If you are a European investor comparing VUAA and VOO, you have probably noticed that VOO looks cheaper on paper and wondered whether you are leaving money on the table by holding the UCITS version. I have had this debate with myself and with readers many times, so here is the honest answer up front: for anyone who is not a US person, VUAA (the Vanguard S&P 500 UCITS ETF, accumulating, Irish-domiciled) is the practical choice. VOO is a fine fund, but it is built for Americans, and the things that make it attractive to them either do not apply to you or actively work against you.
Both funds track the S&P 500 and both are run by Vanguard, so this is not a contest between two strategies. It is a contest between two fund wrappers sitting in different countries, and for a European the country the fund lives in changes almost everything: whether you can buy it, how dividends are taxed on the way through, and what happens to your heirs. The headline fee is the least important part of the decision. Below I walk through each dimension the way I actually weigh it, then give a clear verdict by situation.
Can you even buy VOO as a European?
For most retail investors in the EU, the answer is simply no. Under the PRIIPs regulation, any fund sold to EU retail clients must publish a Key Information Document (KID). US-domiciled ETFs like VOO do not produce one, because Vanguard has no obligation to write it for the US market. Without that document, EU brokers cannot accept a retail buy order. So when you type VOO into DEGIRO, Trade Republic or most mainstream EU platforms, you either cannot find it or you get a hard rejection at checkout.
Comparing the whole family? Start with our VWCE vs X: the all-world comparison hub.
How we compare: fund picks here follow our published ETF selection methodology — TER, tracking difference, liquidity and domicile, in that order.
There are narrow exceptions. If you qualify as an elective professional client, or you trade US options and get assigned, some brokers such as Interactive Brokers will let you hold US-listed ETFs. But that is a workaround for a minority, not a route I would build a core portfolio around. VUAA, by contrast, is a UCITS fund designed for exactly this market, and every serious EU broker carries it on multiple exchanges.
Access alone settles the question for many readers. But even if you could buy VOO freely, the tax mechanics would still push you toward the Irish wrapper.
Withholding tax: the quiet advantage of Irish domicile
This is the part almost nobody sees on a fund page, and it is the strongest argument for VUAA. S&P 500 companies pay dividends, and when those dividends leave the US the government applies a withholding tax at source. The rate depends on the treaty between the US and the fund’s home country. Ireland has a favourable treaty, so an Irish-domiciled fund like VUAA typically suffers around 15% US withholding, rather than the default 30%.
Now compare the two paths. Inside VUAA, dividends arrive net of that treaty rate, and because VUAA is accumulating, they are reinvested inside the fund automatically. You never touch them, so there is nothing for you to reclaim. If you hold VOO directly, the US withholding applies to you as a non-resident, and then your home country generally taxes the same dividend again as income. In theory a double-tax treaty lets you credit the US tax against your domestic bill, but in practice the reclaim is slow, paperwork-heavy, and frequently caps what you recover. Many investors simply eat part of the double hit.
The net effect is that the Irish wrapper is more tax-efficient on US dividends for a typical European, and it reinvests for you without generating a taxable distribution in most jurisdictions. My Irish vs Luxembourg tax-efficiency guide covers why Ireland has become the default home for US-equity UCITS funds.
US estate tax: the risk hardly anyone mentions
Here is the one that genuinely worries me, because it is invisible until it is too late. VOO is a US-situs asset, and when a non-US person dies holding US-situs assets, their estate can be exposed to US federal estate tax. US citizens enjoy a very large exemption, but non-resident aliens do not: for US-situs assets it is only around $60,000. Above that threshold, the estate can face tax at rates climbing to 40% on the excess. Whether a treaty softens this depends on where you live, and many EU countries have no US estate-tax treaty at all.
So imagine a European who built a six-figure position in US-listed ETFs and then passed away. Their heirs could, in principle, find a large slice of it claimed by a foreign tax authority they never dealt with in life. VUAA sidesteps this cleanly, because a share in an Irish-domiciled UCITS fund is not a US-situs asset for estate-tax purposes. This is not a fringe technicality; it is a structural reason the professional consensus for non-US investors favours UCITS wrappers. The primary source worth reading is the IRS guidance on estate tax for nonresidents not citizens of the United States.
The fee gap, and why it does not decide this
On cost, VOO wins the headline. Its ongoing charge is roughly 0.03% a year, while VUAA sits around 0.07% (treat both as approximate 2026 figures and verify the current number on the official pages). So VOO is cheaper by about four basis points, which on a €100,000 position is around €40 a year. That is real, but it is dwarfed by the withholding-tax efficiency of the Irish structure and by the estate-tax exposure of holding US-situs assets. When people quote VOO’s fee as the reason to prefer it, they are optimising the one variable that matters least here and ignoring the two that matter most. To compare fees across S&P 500 UCITS options, our UCITS ETF comparison tool lets you line them up side by side.
