How cost-of-living indices work

What a price-level index is

A comparative price-level index answers one question: if you bought the same basket of goods and services in every country, what would it cost relative to a shared benchmark? Eurostat sets the EU-27 average to 100. A country at 120 has prices roughly 20% above that average; a country at 80 is about 20% below. The index covers everyday consumption, food, housing, transport, healthcare, utilities and services, weighted to reflect typical household spending.

Why not just compare prices or salaries?

Raw local prices fail across borders for two reasons. First, exchange rates move and distort any conversion you make on a given day. Second, consumption patterns differ, what is a staple in one country is a luxury in another. A price-level index removes both problems by pricing an identical basket and expressing it on one scale. That is why a country in Eastern Europe becomes genuinely comparable to one in the Nordics, which raw euro figures never allow.

The same scale, three very different countries

Each bar is the overall price level relative to the EU-27 average of 100. The gap between Bulgaria and Switzerland is the real difference in everyday costs, not an exchange-rate artefact.

Where Eurostat's numbers come from

The indices are built from Eurostat's Harmonised Index of Consumer Prices (HICP) and its comparative price-level programme, which collects thousands of price observations for a common basket across participating countries each year. National statistical offices supply the raw prices; Eurostat harmonises and benchmarks them. The result is published annually as comparative price levels, with the EU-27 average normalised to 100, the figures used throughout this site, dated 2023.

How to read an index correctly

Three cautions. First, the overall index hides categories: a country can be cheap for groceries but expensive for rent, which usually dominates a budget, always check the category breakdown on a country page. Second, an index is a national average; capitals and big cities run above it. Third, a low cost of living does not mean a high standard of living, because incomes differ too, pair the cost index with income to judge real affordability, which is what the best-value ranking does.

Next, see the cheapest countries in Europe or read rent vs income to turn these indices into a real affordability judgement.

Frequently asked questions

Reading an index the way an economist would

When a statistician compares two countries, the price-level index is the first number they reach for, because it answers the only question that survives translation: how much does the same life actually cost here versus there? A nominal salary converted at today's exchange rate tells you almost nothing about living standards, since the rate can swing ten per cent in a quarter and says nothing about local prices. The comparative price level fixes both problems at once by pricing one standardised basket everywhere and dividing through by the EU-27 average. That is why international bodies use price levels rather than raw currency conversions whenever they rank countries by real income or productivity.

A useful habit is to read the index as a multiplier on your own budget. If you spend a certain amount each month where you live and you move to a country with an index twenty points higher, expect the same basket to cost roughly twenty per cent more, before you have changed a single habit. Move the other way and the saving is real, but only if your income does not fall by more than the price gap. This is the discipline the index imposes: it forces you to think in relative terms, comparing prices and income on the same scale, instead of being anchored to the headline numbers in your home currency. Once you internalise that, every ranking and country page on this site becomes a tool for a concrete decision rather than a table of abstract figures.

In short

An index is a comparison, not a price tag. Used well, it tells you how far your money goes in one country versus another, holding the basket constant. Treat it as a multiplier on your own budget, always pair it with income, and remember the national figure understates big-city costs. Do that and the rest of this site, the rankings, the country pages, the calculator, turns into a set of tools for a concrete decision.