Hello,
Glad to join you all! I hope you all had a wonderful holidays.
Came here for help. Have a few questions.
I am from tax treaty country and I pay 10% tax to USA for my royalties I earn from my photos. Recently I have started to earn a lot of and I see that I don't have any benefits in my country from this kind of business. So I am wondering:
1) maybe there are some benefits in USA? It sounds strange but I work in USA, I earn thousands $, pay taxes and get nothing, only because physically I am here(in my country)?
2) is it possible to get back those 10%? I mean how about tax return?
3) what is ITIN number or SSC number can I get them and what are the benefits of having it?
4) I buy a lot of expensive equipment but my country doesn't include this in my tax deduction forms, because 1-  the name of my income is ROYALTY 2 - I work in USA and have to fill all tax deduction forms in USA. Can I? What forms? Where?
5) I am getting older and older I start to think about retirement, how much will the government of USA pay me in retirement? Will they pay me at all?
Sorry for my English.
Any help and advice will be very much appreciated.

Or CRS - Canada Revenue Service - if you are in Canada.

I've always wondered why they call it a 'service' when it is anything but. Another one of life's imponderables.