What is inflation and how does it affect your savings?

What is inflation, in plain words

What is inflation? It is a broad increase in the prices of goods and services across the economy, not just one product getting more expensive. The ECB puts it simply: with inflation, you can buy less for €1 today than you could yesterday.

If a weekly shop that cost €100 last year costs €103 this year, prices have risen 3%. Your €100 note is still a €100 note, but it now buys about 3% less. That loss of buying power (also called purchasing power) is what inflation does to money that sits still.

How inflation is measured: HICP and CPI

Statisticians track the prices of a big "basket" of things households buy: food, rent, energy, clothes, transport, holidays, phone plans and so on. A consumer price index (CPI) shows how the cost of that basket changes over time.

In the EU, the official measure is the Harmonised Index of Consumer Prices (HICP). "Harmonised" means every EU country measures it in the same way, so the figures can be compared. According to the ECB, the HICP covers around 700 goods and services on average. Each item counts according to how much households spend on it: petrol has about ten times the weight of coffee, so a 10% jump in fuel prices moves the index far more than a 10% jump in coffee.

Two terms you'll hear in the news:

• Headline inflation: the rate for the whole basket.
• Core inflation: the rate excluding energy, food, alcohol and tobacco, which tend to jump around. It gives a feel for the underlying trend.

Your own inflation rate can differ from the official one. If you drive a lot, or spend a big share of your income on energy, price rises may hit you harder than average.

The ECB's 2% target

The European Central Bank's job is to keep prices stable in the euro area. It aims for 2% inflation over the medium term, measured by the HICP. The target is symmetric: the ECB says it considers negative and positive deviations from 2% "equally undesirable". "Medium term" means it doesn't try to hit 2% every single month; it accepts swings and aims to bring inflation back over time.

Its main tool is interest rates. Raising rates makes borrowing more expensive and saving more attractive, which tends to cool spending and slow price rises. Cutting rates does the opposite.

Recent euro-area inflation

Eurostat's flash estimate, published on 4 November 2026, put euro-area annual inflation at 4.0% in October 2026, up from 3.8% in September. That is double the ECB's target.

Source: Eurostat. A flash estimate is the first figure and can be revised.

The table shows the rise is mostly about energy. Core inflation, at 2.5%, is much closer to target. That matters for your own budget: households that spend a lot on heating and fuel are feeling this more than the headline number suggests.

How inflation affects your savings

Here is what happens to €10,000 left in an account paying no interest, at different inflation rates.

Turn it around and you see the same effect on prices. A basket that costs €100 today would cost about €121.90 after 10 years at 2%, and about €134.39 at 3%.

A quick rule of thumb: divide 72 by the inflation rate to estimate how many years it takes for the buying power of cash to halve. At 3%, that's about 24 years; at 2%, about 36. Our guide to compound interest explains why this works.

Interest helps, but only if it keeps up. Say your €10,000 earns 2% a year while inflation runs at 3%. After 10 years you would have about €12,190 in the account, but in today's money that is only worth about €9,070. You'd see the balance grow and still be poorer.

How savers can respond

There is no way to make cash immune to inflation, but you can reduce the damage.

1. Keep short-term money in an interest-bearing account

Your emergency fund and money for the next few years shouldn't be invested in shares, because you may need it when markets are down. But it also doesn't need to sit at 0%. Compare savings accounts and fixed-term deposits, and check that the bank is covered by a deposit guarantee scheme. In the EU, these schemes guarantee deposits of up to €100,000. See our guide to how big your emergency fund should be.

2. Invest long-term money

For money you won't need for 10 years or more, many people invest in broad, low-cost funds such as ETFs. Historically, diversified stock markets have grown faster than inflation over long periods, though with big falls along the way. Our investing for beginners guide walks through the basics.

3. Review your budget as prices change

When energy or food prices jump, an old budget stops matching reality. Check your fixed costs once a year, switch energy or insurance contracts if you can, and raise your savings transfer when your pay rises. Our 50/30/20 rule is a simple framework for this.

Common mistakes

• Looking only at the number in your account. A balance that never changes is still shrinking in real terms.
• Taking big risks to "beat inflation" with money you need soon. Short-term money belongs in safe, accessible savings.
• Ignoring your own inflation rate. If energy is a big part of your spending, plan for bigger increases than the headline figure.
• Panicking over one month's figure. Inflation moves around. Long-term plans should rest on long-term averages, not one release.