There has been a discussion over here.
For instance, if you were with Interactive Investor, you would be exposed to these rates:
With Freetrade, at least you do not need to invest £100,000 to get 0.5%, you get that with £1. And it has also been mentioned that Freetrade intends to come up with further FX reductions (whether for all or for Alpha users - no idea), but that is not in the short term.
After all, one day they could also implement a USD denominated storage within your account which could sole FX issues altogether.
In terms of this, it would essentially be a 0.5% commission on non-UK transactions. If you invest £100 into the US security, then sell it, assuming no fees and no growth/loss, you will end up with just over £99 (£99.0025 to be precise).
Exactly right. For now.
Also,my favourite