Can one be non-resident alien in the US without being a resident anywhere else?
"You'll need to read carefully the German laws on tax residency, in many European (and other) tax laws the loss of residency due to absence is conditioned on acquiring residency elsewhere. But in general, it is possible to use treaties and statuses so that you end up not being resident anywhere, but it doesn't mean that the income is no longer taxed. Generally every country taxes income sourced to it unless an exclusion applies, so if you can no longer apply the treaty due to not being a resident - you'll need to look for general exclusions in the tax law. I don't know how Germany taxes scholarships under the general rules, you'll have to check it. It is possible that they're not taxed. Many people try to raise the argument of ""I'm not a resident"" to avoid income taxes altogether on earnings on their work - this would not work. But with a special kind of income like scholarship, which may be exempt under the law, it may. Keep in mind, that the treaty has ""who is or was immediately before visiting a Contracting State a resident of the other Contracting State"" language in some relevant cases, so you may still apply it in the US even if no longer resident in Germany." "You may be considered a resident for tax purposes. To meet the substantial presence test, you must have been physically present in the United States on at least: 31 days during the current year, and       183 days during the 3 year period that includes the current year and the 2 years immediately before. To satisfy the 183 days requirement, count:           All of the days you were present in the current year, and           One-third of the days you were present in the first year before the current year, and           One-sixth of the days you were present in the second year before the current year. If you are exempt, I'd check that ending your residence in Germany doesn't violate terms of the visa, in which case you'd lose your exempt status. If you are certain that you can maintain your exempt status, then the income would definitively not be taxed by the US as it is not effectively connected income: You are considered to be engaged in a trade or business in the United States if you are temporarily present in the United States as a nonimmigrant on an ""F,"" ""J,"" ""M,"" or ""Q"" visa. The taxable part of any U.S. source scholarship or fellowship grant received by a nonimmigrant in ""F,"" ""J,"" ""M,"" or ""Q"" status is treated as effectively connected with a trade or business in the United States. and your scholarship is sourced from outside the US: Generally, the source of scholarships, fellowship grants, grants, prizes, and awards is the residence of the payer regardless of who actually disburses the funds. I would look into this from a German perspective. If they have a rule similiar to the US for scholarships, then you will still be counted as a resident there." If you aren't a US National (citizen or Green Card holder or some other exception I know not of), you're an alien, no matter where else you may or may not be a citizen. If you don't meet the residency tests, you're nonresident.  Simple as that.
"It depends on the rules in the specific places you stay.  Specific places being countries or states.   Some states may consider pension payments to be taxable income, others may not.  Some may consider presence for X days to constitute residency, X days may be 60 days in a calendar year whether or not those days are continuous.   It doesn't matter so much where your mailbox or mail handling service is located, it matters: You may owe taxes in more than one place.  Some states will allow you to offset other states' taxes against theirs.  Some states in the US are really harsh on income taxes.  It's my understanding that if you own real estate in New York, all of your income, no matter the source, is taxable income in New York whether or not you were ever in the state that year. Ultimately, you can't just put up your hand and say, ""that's my tax domicile so I'm exempt from all your taxes.""  There is no umbrella US regulation on this topic, the states determine who they consider to be residents and how those residents are to be taxed. While it's possible you may be considered a resident of multiple states and owe income taxes in multiple states, it's equally possible that you won't meet the residency criteria for any state regardless of whether or not that state has an income tax.  The issue you face, as addressed in @Jay's answer, Oklahoma will consider you a resident of OK until you have established residency somewhere else." "As you said, in the US LLC is (usually, unless you elect otherwise) not a separate tax entity. As such, the question ""Does a US LLC owned by a non-resident alien have to pay US taxes"" has no meaning. A US LLC, regardless of who owns it, doesn't pay US income taxes. States are different. Some States do tax LLCs (for example, California), so if you intend to operate in such a State - you need to verify that the extra tax the LLC would pay on top of your personal tax is worth it for you. As I mentioned in the comment, you need to check your decision making very carefully. LLC you create in the US may or may not be recognized as a separate legal/tax entity in your home country. So while you neither gain nor lose anything in the US (since the LLC is transparent tax wise), you may get hit by extra taxes at home if they