I want to add a UK-specific viewpoint for anyone with a British business who&#x27;s wondering if a US entity is a necessity for dealing with US corporations.<p>I run a service-oriented business with 10 employees in the UK and most of our income is from US-based corporations. Externally we work entirely in USD. Once we determined our tax and legal positions, we&#x27;ve not encountered any problems with payments, wires, forms (W-8BENI is accepted in place of W-9s), or taxes, and our customer roster is a couple hundred tech companies - ranging from F500s with arcane vendor account requirements, through to mid range companies, startups, and small ISVs.<p>Trade between the UK and US is common and, depending on what you are trading, has a low amount of friction due to the UK&#x27;s relatively open nature and low level of bureaucracy on matters of banking, international trade and taxation.<p>(If you sell physical items, need to take on US-based staff, start a US office, are a low margin business that couldn&#x27;t take exposure to exchange rates or cross-border tax volatility, or need to appeal to US investors, disregard the above and get a US entity! :-))