US ETF tax for UK residents
For UK investors the US taxes are the smaller problem. The bigger one is a UK rule: whether your fund has reporting status.
| US withholding on dividends from US-listed ETFs | 15% (treaty rate, with a W-8BEN) |
| US estate or gift tax treaty | Yes |
| Irish UCITS ETF, US dividends | 15% at fund level |
Dividends: 15%
With a W-8BEN on file, the US–UK treaty cuts withholding on US dividends to 15%. The US tax can usually be credited against UK dividend tax on the same income. In a stocks and shares ISA there is no UK tax to credit it against, so the 15% is lost.
Estate tax: the 1978 treaty
The US–UK estate and gift tax treaty is based on domicile. For someone domiciled in the UK who is not a US citizen, it generally leaves the US taxing rights only over US real estate and US business property, which keeps most US-listed shares and ETFs outside US estate tax. The UK charges its own inheritance tax instead. The treaty must be claimed on Form 706-NA, and the exact scope depends on your status. Read the treaty text or ask an adviser.
The UK rule that matters more: reporting fund status
HMRC taxes gains on offshore funds without UK reporting fund status as income, at up to 45%, instead of capital gains. Most US-listed ETFs don't have that status; most Irish UCITS ETFs sold to UK investors do. Check HMRC's list of reporting funds before buying.
Most UK platforms also don't offer US-listed ETFs to retail customers, because they don't provide the UK-required key information document. In practice, the UCITS version is what most UK investors hold.
Estimate your US estate tax
On $400,000 of US-situs assets. Above $60,000, so the estate must file Form 706-NA.
| Tentative tax on US-situs assets (§2001(c) rates) | $121,800 |
| Standard non-resident credit (§2102) | −$13,000 |
| Tax without treaty | $108,800 |
| Pro-rata treaty credit (illustration) | −$1,585,547 |
| Tax with pro-rata credit | $0 |
United Kingdom has an estate or gift tax treaty with the US. Several of these treaties grant a pro-rata share of the full US credit, as shown above, but the terms differ by treaty. Treat the treaty line as an illustration and check your treaty's text.
Compare a US ETF with its UCITS version
| US-domiciled ETF | Irish UCITS ETF | |
|---|---|---|
| Withholding on US dividends | 15% (treaty rate) | 15% (at fund level) |
| Yearly drag: withholding + fees | 0.225% | 0.265% |
| Value after 20 years | $371,015 | $368,245 |
| US estate tax exposure | Yes, above $60,000 | No |
Your treaty rate is 15%, no higher than the Irish fund's 15%, so on dividends alone the UCITS ETF has no edge. Estate tax can still matter: see the estate tax calculator.
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Rules last checked 2026-10-19. Sources in the methodology. Educational only, not tax advice.