Accumulating versus distributing, and the currency question
VUAA is the accumulating share class: it rolls dividends back into the fund, which suits long-term compounding and avoids a stream of small distributions to declare each year. If you would rather receive dividends as cash, Vanguard offers the same fund in a distributing class, VUSA. The holdings are identical; only the dividend handling differs. I compare the two in VUAA vs VUSA, and the right pick depends mainly on whether your country taxes accumulating funds favourably and whether you want the income.
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On currency: both VUAA and VOO are denominated in US dollars, and VUAA also trades in a euro line on European exchanges. Do not overthink this. The quote currency does not change your underlying exposure, which is to US companies earning in dollars either way. Your broker converts at purchase and sale, and the euro-quoted line is simply a convenience.
VUAA vs VOO at a glance
| Feature | VUAA (S&P 500 UCITS) | VOO (US-domiciled) |
|---|---|---|
| Index tracked | S&P 500 | S&P 500 (same) |
| Domicile | Ireland (UCITS) | United States |
| Available to EU retail? | Yes, on all major EU brokers | Usually blocked (no PRIIPs KID) |
| US dividend withholding | ~15% at fund level (treaty), reinvested internally | Withheld on you, then taxed again at home; reclaim is messy |
| US estate-tax exposure | None (not US-situs) | Yes, above ~$60,000 for non-residents |
| Ongoing charge (approx.) | ~0.07% | ~0.03% |
| Dividend handling | Accumulating (VUSA distributes) | Distributing (quarterly) |
| Best suited to | Non-US / European investors | US persons and US taxpayers |
My verdict: what I would actually buy
If you live in Europe and are not a US taxpayer, buy VUAA (or VUSA if you specifically want the dividends paid out). The access barrier alone rules VOO out for most people, and even where you can get around it, the withholding-tax efficiency and the absence of US estate-tax exposure make the Irish wrapper the sensible default. The four-basis-point fee saving is not worth the structural risks you take on to capture it.
Rates referenced here follow our 2026 ETF tax data, checked against official sources.
VOO is the right answer for a genuine US person, a dual citizen filing US returns, or someone whose entire tax life sits inside the American system. If that is you, VOO’s lower fee and simpler home treatment are real advantages. For everyone else on this side of the Atlantic, the UCITS route is not a compromise, it is the better-engineered product. If you are still choosing between S&P 500 and global exposure, I compare the two in VWCE vs VUAA; to weigh two S&P 500 UCITS funds, CSPX vs VUAA covers that; and for exact current figures, start with the VUAA factsheet.
For context: spxa vs spxp.
Often worth more than the TER gap: the free withholding tax and domicile calculator models fund-level US dividend withholding so you can compare like for like.
Frequently asked questions
Q: Why can’t I buy VOO on my European broker?
A: VOO is US-domiciled and does not publish a PRIIPs Key Information Document, which EU rules require before a fund can be sold to retail clients. Without that document, mainstream EU brokers must reject the buy order. VUAA is a UCITS fund built for the EU market and is freely available instead.
Q: Is VUAA really more tax-efficient than VOO for a European?
A: In most cases, yes. VUAA benefits from Ireland’s US tax treaty, so US dividends are withheld at roughly 15% at fund level and reinvested internally. Holding VOO directly usually means US withholding plus home-country tax on the same dividend, with a slow and often incomplete reclaim process. Confirm the details for your country with a local tax adviser.
Q: What is the US estate tax risk with VOO?
A: US-situs assets such as US-listed ETFs can expose a non-resident’s estate to US federal estate tax above a threshold of roughly $60,000, at rates reaching 40% on the excess. Whether a treaty reduces this depends on your country of residence. A share in Irish-domiciled VUAA is not a US-situs asset, so it avoids this exposure entirely.
Q: VOO has a lower fee, so isn’t it cheaper overall?
A: Only on the headline number. VOO’s ongoing charge is around 0.03% versus roughly 0.07% for VUAA, a gap of about four basis points. That saving is small next to the withholding-tax efficiency and estate-tax protection the Irish wrapper gives a European, which is why fee alone should not decide this.
Q: What is the difference between VUAA and VUSA?
A: They are the same Vanguard S&P 500 UCITS fund in two share classes. VUAA is accumulating, so dividends are reinvested inside the fund, while VUSA is distributing and pays them out as cash. The holdings are identical; choose based on whether you want income and how your country taxes accumulating funds.
Q: Does it matter that both funds are priced in US dollars?
A: Not to your underlying exposure. Both hold US companies that earn in dollars regardless of the quote currency, and VUAA also trades in a euro line on European exchanges for convenience. Your broker handles the currency conversion at purchase and sale, so the ticker’s quote currency is not something to optimise around.
European UCITS/ETF investor with 11+ years building a global dividend and index portfolio, and founder of Financial Expert Class. I write every guide here from first-hand experience investing across EU brokers and tax regimes — not theory. More about me →