Index investing means buying the whole market through a low-cost fund instead of trying to pick winning shares. It is the simplest way for most people to grow their savings over the long term, and it works just as well in Europe as in the United States once you know which products to use.
In short
- An index fund or ETF copies a market index, such as all the world’s large companies, at a very low cost.
- Over long periods, low costs and broad diversification have beaten most attempts to pick winners.
- European investors use UCITS ETFs or index funds, held at a regulated broker, ideally bought every month.
What is an index?
An index is a list of companies that represents a market, with each company weighted by its size. The FTSE All-World and MSCI ACWI indices cover thousands of large and mid-sized companies across developed and emerging countries. The S&P 500 covers 500 large US companies. The MSCI World covers developed countries only.
An index fund or ETF (exchange-traded fund) simply holds the companies in the index in the same proportions. When the market rises, your fund rises; when it falls, your fund falls. You never need to decide which company will do best.
Why index investing works
- Low costs. Global index ETFs charge around 0.1-0.2% a year. Many bank funds in Europe still charge 1.5% or more. Over 30 years, that difference can be worth tens of thousands of euros.
- Broad diversification. One global ETF spreads your money across thousands of companies and dozens of countries, so no single failure can sink you.
- No need to beat anyone. S&P’s long-running SPIVA reports show that most professionally managed funds fail to beat their benchmark index over 10-20 years, largely because of their higher costs.
- It protects you from yourself. A simple plan you automate is much easier to stick to than a strategy that needs constant decisions.
ETFs or index funds?
Both track an index. The difference is how you buy them:
| ETF | Index mutual fund | |
|---|---|---|
| How you buy | On a stock exchange, through a broker | Directly from the fund or through a platform |
| Price | Changes during the day | Set once a day |
| Availability in Europe | Very wide, through UCITS ETFs | Varies a lot by country |
| Tax advantages | Depends on your country | Some countries, such as Spain, allow tax-free switches between funds |
For most Europeans, ETFs are the easier option because the same products are available across the continent. In a few countries, index funds have tax advantages; our country guides explain where.
Why Europeans buy UCITS ETFs
If you live in the EU, you generally cannot buy US-listed ETFs such as VOO or VT, because they do not publish the key information document EU rules require. Instead you buy UCITS ETFs, usually domiciled in Ireland, which track the same indices. Read why Europeans can’t buy US ETFs and why the domicile of your ETF matters.
What you need to start index investing
- An emergency fund of a few months of expenses in a savings account, so you never have to sell investments in a hurry.
- A regulated broker with low fees for small, regular purchases. Compare options in the best brokers for ETF investors in Europe.
- One global ETF as your core holding. Our comparison of the best all-world ETFs covers the main options.
- A monthly savings plan that buys automatically after payday. See brokers with free ETF savings plans.
- A rule for bad markets: decide now that you will keep buying when prices fall.
How much risk should you take?
Stocks grow more over the long term but can fall 30-50% in a bad year. Bonds grow less but fall less. A simple way to control risk is to split your money between a global stock ETF and a bond ETF in your own currency:
| If you need the money in… | A common starting point |
|---|---|
| More than 15 years | Mostly or entirely stocks |
| 5 to 15 years | Stocks plus 20-40% bonds |
| Less than 5 years | Mostly savings and bonds, not stocks |
These are general guides, not rules. The right mix is the one you will not abandon during a crash. Our three-fund portfolio guide shows example allocations.
Costs to watch
- Fund costs (TER): the yearly fee of the ETF, taken from the fund automatically.
- Broker fees: commissions per purchase, custody fees and currency conversion fees.
- Spreads: the small difference between buying and selling prices, lower for large, popular ETFs.
- Taxes: they depend entirely on where you live. See how ETFs are taxed in Europe.
A realistic example
If you invest €200 a month for 30 years and your portfolio grows by 6% a year after costs, you would put in €72,000 and could end up with roughly €200,000. Returns are never guaranteed and will vary from year to year, but the example shows why starting early matters. Try your own numbers in our compound interest calculator.
Common beginner mistakes
- Waiting for the right moment. Nobody can time the market reliably. Starting matters more than timing; see lump sum vs monthly investing.
- Owning many overlapping ETFs. Five ETFs that hold the same companies add complexity, not diversification.
- Chasing last year’s winner. The best-performing sector or country rarely stays on top.
- Selling in a crash. Falling prices are normal and temporary in a long-term plan; selling locks in the loss.
Next steps
Read how to start investing in Europe with €100 a month for a step-by-step setup, then choose your ETF and your broker.
Sources
This article is for educational purposes only and is not financial advice. Investing involves risk, including the loss of capital.