UK inflation rate in 2015: 0.99%

UK Inflation Calculator


Inflation since 2015 and its effect on pound value

The composite price index (CPI) in 2015 was 1020. It was 1010 in the previous year. This change in CPI is used by the Office for National Statistics to calculate inflation.

According to the Office for National Statistics composite price index, the pound experienced an average inflation rate of 2.50% per year. Prices in 2018 are 7.7% higher than prices in 2015.

In other words, £100 in 2015 is equivalent in purchasing power to £107.67 in 2018, a difference of £7.67 over 3 years.

The current inflation rate is now 2.20%1. If this number holds, £100 today will be equivalent to £102.20 next year.

Inflation from 2015 to 2018
Cumulative price change 7.67%
Average inflation rate 2.50%
Converted amount (£100 base) £107.67
Price difference (£100 base) £7.67
CPI in 2015 1020
CPI in 2018 1098.27186

UK inflation chart from 1988 to 2017. Based on the UK Consumer Price Index.

How to calculate the inflation rate for £100 since 2015

This inflation calculator uses the following inflation rate formula:

CPI in 2018 / CPI in 2015 * 2015 GBP value = 2018 GBP value

Then plug in historical CPI values. The UK CPI was 1020 in the year 2015 and 1098.27186 in 2018:

1098.27186 / 1020 * £100 = £107.67

£100 in 2015 has the same "purchasing power" or "buying power" as £107.67 in 2018.

Here are calculations of buying power over time for £100 in 2015 (price index tracking began in 1750). Each of these GBP amounts below is equivalent in terms of what it could buy at the time:
Year GBP Value Inflation Rate
2015 £100.00 0.99%
2016 £101.70 1.70%
2017 £105.36 3.59%
2018 £107.67 2.20%*
* Not final. See inflation summary for latest details.

News headlines from 2015

Politics and news often influence economic performance. Here's what was happening at the time:

  • Barack Obama and Raul Castro, hold the first meeting between Cuban and American leaders since the Cuban Revolution.
  • The population of India reaches 1 billion (officially). The billionth baby was named Astha Arora.
  • Donald Trump announces his intention to join the US presidential campaign.
  • China brings an end to its one child policy, 35 years after it was first introduced.

Inflation Data Source

Raw data for these calculations comes from the composite price index published by the UK Office for National Statistics (ONS). A composite index is created by combining price data from several different published sources, both official and unofficial. The Consumer Price Index, normally used to compute inflation, has only been tracked since 1988. All inflation calculations after 1988 use the Office for National Statistics' Consumer Price Index, except for 2017, which is based on The Bank of England's forecast.

You may use the following MLA citation for this page: “Inflation Rate in 2015 | UK Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 22 Jun. 2018,

» Read more about inflation.