£

# UK inflation rate in 1991: 5.87%

### Inflation in 1991 and Its Effect on Pound Value

Purchasing power decreased by 5.87% in 1991 compared to 1990. On average, you would have to spend 5.87% more money in 1991 than in 1990 for the same item.

In other words, £1 in 1990 is equivalent in purchasing power to about £1.06 in 1991.

The 1990 inflation rate was 9.46%. The inflation rate in 1991 was 5.87%. The 1991 inflation rate is higher compared to the average inflation rate of 2.74% per year between 1991 and 2019.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 1991 was 526.70. It was 497.50 in the previous year, 1990. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation.

 Average inflation rate 5.87% Converted amount (£1 base) £1.06 Price difference (£1 base) £0.06 CPI in 1990 497.500 CPI in 1991 526.700 Inflation in 1990 9.46% Inflation in 1991 5.87%

### How to Calculate Inflation Rate for £1, 1990 to 1991

This inflation calculator uses the following inflation rate formula:

CPI in 1991CPI in 1990
×
1990 GBP value
=
1991 GBP value

Then plug in historical CPI values. The UK CPI was 497.5 in the year 1990 and 526.7 in 1991:

526.7497.5
×
£1
=
£1.06

£1 in 1990 has the same "purchasing power" or "buying power" as £1.06 in 1991.

To get the total inflation rate for the 1 years between 1990 and 1991, we use the following formula:

CPI in 1991 - CPI in 1990CPI in 1990
×
100
=
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

526.7 - 497.5497.5
×
100
=
6%

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

• Nelson Mandela is released having spent 27 years in South African prison.
• The Hubble Space Telescope takes its first photos from space.
• Dr Penny Jamieson, becomes the first woman to be made an Anglican Bishop, in New Zeeland
• The United States sends troops to Saudi Arabia, marking the beginning of Operation Desert Shield.

### Data Source & Citation

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 1991 | UK Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 15 Sep. 2019, https://www.officialdata.org/UK-inflation-rate-in-1991.