Nobody charges you for inflation. It doesn’t appear on your payslip, it doesn’t show up in your bank statement, it doesn’t come with a notification. But it happens every month, and its cumulative effect on the money you hold can be greater than many explicit taxes.

Inflation is, at its core, the loss of purchasing power of money. One hundred euros today don’t buy the same as one hundred euros five years ago. And if those hundred euros are sitting still in an account earning no interest, in five years they will buy even less.

How inflation works in practice

The consumer price index — the CPI — measures how the cost of a representative basket of goods and services evolves. When the CPI rises 3%, it means that basket costs 3% more than it did a year ago.

For a household with monthly expenses of 2,500€, 3% inflation is equivalent to needing 75€ more per month to maintain exactly the same standard of living. Over a year, that’s 900€ of lost purchasing power. Without anyone taking anything from their account.

What makes inflation especially invisible is that it doesn’t operate all at once. There is no moment of rupture. The price of coffee goes up ten cents, the grocery bill grows a little each quarter, the car insurance renews slightly higher. Each adjustment seems reasonable in isolation. The aggregate effect, not so much.

Inflation doesn’t impoverish you in a day. It impoverishes you over years, without anyone signing anything.

What inflation does to your savings

Here is the concrete problem: if you have money sitting in an account with no interest — or with interest below inflation — you are losing money in real terms, even if the nominal balance doesn’t go down.

With 3% inflation and an account offering 0%, you lose 3% of purchasing power per year. On 10,000€, that’s 300€ less in real buying capacity over twelve months. Over five years, if inflation holds, you would be 1,500€ poorer without having spent anything.

The common mistake is confusing the balance with wealth. The balance is a number. Wealth is what that number can buy. And that second figure changes every day, even if the first one doesn’t move.

Idle money is not neutral. It’s a bet that prices won’t rise. Historically, that bet loses.

How to protect your purchasing power

This isn’t about speculating or taking risks that don’t fit your situation. It’s about not doing nothing in the face of a structural process.

Interest-bearing savings accounts. For liquid money — the emergency fund, short-term savings — an account offering between 2% and 3.5% APR is a reasonable first line of defense. It doesn’t beat inflation in every scenario, but it reduces the gap.

Investment in real assets. Over the long term, the assets that tend to preserve purchasing power are equities, real estate, and to a lesser extent, certain commodity-linked assets. Equities in particular have consistently outpaced inflation over ten-year or longer horizons, albeit with volatility along the way.

Reviewing the cost of debt. In periods of moderate inflation, fixed-rate debts become cheaper in real terms. If you have a fixed mortgage at 2% and inflation is at 3%, the real value of what you owe decreases. That’s the inverse effect.

The key is not to ignore inflation as if it were an abstract macroeconomic data point. It is an active factor in the personal finances of anyone who has money saved.

The first step: understanding what you have

Before moving anything, it’s worth making a simple diagnosis: what return are your current accounts and deposits offering? Is it above or below last year’s inflation rate?

If the difference is negative — if inflation exceeds your return — you have money that loses value every month. That doesn’t mean you should invest it all in equities. It means you should at least evaluate alternatives that reduce that gap.

Inflation doesn’t require complex moves or becoming a sophisticated investor. It requires not pretending it doesn’t exist.