see the LLC as a non-transparent corporate entity. Also, keep in mind that the liability protection by the LLC usually doesn't cover your own misdeeds. So if you sell products of your own work, the LLC may end up being completely worthless and will only add complexity to your business. I suggest you check all these with a reputable attorney. Not one whose business is to set up LLCs, these are going to tell you anything you want to hear as long as you hire them to do their thing. Talk to one who will not benefit from your decision either way and can provide an unbiased advice." Good question - I know you can keep the ISA in the UK and it won't lose its tax free status but you're not able to contribute it while you're not a UK resident. Not that its tax free status buys you that much if you're a non-resident as you could apply to receive tax gross on pretty much any savings account anyway. Given that the idea of tax-free saving outside a retirement account doesn't really exist here in the US I would assume that you will have to declare the interest as income and, if you don't pay any other taxes in the UK that would cover the amount you'd have to pay on your ISA under the foreign tax credit, you'd end up giving the IRS their pound of flesh. As I mentioned in an answer to a previous question, you really need to talk to an US accountant/CPA, preferably one that is familiar with UK taxation law as well. He cannot get money from someone else account. Your US resident friend in New York can send money to your Indian friend in Atlanta via Western Union which has presence in almost every corner of the US. Most definitely in the city of Atlanta. Your Indian friend can receive the Western Union transfer, in cash, within minutes after the friend in New York sends it. Here's the site for location search. The sender doesn't need to go anywhere, can send online, so your New York friend doesn't even need to waste much time. In fact - you don't need to bother your friend in New York, you can send it online yourself (assuming you're American/have US bank account). In order to receive the money, your Indian friend will obviously need a proper identification (i.e.: passport). "From what you've described, your spouse is a non-resident alien for US tax purposes. You have two choices: Use the Nonresident Spouse Treated As Resident election and file as Married Filing Jointly. Since your spouse doesn't have, and doesn't currently qualify for, an SSN, he/she will need to apply for an ITIN together with the tax filing. Note that by becoming a resident alien, your spouse's worldwide income the whole year would be subject to US taxes, and would need to be reported on your joint tax filing, though he/she will be able to use the Foreign Earned Income Exclusion to exclude $100k of her foreign earned income, since he/she will have been out of the US for 330 days in a 12-month period. Or, file as Married Filing Separately. You write ""NRA"" for your spouse's SSN on your tax return. As a nonresident alien, if your spouse doesn't have any US income, he/she doesn't have to file a US tax return, and doesn't need to apply for an ITIN. Which one is better is up to you to figure out." To build a US credit record, you need a Social Security Number (SSN), which is now not available for most non-residents.   An alternative is an ITIN number, which is now available to non-residents only if they have US income giving a reason to file a US tax return (do you really want to get into all that...). Assuming you did have a reason to get a ITIN (one reason would be if you sold some ebooks via Amazon US, and need a withholding refund under the tax treaty), then recent reports on Flyertalk give mixed results on whether it's possible to get a credit card with an ITIN, and whether that would build a credit record.  It does sound possible in some cases.   A credit record in any other country would not help.  You would certainly need a US address, and banks are increasingly asking for a physical address, rather than just a mailbox. Regardless, building this history would be of limited benefit to you if you later became a US resident, at that point you would be eligible for a new SSN (different from the ITIN) and have to largely start again. If getting a card is the aim, rather than the credit record, you may find some banks that will offer a secured card (or a debit card), to non-residents, especially in areas with lots of Canadian visitors (border, Florida, Arizona).  You'd find it a lot easier with a US address though, and you'd need to shop around a lot of banks in person until you find one with the right rules.  Most will simply avoid anyone without an SSN. You can open an account in US without having SSN. You need to be physically present to open the account. "The answer is, unfortunately, along the lines of ""it depends"". It does depend a little on the bank - I've had a US bank account for years before moving to the US, and I didn't have an SSN or any status when I opened the account. What I did have however was an address in the US that they could send the statements to, and proof that I was living abroad (oh, and US citizen wife that had an account with the same bank). Not all banks will open a bank account for a foreigner with no status in the US, but it is generally possible. You will have to check with several banks and basically have paperwork showing your foreign address and proof of id (passport, possibly a drivers license as well)."