Earlier quoted context omitted.
Interesting! I stand corrected. Next thing I don't understand with that document is what is "earned" income. Are app store sales "earned?" I'd say so... constantly having to update the software -- I'm earning it.
Your profits resulting from sales on the App Store (less such expenses as are reasonable and necessary to achieve that income) are, unquestionably, earned income resulting from your personal contribution to a business. http://www.irs.gov/Individuals/What-is-Earned-Income Most forms of "unearned income" are where you're getting compensated primarily for capital rather than labor. For example, if you were to sell the b…
Last piece of the puzzle is the tax home. I travel from country to country about every 3 months. Do I even have a tax home?