Inflation Record£100 in 2015 → Today (United Kingdom)
Official data verified · CPI (ONS) · Annual average · Not seasonally adjusted · Data through September 2026 (fetched 2026-11-02) · CPI All items (D7BT), MM23 dataset
£142.01
+42.0% cumulative inflation · 2015–2026
Your £100 in 2015 would have the purchasing power of £142.01 in United Kingdom today.
What this means
- Purchasing power: £100 in 2015 had the same average buying power as £142.01 in 2026.
- Price level change: the overall consumer price level rose by 42.0% across this 11-year span; the purchasing power of a pound changed by -29.6%.
- This measures the broad basket of consumer goods and services (CPI (ONS)). Individual expenses moved at different rates.
What this means in other amounts
| In 2015 | Worth in 2026 |
|---|---|
| £1 | £1.42 |
| £5 | £7.10 |
| £10 | £14.20 |
| £20 | £28.40 |
| £50 | £71.01 |
| £100 | £142.01 |
| £500 | £710.05 |
| £1,000 | £1,420.10 |
| £10,000 | £14,201.04 |
| £100,000 | £142,010.39 |
Key facts about 2015
- Consumer prices rose 0.1% in 2015 — the 38th-largest annual increase in the 1988–2026 record.
- Measured by the older RPI instead of CPI, £100 in 2015 would equal £160.52 in 2026 — the two indexes have drifted apart, which is why this site never blends them.
- In the decade after 2015, prices rose 38.4% in total.
£100 in 2015, decade by decade
| Year | Worth | Cumulative price change |
|---|---|---|
| 2025 | £138.36 | +38.4% |
| 2026 | £142.01 | +42.0% |
Monthly CPI in 2015
| Period | Index | Change vs same period, prior year |
|---|---|---|
| January | 99.3 | 0.3% |
| February | 99.5 | 0.0% |
| March | 99.7 | 0.0% |
| April | 99.9 | -0.2% |
| May | 100.1 | 0.1% |
| June | 100.2 | 0.0% |
| July | 100.0 | 0.1% |
| August | 100.3 | 0.1% |
| September | 100.2 | -0.1% |
| October | 100.3 | -0.1% |
| November | 100.3 | 0.2% |
| December | 100.3 | 0.2% |
Annual average for 2015: 100.008
Verify this calculation
Series: CPI All items (D7BT), MM23 dataset; base 2015=100; not seasonally adjusted.
Index (2015 annual average): 100.008 · Index (2026 annual average): 142.022 · Ratio: 1.4201
Formula: amount × (indexend / indexstart). Formula v1.0 — annual-average CPI, NSA (per-country basis on each methodology page). Source: Office for National Statistics.