Highlights

  • Inflation reduces the purchasing power of money held in savings over time.
  • The Consumer Price Index (CPI) is the most widely used measure of inflation.
  • Core inflation provides insights into long-term price trends by excluding volatile items.
  • Keeping inflation within a 2–3 per cent target helps protect savings and supports economic stability.

Inflation refers to the rise in prices for goods and services over a specified period. It can be measured broadly, such as the general increase in the cost of living, or narrowly, for specific goods or services like food, personal care, or housing. Regardless of the method used, inflation reflects the extent to which the cost of a particular set of items has increased, usually over a year.

How Inflation Influences Daily Life

Household living costs depend on the prices of a wide variety of goods and services, along with the proportion each category represents in a typical budget. To track these changes, government agencies conduct surveys and establish a “basket” of commonly purchased items. Tracking the cost of this basket over time forms the basis of the Consumer Price Index (CPI).

The Connection Between Inflation and Savings

Savings are funds set aside for future use. As inflation rises, the purchasing power of saved money declines because it can buy fewer goods and services. For instance, if inflation is 3 per cent, an item costing AUD 100 today would cost AUD 103 next year. Unless savings earn a return higher than the inflation rate, their real value diminishes.

This is particularly relevant for long-term savings, such as retirement funds. Even moderate inflation, compounded over the years, can significantly reduce the effective value of savings if steps are not taken to protect against it.

Measuring Inflation

The CPI is the most widely recognised measure of consumer inflation. It monitors the cost of a basket of goods and services that households typically purchase, including housing, transport, food, and healthcare. Comparing the current cost of this basket to a base year provides the percentage change, which represents consumer price inflation.

To better capture persistent trends, core inflation excludes more volatile items like food and energy, as well as government-regulated prices. Broader measures, such as the GDP deflator, track price changes across the entire economy, providing a more comprehensive view.

Inflation Targets and Policy

In Australia, the Reserve Bank, in consultation with the Government, aims to keep annual consumer price inflation between 2 and 3 per cent. This target seeks to prevent savings from losing value due to high inflation, while also avoiding deflation, which can discourage spending and investment.

A predictable inflation environment supports the preservation of money’s value over time and aids in planning for households, businesses, and governments alike.

Long-Term Impact on Savings

Even moderate inflation can have a noticeable effect over the long term. For example, AUD 10,000 held in savings would only have the purchasing power of approximately AUD 8,200 after ten years at a 2 per cent annual inflation rate if no interest is earned. This demonstrates why monitoring inflation is crucial for savers and policymakers.

Conclusion

Inflation is a key factor in determining the future value of savings. It gradually reduces purchasing power unless returns on savings exceed the rate of inflation. Tracking indicators such as the CPI and core inflation helps in understanding these effects. Maintaining inflation within the 2–3 per cent target assists in protecting savings and contributes to a more predictable economic environment.