I am an EU resident interested in becoming an independent contractor for a US based client. My client and I have reached an agreement regarding compensation, and are now looking for a legal setup for our collaboration that works for both parties.
For some reason that is unclear to me at the moment, they are not able to pay international invoices and are requesting that I have some form of legal entity in the US (a single member LLC was suggested). While setting up an LLC is possible (through Stripe Atlas or other similar services) it seems to me that it would complicate my tax situation unnecessarily.
I have previously lived and worked in the US and have a Social Security Number. Would I be able to operate as a sole proprietor using my SSN even as a non-resident? Would I need to pay any taxes in the US by operating this way?