ETFs and indices · updated October 21, 2026
What UCITS means for an ETF
UCITS is a set of European Union rules for investment funds: how diversified they must be, how the money is kept, what information they must publish. If you invest from the EU or the UK, most brokers will only sell you UCITS ETFs.
How it is calculated
A UCITS ETF is based in Europe (usually Ireland or Luxembourg), publishes a key information document (KID) in your language and keeps its assets at a separate custodian bank. US ETFs (SPY, VOO) are not UCITS and have no KID, which is why European brokers cannot sell them to ordinary investors.
When UCITS can fool you
UCITS does not mean risk-free: the rules protect how the fund is run, not its value. A UCITS ETF can lose as much as the market it tracks.
Related terms
Questions about UCITS
Why can't I buy VOO or SPY from a European account?
Because they are US funds without the KID that EU rules require. The alternative is a UCITS ETF on the same index, such as VUSA or CSPX for the S&P 500.
Are UCITS ETFs taxed differently?
They can be. Irish-domiciled funds pay less tax on US dividends thanks to a tax treaty. Check the tax rules for your own situation.
These explanations are for information only. They are not a recommendation to buy or sell.
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