Do I have to file at home while living in United States?
For most people the answer turns on whether the ties that made them resident have actually ended. For a US citizen or green-card holder it does not: the return is due in United States exactly as it would be at home. Everything else on the file follows from which of those you are.
Is there a treaty between my country and United States?
Treaty networks change with each protocol and each multilateral-instrument position, so we confirm the treaty in force for your specific year with the issuing authority rather than relying on a published summary. Where there is none, unilateral relief and domestic law do the work instead.
I own property in United States. Where is the rent taxed?
In United States, because that is where the property sits. The complication is the base: gross-rent withholding takes no account of mortgage interest, tax or repairs, so a leveraged property can face tax on turnover. An election onto net profit, where it exists, is what fixes that — and it has its own timing.
Does working remotely from the US for a foreign employer create a US filing obligation?
It can — someone physically performing work in the US is generally within US taxing jurisdiction on that income regardless of who employs them or where the employer is based, so a remote worker genuinely present in the US needs their US filing position reviewed on that basis.
Does the specific US state someone works remotely from matter separately from the federal position?
Yes — state rules apply their own residency and sourcing tests independent of the federal treaty network, so a remote worker's specific state also needs its own review, and different states can produce quite different outcomes for what looks like the same remote-work arrangement.
Does a foreign employer need to register for US payroll withholding for a remote employee working from there?
Depending on the employee's presence and activity in the US, a foreign employer can face US payroll withholding obligations once an employee is genuinely working from US soil, which is a question the employer needs to address rather than assuming the employee's personal filing covers everything.
Where do I report foreign tax paid on Form 1040?
Not directly. Foreign tax withheld shows up first on the payer statement — a 1099-DIV, 1099-INT or K-1 — and from there goes onto Form 1116, which computes the allowable credit by category. The credit then lands on Schedule 3 and flows to the 1040. Under the small-amount election it can go straight to Schedule 3 without the form, which is quicker and forfeits the carryover. See Form 1116.
Is there an exit tax when a green card holder leaves the United States?
Only for long-term residents — those who held the green card for long enough to be inside the expatriation regime — and then only if one of the covered expatriate tests is met. The step people skip is the formal one: the status has to be properly ended for tax purposes, and until it is, worldwide filing continues no matter where you live. Abandoning the card and forgetting the tax filing is the common, expensive sequence. See giving up a green card.