If you are resident in the UK and control a US company, HMRC need to be told about it.  <a href="https:&#x2F;&#x2F;www.gov.uk&#x2F;guidance&#x2F;controlled-foreign-company-an-overview" rel="nofollow">https:&#x2F;&#x2F;www.gov.uk&#x2F;guidance&#x2F;controlled-foreign-company-an-ov...</a><p>The US company will pay 20% UK Corporation Tax on (worldwide) profits and need to fill out CT600 each year.<p>You will probably be able to pay lower taxes in the US as a result of double taxation treaties, but it&#x27;s going to be a very tedious task to organise.