You ask: is there no way to send a W-8BEN or equivalent to the IRS now?
My response: Yes, you can send one now, but it will not do anything for you and is redundent. The reason it is redundant is that the 1040-NR has a section for claiming tax treaty benefits.
The W-8BEN is a document that allows you to cliam tax treaty benefits befor withholding.
When you file the form 1040-NR you will claim tax treaty benefits on the last page, and if you are not nobligated for any tax according to the terms, then the IRS will refund it all. If you are entitled to a beneficial rate, then you will only have to pay the beneficial rate (genrally 15%), and you would be refunded the balance.
I understand, that the 1040NR is a complicated document.
YOU ASK: CAn I help or make a referrel tgo reliable partners.
My answer: I am unable by the rules on this site to contact you offsite or to have a client relationship with you. However, I can refer you to a couple of people with whom I am familiar with thier work.
1. This company is set up for U.S. expats, but can do the Non-resident return. http://www.visiontaxservice.net/
2. This is the Women's Venture Fund who has tax consultants who are competent at completing the 1040NR. [email protected].
Of course the big boys, that is PWC for example can do it also, but they are expensive. The two referrels I made will do the return for a modest price.