If I become a citizen of the United States and then decide to live in a foreign country, must I pay any form of taxes to the United States Government.
First scenario assume that all my income would be generated in the foreign country.
Second scenario assumes that some or all my income would be generated in the US while staying in a foreign country.
Third Scenario assume that my income is made from anywhere but I hold some bank accounts, investment accounts, 401k, IRA's in the USA.
I've lived overseas in the past, and my understanding (albeit this was some ten years ago) is this:
If you're a US citizen, you must pay taxes to the U.S. on any income, earned in the U.S. or outside it. This definitely applies to "earned income", whether earned in the U.S. or outside it. I think it probably applies to capital gains but I'm less sure.
If the foreign country has a taxation rate lower than that of the U.S., you pay the difference between the two; you can deduct foreign taxes paid from the amount you'd owe.
However, if the taxation rate of the foreign country exceeds the rate of the U.S., you don't owe anything to the U.S.
This is a very basic understanding, but for specifics you really need to ask the IRS. No answer you get here will be authoritative.
As a US citizen, you'll have to a file a tax return on your worldwide income, no matter where you live. You'll also have to pay taxes to the IRS on that income, but there are various exemptions and foreign tax credits that come into play, so basically the IRS takes into account taxes paid abroad on income generated abroad.
This is a subject that really requires input from a qualified professional.
