How to Invest in US Markets from Abroad
The US market is investable from nearly any country, but holding US-domiciled funds directly can be the costliest way to do it. Here's the structure most non-US investors actually want.
Don't have time? Here's what you need to know:
- 1You can own the US market from abroad through Irish-domiciled UCITS ETFs without ever holding a US-domiciled fund.
- 2An Irish UCITS fund pays 15% US dividend withholding at the fund level and avoids US estate-tax exposure on your holdings.
- 3Holding US-domiciled ETFs directly exposes non-residents to US estate tax above ~$60,000 at rates up to 40%.
- 4US citizens abroad are the exception: PFIC rules mean they should usually hold US-domiciled funds instead.
Two Ways to Own the US Market from Abroad
There is a difference between investing in the US market and buying US-domiciled funds, and conflating the two is the most expensive mistake non-US investors make. You can own the S&P 500, the Nasdaq-100, or the entire US stock market without ever holding a US-domiciled product. The underlying companies are American either way; the legal wrapper around them does not have to be.
Route one is buying US-domiciled ETFs directly, funds like VOO, VTI, or QQQ that are listed and registered in the United States. Route two is buying Irish-domiciled UCITS ETFs that track the same indices, listed on European exchanges. Both give you US equity exposure. The difference is entirely in tax treatment and estate exposure, and for most non-US investors route two wins.
Why the Fund's Domicile Decides Your Tax Bill
When a fund holds US stocks and receives dividends, the US levies withholding tax on those dividends before they reach the fund. An Irish-domiciled fund benefits from the US-Ireland tax treaty and pays only 15% withholding at the fund level, and crucially the fund itself is not subject to a second layer of US tax when it passes returns to you. By contrast, if you hold a US-domiciled ETF directly, the US withholds on the dividends paid to you, at 30% by default or 15% if your country has a treaty and you have filed a W-8BEN.
The bigger issue is estate tax. US-situs assets, which include US-domiciled ETFs and individual US shares, can expose a non-resident, non-US-citizen owner to US estate tax above roughly $60,000, at rates climbing toward 40%. An Irish-domiciled UCITS ETF is not a US-situs asset for these purposes, so it sidesteps that exposure even though it holds American companies. This single distinction is why the standard answer for a non-US investor is to buy the UCITS version, not the US one.
| Consideration | US-domiciled ETF (e.g. VOO) | Irish UCITS ETF (same index) |
|---|---|---|
| US dividend withholding | 30%, or 15% with treaty + W-8BEN | 15% at fund level via treaty |
| US estate tax exposure | Yes, above ~$60k US-situs | Generally not US-situs |
| Available to EU retail | No (PRIIPs/KID) | Yes |
| Who it suits | US citizens / residents | Most non-US investors |
Important: US citizens living abroad are the exception. They face PFIC rules that make non-US funds punishing to hold, so US citizens should usually own US-domiciled funds and rely on the large US estate-tax exemption that citizens receive.
The W-8BEN: A Form That Pays for Itself
If any part of your portfolio touches US-situs assets through a broker, the W-8BEN is the form that certifies your non-US status and unlocks the lower treaty withholding rate. Without it, the US defaults to withholding 30% of your US dividends; with it, residents of treaty countries typically drop to 15%. It costs nothing, takes minutes, and your broker prompts you for it at account opening. The only real risk is forgetting to renew it, which most brokers handle with a reminder.
Filing the W-8BEN does not change your estate-tax position, and it does not make a US-domiciled fund a good idea for a non-US investor. It simply ensures that whatever US exposure you do hold is taxed at the treaty rate rather than the punitive default. Think of it as table stakes, not a strategy.
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A Practical Setup for a Non-US Investor
The clean version looks like this. Open an account with a broker that serves your country and offers UCITS ETFs, such as Interactive Brokers or a reputable local platform. Buy an Irish-domiciled fund tracking the S&P 500 or, better for diversification, a global all-world UCITS ETF that includes the US at its natural ~60% weight alongside the rest of the world. File a W-8BEN for any incidental US-situs holdings. Then contribute regularly and leave it alone.
If you specifically want only the US market, an Irish-domiciled S&P 500 UCITS ETF gives you exactly that with treaty-rate withholding and no US estate exposure. If you want the whole world, a single all-world UCITS fund does the job in one ticker. Either way, you are investing in the US market without making yourself a US taxpayer or an estate-tax target.
Tip: If you cannot decide between US-only and global, a single all-world UCITS ETF already holds the US at roughly 60% and adds developed and emerging markets automatically, which is the more diversified default.
Frequently Asked Questions
Can I invest in the S&P 500 from outside the US?
Yes, easily. Most non-US investors do it through an Irish-domiciled UCITS ETF that tracks the S&P 500, which delivers the same exposure as a US fund but with treaty-rate dividend withholding and without US estate-tax exposure. You can also buy US-domiciled S&P 500 ETFs directly through some brokers, though that is usually less tax-efficient for a non-US person.
Will I pay US tax if I invest in US stocks from abroad?
You will face US withholding tax on dividends, reduced to a treaty rate (often 15%) if your country has a treaty and you file a W-8BEN. You may also face US estate tax on US-situs assets above roughly $60,000. Using an Irish-domiciled UCITS ETF keeps the withholding at the favorable 15% fund-level rate and generally avoids the estate-tax exposure entirely.
Why can't I just buy VOO if it's cheaper?
Two reasons. If you are an EU retail investor, regulation blocks you from buying US-domiciled ETFs at all. And even where you can buy them, holding US-situs assets directly exposes you to US estate tax above ~$60,000 at up to 40%, which can dwarf the tiny expense-ratio savings. The UCITS equivalent is usually the better net outcome for a non-US investor.
I am a US citizen living abroad. Does this advice apply to me?
No, the logic flips for you. US citizens are taxed by the US on worldwide income and face PFIC rules that make foreign-domiciled funds, including UCITS ETFs, extremely costly to hold and report. US citizens abroad should generally hold US-domiciled funds and lean on the multi-million-dollar estate-tax exemption that citizens receive. Get advice tailored to US-person status.
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Alex Harrington
CFA Level II Candidate, Finance & Economics
Alex Harrington is an independent ETF researcher and personal finance writer with over 8 years of experience analyzing exchange-traded funds. A CFA Level II candidate with a background in economics, Alex has reviewed 800+ ETFs and helped thousands of beginners build their first investment portfolios through clear, jargon-free education.
This content is for educational purposes only and does not constitute financial advice. Past performance does not guarantee future results. Consult a licensed financial advisor before making investment decisions.