Australian inflation rate in 1991: 3.13%

Australia Inflation Calculator


Inflation in 1991 and Its Effect on Dollar Value

Purchasing power decreased by 3.13% in 1991 compared to 1990. On average, you would have to spend 3.13% more money in 1991 than in 1990 for the same item.

In other words, AU$1 in 1990 is equivalent in purchasing power to about AU$1.03 in 1991.

The 1990 inflation rate was 7.48%. The inflation rate in 1991 was 3.13%. The 1991 inflation rate is higher compared to the average inflation rate of 2.39% per year between 1991 and 2019.

Inflation rate is calculated by change in the consumer price index (CPI). The CPI in 1991 was 59.30. It was 57.50 in the previous year, 1990. The difference in CPI between the years is used by the Bureau of Statistics to officially determine inflation.

Inflation from 1990 to 1991
Average inflation rate 3.13%
Converted amount (AU$1 base) AU$1.03
Price difference (AU$1 base) AU$0.03
CPI in 1990 57.500
CPI in 1991 59.300
Inflation in 1990 7.48%
Inflation in 1991 3.13%

AUD inflation chart from 1922 to 2017

How to Calculate Inflation Rate for AU$1, 1990 to 1991

This inflation calculator uses the following inflation rate formula:

CPI in 1991CPI in 1990
1990 AUD value
1991 AUD value

Then plug in historical CPI values. The Australian CPI was 57.5 in the year 1990 and 59.3 in 1991:


AU$1 in 1990 has the same "purchasing power" or "buying power" as AU$1.03 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
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

59.3 - 57.557.5

News headlines from 1990

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 government of Australia's annual (CPI) as provided by the Reserve Bank of Australia. The consumer price index was established in 1922 and is tracked by Australian Bureau of Statistics (ABS).

You may use the following MLA citation for this page: “Inflation Rate in 1991 | Australia Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 24 Apr. 2019,

Special thanks to QuickChart for providing downloadable chart images. is a reference website maintained by the Official Data Foundation.

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