ETF základy
What Is an ETF and How Does It Differ from a Mutual Fund
Key takeaways
- You trade an ETF on the stock exchange in real time, just like a stock — a mutual fund can only be bought or sold once a day at its accounting price.
- Most ETFs passively track an index and therefore don't need an expensive team of analysts — which is why fees (TER) tend to be significantly lower.
- A UCITS ETF with Irish domicile (ISIN starting with IE) offers the best protection for European investors and favorable withholding tax on dividends at source.
- Diversification is built into an ETF from your very first purchase — a single ETF can hold hundreds or thousands of securities.
- An actively managed mutual fund in the Czech Republic can cost 1.5–2% per year; an index ETF is typically below 0.25%.
An ETF (Exchange Traded Fund) is a fund traded on a stock exchange that typically passively tracks an equity or bond index — and it can be bought just as easily as a single share.
How does an ETF actually work?
The fund buys securities in exactly the proportions dictated by the index it tracks. When you buy one share of an ETF, you indirectly own a small piece of every company in the index. The ETF's price changes throughout the trading day based on supply and demand on the exchange — unlike a mutual fund, where you receive the price only at the end of the day.
Why are ETFs cheaper than active funds?
An active mutual fund pays a team of portfolio managers who try to beat the market. An ETF, by contrast, simply follows an index mechanically, so management is automated. The result? Annual fees (TER) for global index ETFs typically range between 0.07% and 0.25%, while an active fund in the Czech Republic charges 1.5–2%. Over a 20-year horizon, the difference in the final portfolio can easily be tens of percentage points.
What is a UCITS ETF and why does domicile matter?
For Czech investors, the most important ETFs are those regulated under the European UCITS framework — you can recognize them by an ISIN starting with IE (Irish domicile). Ireland has a tax treaty with the United States, so withholding tax on US dividends at source is 15% instead of 30%. Read more in the article on why UCITS ETFs with Irish domicile.
ETF vs. mutual fund: key differences
- Trading: ETF at any time during exchange hours; mutual fund once a day.
- Fees: ETF typically 0.07–0.40% per year; active fund 1–2%.
- Management: ETF passive (index); fund active (team of managers).
- Minimum investment: For an ETF, the price of one share is enough — sometimes as little as 10–50 EUR.
- Transparency: The composition of an ETF is published every day.
Are ETFs suitable for beginners?
Yes. Thanks to their low minimum investment, high diversification, and transparent composition, ETFs are the ideal tool for anyone who wants to build their first portfolio. The key is to choose the right broker — see the article on how to choose a broker in the Czech Republic.
This article is educational in nature and does not constitute investment advice.
FAQ
What is an ETF in simple terms?
A fund traded on a stock exchange that tracks an index (for example the S&P 500 or the global equity market). You buy it like a stock, but you get diversification across hundreds of companies at once for a low annual fee.
What is the main difference between an ETF and a mutual fund?
You can buy and sell an ETF at any point during the trading day at the current market price. A mutual fund is priced only once a day. ETFs are also generally much cheaper — their TER is usually below 0.25%, while an active fund charges 1–2%.
Why choose an ETF with Irish domicile?
Ireland has a tax treaty with the United States, so dividends from US equities are taxed at 15% at source instead of 30%. The ISIN of such funds starts with IE. For a Czech investor, this is the most practical choice.
How much money do I need for my first ETF?
It depends on the broker and the price of one share. Popular funds like iShares Core MSCI World have a share price in the range of tens to hundreds of euros. Some brokers also offer fractional purchases starting from 1 EUR.