Two ETFs can hold the same 500 American companies, in the same weights, and still leave a non-US investor with different results. The difference is where the fund itself is set up. A US-domiciled ETF is a US company, so its payouts are US dividends to you, with US withholding on top and US estate tax if you die holding it. An Ireland-domiciled UCITS ETF is an Irish company that pays the US tax itself, at a treaty rate, and then passes the rest on without further deduction. This comparison puts numbers on each difference: withholding, estate tax, whether EU residents may buy, accumulating versus distributing shares, and costs and liquidity. It uses a matched pair, the US-listed iShares Core S&P 500 ETF (IVV) and the Irish iShares Core S&P 500 UCITS ETF (CSPX), to show the gap in published returns. The invest-from-abroad hub has the wider picture, and what an ETF is covers the fund structure itself.
What is the difference between US and Irish-domiciled ETFs?
Both can track the same index, but a US ETF is a US company regulated by the SEC and an Irish ETF is an Irish UCITS fund. That legal home drives the tax.
| Feature | US-listed ETF, such as IVV | Irish-domiciled UCITS ETF, such as CSPX |
|---|---|---|
| Legal home and rulebook | US company under the Investment Company Act of 1940 | Irish company under the EU UCITS directive |
| Main listings | NYSE Arca, Nasdaq, Cboe, in dollars | London, Xetra, Euronext, Borsa Italiana, SIX and others, in several currencies |
| Yearly fee for the S&P 500 example | 0.03% | 0.07% |
| US tax on dividends the fund receives | None | Typically 15% under the US-Ireland treaty |
| Tax taken from payouts to you | 30%, or your treaty rate | No Irish withholding for non-residents |
| Income | Paid out each quarter | Accumulating or distributing share classes |
| US estate tax | US property | Not US property |
| Sold to EU retail investors | Generally not, for lack of a key information document | Yes |
| Concentration limit | No issuer above 25% of assets; positions over 5% capped at 50% in total | 5/10/40 rule, with up to 35% in one issuer for index trackers |
Most of the comparison follows from the fourth and fifth rows. The last row matters only for very concentrated indexes, where State Street notes that UCITS index funds can hold larger top weights than US funds, so two funds on the same index can drift slightly apart.
How much does dividend withholding cost on each?
A US-listed ETF's payouts lose 30% to US withholding unless a treaty lowers it, while an Irish fund loses about 15% inside the fund and nothing more.
There are two levels at which US tax can bite. Inside a US-listed fund, dividends from US companies arrive untaxed, but when the fund pays them out to a non-US holder they become US-source dividends, withheld at 30% or at the rate your country's treaty sets, as long as a valid W-8BEN is on file. An Irish fund faces the US tax one level earlier: US companies pay it dividends net of US withholding, which Article 10 of the US-Ireland treaty caps at 15% for holdings below 10% of a company. Ireland then takes nothing from payouts to non-residents of ETFs held through recognized clearing systems, according to Irish Revenue's guidance on investment undertakings.
The US-listed fund's rate is therefore your own treaty rate, and the Irish fund's rate is Ireland's. The IRS treaty figures for portfolio dividends, from the snapshot used across this site, look like this for a few countries whose residents can buy either kind of fund:
| Country | Tax treaty | Dividends (most investors) | Dividends (10%+ corporate owners) | Interest |
|---|---|---|---|---|
| Ireland | Yes | 15% | 5% | 0% |
| Japan | Yes | 10% | 5% | 10% |
| South Korea | Yes | 15% | 10% | 12% |
| China | Yes | 10% | 10% | 10% |
| Thailand | Yes | 15% | 10% | 15% |
| Indonesia | Yes | 15% | 10% | 10% |
| Hong Kong | No | 30% | 30% | 30% |
| Malaysia | No | 30% | 30% | 30% |
Where your rate is above 15%, the Irish fund wins on withholding; where it is below, the US-listed fund does. Rates for every country, and how to claim them, are in US dividend withholding tax by country, and the form itself is explained in Form W-8BEN explained.
