozen at 2022 levels until April 2028 (Personal Allowance £12,570, higher-rate threshold £50,270, additional-rate threshold £125,140, IHT Nil Rate Band £325,000, etc.) - meaning each year of inflation pushes more workers into higher tax bands without any policy change. Worked example: a worker on £40,000 in 2022 paying basic-rate 20% on income above £12,570 received a £4,000 cost-of-living pay rise to £44,000 in 2024. The £4,000 increase is taxed at 20% (£800 of extra tax). But the £12,570 PA hasn't moved - so the worker's REAL purchasing power increased by less than the nominal £3,200 net pay-rise. By 2028 the cumulative fiscal-drag effect on a typical household earning £40-£60k will be ~£600-£1,400 of extra annual tax vs an indexed-threshold counter-factual, per Resolution Foundation projections.
What is the Bank of England 2% inflation target?
The Bank of England's Monetary Policy Committee (MPC) was given a 2% CPI inflation target by the Bank of England Act 1998. The target is symmetric — the MPC aims to keep inflation close to 2% in either direction. If inflation deviates by more than 1 percentage point either way (so under 1% or over 3%), the Governor must write an explanatory letter to the Chancellor. The MPC adjusts the Bank Rate (base interest rate) and Quantitative Easing/Tightening to meet the target. Recent context: Bank Rate was raised from 0.1% in December 2021 to 5.25% by August 2023 in response to the 11% inflation peak, then cut to 5% in August 2024, 4.75% in November 2024, 4.5% in February 2025, and continued cutting through 2025 as inflation returned to the 2-3% range. The 2% target has been UK monetary policy since 2003 (previously 2.5% RPIX). The target structure has remained stable through multiple political changes.
How does inflation affect the State Pension?
The State Pension is uprated annually by the "triple lock" - the highest of CPI inflation (September figure), average earnings growth (3 months ending in May), or 2.5%. The full new State Pension rose from £203.85/week in 2024/25 to £230.25 in 2025/26 (8.5% earnings growth, the highest of the three) and to £241.30 in 2026/27 (4.8% earnings growth). The triple lock has been a major policy debate because earnings-growth-driven uplift in 2024/25 reflected post-COVID wage catch-up rather than ongoing structural growth. Pre-existing pensioner index-linked annuities (purchased before 2014) use RPI not CPI, giving slightly higher uprating than the triple lock during high-inflation periods. Public-sector pensions (NHS, Teachers, Civil Service) uprate by CPI. Private-sector defined-benefit pensions use CPI or RPI depending on scheme rules and the 1997-1999 Statutory Increase rules.
What is the difference between CPI and CPIH?
CPI and CPIH measure the same basket of goods and services with different treatment of owner-occupied housing costs. CPI EXCLUDES owner-occupied housing — covers rents but not the imputed cost of owning a home. Series code D7BT. Used by the Bank of England for the 2% inflation target. CPIH INCLUDES owner-occupied housing costs via "rental equivalence" methodology (estimating what a homeowner would pay if renting their own home). Series code L55O. Used by ONS as the preferred measure for general economic analysis. CPIH typically runs 0.0-0.5 percentage points different from CPI, with the difference largest during housing-market booms. CPI is the dominant headline number in UK media and policy discussion; CPIH is more accurate as a "household cost of living" measure. The European Central Bank and OECD use measures closer to CPIH; the UK retains CPI as the headline measure for monetary-policy consistency.
What about RPI? Is it still used?
RPI (Retail Prices Index) is the OLDEST UK inflation measure, originating in 1947. It uses the Carli aggregation formula which produces an upward bias of approximately 0.5-1.0 percentage points vs CPI. The UK Statistics Authority withdrew RPI's "National Statistic" designation in 2013 due to the formula flaw. RPI continues to be used for: (1) older index-linked gilts (RPI-linked bonds issued before 2030 will continue to be indexed by RPI), (2) some private-sector pension scheme indexation (where scheme rules say RPI), (3) rail fare regulation in some years (now mostly CPI-based), (4) student loan interest (Plan 2 is RPI + variable component). From 2030, the ONS will align the RPI calculation methodology with CPIH, effectively decommissioning RPI as a separate indicator and making it equal to CPIH. This is a major change for index-linked gilt holders and RPI-linked pension recipients - typical impact is ~0.5-1.0% lower annual uprating after the 2030 alignment.
