you become non-dom in the UK. I hold an EU passport; not tax resident in that country. I am however a tax resident in another Asian country.
The funds come to your US fintech bank account. Where you move it to can be a tax liability. Many move it to their revolut/wise account. You can also make the bigger payments from your US account.
how I understood it, is that if you’re a foreigner and not located in the US (residency) it’s a tax free system. Setting mine up next month - already paid the consultancy fee for the 30 min chat.