Worked example: $100,000 in an S&P 500 ETF for 10 years, by withholding rate
Assumptions: a 1.1% dividend yield, IVV's trailing 12-month yield on September 30, 2026; prices rising 5% a year, an assumption for the arithmetic rather than a forecast; dividends reinvested after withholding; yearly fees of 0.03% for the US-listed fund and 0.07% for the Irish one; no home-country tax or trading costs.
| Fund and investor | Withholding | Value after 10 years | Dividends lost to US tax |
|---|---|---|---|
| US-listed, investor in a country with no treaty | 30% | $174,740 | about $4,297 |
| US-listed, investor in India or the Philippines | 25% | $175,651 | about $3,590 |
| US-listed, investor with a 15% treaty rate | 15% | $177,486 | about $2,165 |
| US-listed, investor in Mexico or Japan | 10% | $178,410 | about $1,447 |
| Irish accumulating, any non-Irish investor | 15% inside the fund | $176,817 | about $2,161 |
The Irish fund ends $2,077 ahead of the US-listed fund for an investor with no treaty and $1,166 ahead for one taxed at 25%. With a 15% treaty rate, both lose the same dividends, and the US-listed fund's lower fee leaves it $669 ahead; at 10%, it leads by $1,593.
The yield matters as much as the rate: the drag scales with the dividends paid, so it is smaller on growth-heavy indexes and larger on high-dividend funds. Dividend investing basics explains the yield measures funds quote, and the compound interest calculator can rerun the arithmetic with your own numbers.
Does the published track record show the drag?
Yes, partly: over the 10 years to September 30, 2026, IVV returned 15.30% a year and CSPX 14.99%, but IVV's figure assumes every dividend was reinvested untaxed.
Fund returns are published before investor-level tax. CSPX's figures already have the 15% US withholding inside the fund taken out, because the fund only ever received the net dividend. IVV's figures do not include the 30% or treaty-rate withholding that a non-US holder suffers on each payout, so a non-US investor's own return on IVV was lower than the published one.
| Period to September 30, 2026 | IVV, before investor tax | CSPX, after fund-level tax | Gap |
|---|---|---|---|
| 1 year | 15.71% | 15.47% | 0.24 point |
| 10 years, per year | 15.30% | 14.99% | 0.31 point |
The 10-year gap of about 0.31 point a year is consistent with the Irish fund's 15% tax on a dividend yield that averaged roughly 1.5% to 2% over the decade, plus the 0.04-point fee difference. On that reading, a holder taxed at 30% on IVV's payouts lost about twice what CSPX lost inside, ending near 14.8% a year and behind CSPX, while a holder taxed at 15% ended roughly level with it. Live prices and history for SPY, another US-listed S&P 500 fund, are on the SPY data page.
Are US-listed ETFs subject to US estate tax?
Yes. Shares of a US-registered fund are US property for a non-resident's estate, while shares of an Irish fund, like other non-US company stock, generally are not.
The IRS instructions for Form 706-NA put it simply: stock of corporations organized under US law is located in the United States, wherever the certificates are kept, and all other corporate stock is located outside it. An ETF registered in the United States is such a corporation. The temporary rule that let estates look through a US fund to its non-US or debt assets covered only deaths from 2005 through 2011. An estate with more than $60,000 of US-situated assets must file Form 706-NA, and the credit is $13,000, which offsets the tax on the first $60,000 of US assets.
Worked example: $150,000 in US-listed ETFs versus Irish ETFs at death
- A non-US investor from a country with no US estate tax treaty dies holding $150,000 of US-listed ETFs and no other US assets.
- Table A tentative tax on $150,000: $38,800.
- Less the $13,000 credit: $25,800 of US estate tax, about 17% of the holding, and the broker will normally wait for IRS clearance before releasing the shares.
- The same exposure through Irish-domiciled ETFs: generally no US estate tax and no US filing, though the broker will still want estate documents.
Some countries' estate tax treaties change this result, and home-country inheritance tax may apply either way; the US estate tax guide for non-residents covers treaties and the release process.
Can EU residents buy US-listed ETFs?
Generally not as retail clients, because US ETFs do not publish the key information document that EU rules require before a packaged product is sold to retail investors.
The PRIIPs regulation has applied since January 1, 2018, and France's market regulator, the AMF, has said that US packaged products without a key information document can no longer be marketed to retail investors, while those who already hold them may still sell. UCITS funds were given a transition period, and since January 1, 2023 they publish the same PRIIPs document, which is why Irish ETFs remain on sale across the EU.
Some brokers let clients opt up to professional status, which lifts the restriction. Under Annex II of MiFID II, the firm must check that the client meets at least two of three tests:
- an average of 10 significant transactions a quarter in the relevant market over the previous four quarters;
- a portfolio of financial instruments, including cash deposits, above €500,000;
- at least one year working in the financial sector in a role that requires knowledge of the products.