Why was UK inflation so high in 2022-2023?
UK CPI peaked at 11.1% year-on-year in October 2022 - the highest reading since 1981. Three main drivers combined. (1) Post-COVID supply chain disruption: shipping container shortages, semiconductor scarcity, port congestion, and worker absences in 2021-2022 raised production and logistics costs across most consumer goods. (2) Russia-Ukraine war energy shock from February 2022: UK natural gas prices peaked at 540p/therm in August 2022 vs typical 50-100p/therm range; petrol hit £1.91/litre. (3) Tight labour market: unemployment fell to 3.5% by late 2022 (lowest since 1974), driving wage growth that fed into services-sector prices. Bank of England raised Bank Rate from 0.1% (Dec 2021) to 5.25% (Aug 2023) in 14 consecutive hikes. The Energy Price Guarantee scheme (Oct 2022 - Jun 2023) capped consumer gas/electricity prices, with the Treasury absorbing the wholesale-vs-cap difference at a fiscal cost of approximately £40bn. By mid-2024 CPI had returned to the 2-3% range; by 2026 structural inflation appears stable.
How can I protect against UK inflation?
Five common UK inflation-protection strategies. (1) Index-linked savings: NS&I Index-linked Savings Certificates (RPI-linked but currently closed to new buyers); index-linked gilts via funds (Vanguard, iShares). (2) Pension contributions: tax relief on contributions plus long-run real-asset growth (UK equity DC pensions have averaged ~5-6% real annual return over 30 years). (3) Diversified equity portfolio: UK and global stocks generally outpace inflation over 10+ year holding periods (FTSE All-Share averaging 5-6% real annual return long-term). (4) Property: residential property has historically tracked or slightly exceeded UK inflation, with substantial volatility around the trend. Leverage amplifies returns but also losses. (5) Premium Bonds: NS&I prize-fund returns generally close to or above CPI in low/moderate inflation periods. None of these provide GUARANTEED inflation protection - even index-linked products typically lag CPI by 0.1-0.5% due to fee drag. Specialist financial advice essential for any significant inflation-hedging strategy. The single most reliable inflation hedge for most UK households is paying down debt at variable rates (which become more expensive in real terms during disinflation) and locking long-duration fixed-rate debt during inflation peaks.
How does inflation affect tax thresholds and allowances?
Most UK tax thresholds are frozen in nominal terms, not indexed. The Personal Allowance £12,570, higher-rate threshold £50,270, additional-rate threshold £125,140, IHT Nil Rate Band £325,000 and Residence Nil Rate Band £175,000 are all frozen until at least April 2030 (confirmed Autumn Budget 2024). The Annual Investment Allowance £1m, ISA allowance £20,000 and pension Annual Allowance £60,000 are also frozen. CGT annual exempt amount was actively cut from £12,300 (2022/23) to £3,000 (2024/25 onwards) — a real-terms reduction. National Insurance thresholds frozen at £12,570 PT and £50,270 UEL. Combined effect: each year of CPI inflation pushes more workers into higher tax bands and reduces the real-terms value of every allowance. Resolution Foundation estimates the cumulative fiscal drag effect through 2030 to be approximately £100bn of additional tax revenue vs an indexed-threshold counter-factual. The political durability of the freeze is high because it raises substantial revenue without explicitly "raising taxes" — the standard "stealth tax" criticism.
Related calculators and guides
- UK inflation calculator - interactive year-by-year purchasing power tool.
- Salary vs inflation £35,000 - real-term salary growth comparison.
- What £50,000 buys you - purchasing power across UK cities.
- UK State Pension guide - triple lock CPI uprating mechanics.
- Personal Allowance guide - £12,570 frozen through April 2030.
- £100k tax trap - fiscal drag pushing more earners into the PA-taper band.
- Budget 2026 summary - threshold freeze extension confirmation.
- All insights - more UK economic and pay-data deep dives.