This week on Money & Investing, Mitch Olarenshaw examines why Australia's official inflation rate may not reflect the real increase in everyday living costs, from food and electricity to property prices.

The official Consumer Price Index (CPI) figure can look manageable, but household expenses can tell a different story. Food, energy and other essential costs have increased significantly beyond what inflation alone would suggest, meaning the day-to-day cost of living has risen by more than the headline number indicates for many households. Part of the gap comes down to how the index is built: the Australian Bureau of Statistics (ABS) tracks a weighted basket of goods and services averaged across all households, so anyone spending a larger share of their budget on the essentials rising fastest will experience a personal inflation rate above the headline. The ABS itself acknowledges this distinction by publishing separate Selected Living Cost Indexes, which include items such as mortgage interest charges that the CPI excludes, and those measures have at times risen faster than the headline CPI for employee households.

Electricity provides a clear example. A standard kilowatt-hour cost around 11 cents in 2000. Adjusted for inflation, that price would be about 22 cents today, yet it actually stands at roughly 34 cents. Residential electricity bills combine wholesale energy costs with network charges and environmental scheme costs, so movements in any single component can take bills away from the path of general inflation. Higher energy costs also ripple through the wider economy, affecting manufacturing, food production and storage.

Housing shows an even larger gap. An average Australian property was worth around $200,000 in 2000. After adjusting for inflation, that figure would be close to $400,000 today. Instead, average property prices sit at around $1.1 million in the figures discussed.

Higher wages and higher operating costs can also feed into product prices. Businesses facing increased labour and energy costs may need to charge more, while workers need higher wages to keep up with rising living expenses. This dynamic can create a cycle of rising costs and prices.

The official measure carries practical weight beyond headlines: the Reserve Bank of Australia frames monetary policy around keeping CPI inflation within its 2-3 per cent target band, and the index is used to adjust payments such as the Age Pension and other indexed thresholds. Where a household's costs rise faster than the index, adjustments tied to the CPI can lag that household's lived experience.

For individuals whose personal cost of living is rising faster than the official inflation rate, keeping all money in cash may not be enough, the discussion notes. Property and income-producing investments are highlighted as potential ways to help protect purchasing power over time.

A term deposit paying around 5% can appear attractive, but that return needs to be compared with the actual increase in an individual's living costs. Investing, the segment suggests, can provide an opportunity to build wealth and potentially stay ahead of inflation. For readers tracking the gap between official and lived inflation, the ABS publishes the quarterly CPI alongside a monthly CPI indicator and regularly updates the basket weights that shape the headline figure — releases worth watching when judging how representative the official rate is of personal circumstances.

Disclaimer: Wealth Magnet Pty Ltd (ABN 52 618 868 830), trading as Australian Investment Education, is a Corporate Authorised Representative (CAR no. 1255231) of Grange Financial Services Pty Ltd (AFSL No. 488609). The information provided is general in nature and should not be relied upon as personal financial advice. Readers should consider their own circumstances and conduct their own research before making any investment decisions, and where appropriate seek advice from a suitably qualified and licensed financial adviser. The material is for information only and should not be treated as investment advice.