Opting up removes some investor protections as well, and the firm has to assess the request rather than grant it automatically. Rules in Switzerland and other European countries outside the EU differ, so check with the broker.
Accumulating or distributing: which share class fits?
US-listed ETFs pay out their income, while Irish funds offer both accumulating classes, which reinvest it, and distributing classes, which pay it out.
A US fund keeps its pass-through tax status only by distributing at least 90% of its investment company taxable income, so every holder receives quarterly payouts and suffers withholding on each one. Irish funds have no such rule. CSPX is accumulating: the dividends, after the 15% US tax inside the fund, are reinvested and show up in the share price. A distributing Irish class pays the same net dividends in cash.
Accumulating shares do not avoid the US tax; they change only when and how your home country taxes you. Some countries tax only what a fund pays out, so accumulation defers tax until you sell. Others tax a notional return each year whether or not anything is paid, and some treat accumulating and distributing classes differently in ways that can favor either. Your own country's rules decide, and the guide to reporting US investments at home covers the common ones.
How do costs, liquidity and trading hours compare?
US-listed ETFs are usually cheaper and more liquid, while Irish ETFs trade during European hours and in more currencies.
IVV had $870 billion of assets and a 30-day median bid-ask spread of 0.01% on October 30, 2026, and its fee is 0.03%. CSPX had about $154 billion in its main share class and charges 0.07%. State Street notes that on-screen liquidity for UCITS ETFs is split across several European exchanges and can look thinner than it is, because market makers can create shares against the same underlying stocks.
Three practical points often matter more than the fee:
- Currency of the listing. CSPX trades in dollars in London and Zurich, in euros on Xetra, Euronext Amsterdam and Borsa Italiana, and in pesos in Mexico and Colombia. Buying a listing in your own currency moves the conversion to the broker's rate, which may be better or worse than converting yourself; compare it on the currency converter.
- Trading hours. Irish listings trade while European exchanges are open, which suits investors in Europe, Africa and the Middle East; US listings trade in US hours.
- Swap-based funds. Some Irish ETFs track US indexes with swaps instead of holding the shares. Invesco explains that US rules exclude swaps on indexes with deep futures markets from dividend withholding, so the bank on the other side can pay the fund the index's gross return. The costs are a swap fee and exposure to those banks, which Invesco limits by holding a basket of other shares, using several counterparties and resetting the swaps regularly.
What are the risks of each structure?
Both are ordinary equity funds, so market risk dominates; the structural risks are tax-rule changes, estate exposure, counterparty risk in swap funds and currency.
- Market risk. Either fund can fall 30% or more in a bad year; the domicile changes taxes, not the index. Types of investment risk covers the wider list.
- Treaty and rule changes. The 15% rate depends on the Irish fund qualifying for the US-Ireland treaty, and your own country's treaty can be renegotiated or ended.
- Estate exposure. Holding US-listed ETFs above the US threshold leaves heirs with a US filing and a tax bill unless a treaty helps.
- Swap counterparties. A synthetic fund relies on banks to pay the index return; collateral reduces but does not remove that risk.
- Currency. Both funds hold dollar assets, whatever currency a listing trades in; a euro or peso listing does not hedge the dollar. See currency risk on US investments.
- Home-country tax. Some countries tax foreign funds more heavily than local ones, or tax accumulating funds each year; check before buying.
When does each structure come out ahead?
The Irish structure usually wins where your treaty rate is above 15% or estate tax matters, and the US structure where your rate is 15% or lower and fees dominate.
| Your situation | Usually comes out ahead | Why |
|---|---|---|
| No US income tax treaty, such as the UAE, Saudi Arabia, Singapore, Hong Kong or Brazil | Irish | 15% inside the fund against 30% on each US payout |
| Treaty rate of 25%, such as India or the Philippines | Irish | 15% against 25% |
| Treaty rate of 15% | Close, with US-listed slightly cheaper | Same withholding; the fee and spread decide |
| Treaty rate of 10%, such as Mexico, Japan or China | US-listed | 10% against 15%, plus the lower fee |
| EU resident without professional status | Irish | US-listed ETFs are generally not available |
| US holdings likely to exceed $60,000 at death | Irish, unless a treaty protects you | Irish shares are not US property |
Bond and T-bill funds follow different rules, because interest paid to non-residents is often exempt anyway; can foreigners buy US Treasury bills covers those. For anything beyond the US tax layer, the answer depends on how your own country taxes foreign funds.