I am a US citizen, and I have a business—a publishing company I started to publish my own books, which are all done digitally or POD, so there is no need of physical premises as everything happens online.

Although I registered the company in Seattle while I was there, I don't live there and don't get mail there. I have no fixed address and spend most of my time abroad. My income at the moment is so low that I can't even afford any kind of PO box.

The question is: what should I put on my tax form for an address? I just saw elsewhere that I might be unable to claim travel expenses if I put 'no fixed address'. Is that true?

I could put a friend's address in India, but it's not someplace I stay. If I am to put an address, I think it should be in India, as that's where I live most of the time. Or would it be better to use my friend's address in Seattle (the one that's on my driver's license and business registration? I don't think I would owe any state taxes anyway as my income is really low.

I wouldn't be getting a refund, so that's not an issue. I just want to avoid getting anything flagged or annoying the IRS in any way.

Thanks for your help!