Inflation

Inflation describes a sustained increase in average prices across an economy. Statistical agencies typically track it using price indexes, which measure the cost of a defined basket of goods and services over time. Headline measures include the full basket, while so-called core measures often exclude volatile components such as food and energy to show underlying trends. Because different indexes use different baskets and methods, the same period can show different inflation readings depending on which measure you look at. When you read commentary that cites an inflation number, check which index it refers to, which country it covers, and whether it is a year-on-year or month-on-month figure. Definitions of related terms such as deflation, disinflation and stagflation are worth confirming in a reference source before you rely on them, and the Glossary at /glossary can help you check the wording used in this guide.

The practical impact of inflation for investors is the gap between nominal and real returns. A nominal return is the stated percentage gain on an investment; the real return adjusts that figure for inflation over the same period. Cash and fixed-rate deposits are exposed to this effect because their nominal value does not adjust as prices rise. Fixed-coupon bonds can also lose real value when inflation runs above the level markets expected when the bonds were priced. Equities, property, commodities and inflation-linked bonds are often discussed as ways to manage inflation exposure, but their behaviour varies across periods and none of them offers a guaranteed outcome. Central banks generally respond to inflation through interest rate policy, and rate changes can move bond prices, equity valuations and currency exchange rates at the same time. Rather than assuming a fixed relationship, careful investors look at how their specific holdings behaved in past inflationary periods and treat that history as context, not prediction.

You cannot control inflation, but you can build it into how you evaluate accounts, products and costs. Start by comparing any quoted yield or expected return against a current official inflation measure for your home currency, so you are thinking in real terms. Next, review the costs attached to your accounts, because fees compound alongside inflation and reduce real returns further; confirm current fee schedules directly in your broker's own published documents rather than relying on third-party summaries or older articles. If you hold or are considering inflation-linked products, read the issuer's documentation to understand exactly which index they track and how adjustments are calculated. For broader background on portfolio concepts that pair with this topic, browse the Education hub at /education, and if you want to turn this knowledge into a structured broker research process, the Find my broker workflow at /find-my-broker sets out the questions to ask.