When the news says inflation was 3 percent, it means statisticians priced a large basket of goods and services in two different months and compared the totals. The basket is meant to resemble what a typical household buys: rent, food, fuel, clothes, phone bills, haircuts.
Two choices shape the answer. The first is what goes into the basket and how much weight each item gets. Housing and food take a bigger share than concert tickets, so a rise in rent moves the headline more than a rise in ticket prices. The second is how change is handled: when a product improves, or when shoppers switch to a cheaper substitute, the statisticians adjust, and economists argue about how well they do it.
Why your inflation can differ from the headline
The basket is an average, and nobody is average. A student who rents a room and rarely drives has a different basket from a family with two cars and a mortgage. If the prices that rose fastest are the ones you buy most, your own inflation is higher than the number on the news, and the other way round.
Prices people notice most, such as petrol and groceries, are bought often, so they feel larger than their weight in the basket. Prices that change rarely, such as a television, barely register even though they can fall for years.
What the number does not tell you
Inflation says how fast prices are rising, not whether they are fair or whether wages are keeping up. A 3 percent rise in prices alongside 5 percent growth in pay leaves most households better off; the same rise alongside 1 percent growth does not. That is why economists read inflation and wages together.
Key takeaways
- Headline inflation compares the cost of a fixed basket of goods and services across two dates.
- The weights matter: items households spend more on move the number more.
- Your own inflation depends on what you buy, so it can sit above or below the headline.
- Read it next to wage growth, not on its own.