[isatrader]

I've just started trading US stocks and the FX charges there are a bummer, but tbh there is no stamp duty so it balances out I guess. The UK stocks have been so flat for so long with false break outs. Its been very dull.

The question I have I guess is are US stocks in a UK stocks and shares ISA exempt from tax?

You normally have to sign a W8-BEN form in your account, which sorts out the US tax on any dividends you might get, and makes it 15% US withholding tax instead of 30%. And normally with most ISAs you won't be trading the physical US shares, but instead a proxy of them on LSE via a CREST Depository Interest (CDI), which only trades during the UK trading hours.