ETF základy
Currency Classes of ETFs and Currency-Hedged Funds: When Does It Matter?
Key takeaways
- The currency class of an ETF only determines the currency in which you see the return in your portfolio — not what assets the fund holds.
- An unhedged ETF denominated in EUR or CZK carries the same underlying risk in practice (e.g., USD equities in the S&P 500).
- Hedged ETFs eliminate exchange rate fluctuations against the base currency, but at the cost of hedging expenses (typically 0.1–0.5% p.a. additional).
- For long-term investors with a 10+ year horizon, currency hedging often adds costs without a clear benefit.
- CZK share classes of UCITS ETFs are rare; the more practical choice is a EUR share class with natural currency diversification through the underlying portfolio.
The currency class of an ETF determines the denomination in which the fund reports returns and issues units — it does not change the composition of the underlying portfolio or the investor's fundamental currency exposure. Many beginning investors confuse this distinction and end up paying for hedging they do not need.
Share class ≠ currency of the underlying assets
Consider a global ETF tracking the MSCI World index. The fund holds American, Japanese, British, and European equities in their domestic currencies. If you buy the EUR share class, you see the return in euros — but you are still exposed to exchange rate movements of USD, JPY, and GBP against EUR. You just receive your statement in euros.
What does a hedged share class (Hedged) do?
A fund with the suffix EUR Hedged or CZK Hedged actively hedges currency risk using forward contracts or swaps. The result:
- Lower currency volatility — returns better reflect the performance of the assets themselves without exchange rate fluctuations.
- Hedging costs — typically add 0.15–0.5% per year, depending on interest rate differentials between currencies.
- Interest rate differential — if the Czech koruna carries higher interest rates than the euro or dollar, hedging the koruna is expensive. In an environment where the CNB holds rates above the ECB, this can add meaningful costs.
When does hedging make sense — and when does it not?
Hedging is particularly worthwhile with a short investment horizon (up to 3 years), when investing in bond ETFs (where a currency swing can wipe out the entire return), or when a precisely planned expenditure in korunas is involved. For equity ETFs with a 10-year or longer horizon, historical data shows that currency fluctuations largely cancel out over time.
How to identify a share class at a glance
Look for the currency abbreviation after a dash in the ETF name: "iShares Core MSCI World UCITS ETF USD (Acc)" — the share class currency is USD. The suffix "EUR Hedged" or "H EUR" signals hedging. The ISIN always starts with "IE" for Irish domicile. The comparison between accumulating and distributing funds (Acc vs. Dist) is covered in the article accumulating vs. distributing ETFs.
FAQ
Does the currency class of an ETF affect its return?
The class itself does not — it only denominates the return in a different currency. The return is affected by whether the fund is hedged. A hedged share class limits currency fluctuations but adds hedging costs of 0.15–0.5% p.a.
Does it make sense for a Czech investor to choose a EUR class instead of CZK?
Yes — CZK share classes are very rare. The practical choice is a EUR share class of an unhedged fund. If the koruna strengthens, the CZK-converted return will be lower — but over a 10-year horizon, currency fluctuations largely cancel out.
When is a Hedged ETF worthwhile?
Particularly for bond ETFs, where a currency swing can wipe out the entire return, or for investment horizons under 3 years with a planned expense in korunas. For equities with a 10+ year horizon, hedging is generally an unnecessary cost.