Hi,
Please refer to guidance at:
USA: tax treaties
HMRC takes the view that for UK tax purposes LLCs should generally be regarded as taxable entities and not as fiscally transparent.
Accordingly, the UK taxes a UK member of an LLC by reference to distributions of profits made by the LLC and not by reference to the income of the LLC as it arises.
This means the income of the LLC will be taxed as a distribution, which is subject to income tax.
Please see guidance at:
SAIM5210
Guidance on registering for Self Assessment is available at:
Self Assessment tax returns
Thank you.