Morally speaking, there are two principles at play.

The first is paying your fair share of taxes for enabling the system of rule of law, financial protection, courts, stability provided by national defense, etc. that help you earn that money in the first place. This argues for paying taxes in the country where the money is earned.

The second is the principle of progressive taxation that funds the entire social system where you live -- roads, schools, parks, police, health care, retirement. The richer you are, the higher the rate you can and should give back. Thus it doesn't matter whether you make your money at home or abroad -- it counts toward the taxes you're morally obligated to pay for where you reside and/or are a citizen of.

Because these conflict, the US allows for Americans to let taxes paid abroad count against their US taxes, so they're not double-taxed. Which is one form of a reasonable compromise. There are many other forms you could imagine.

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bluecalm 5 hours ago | parent [-]

I lived in country A - normal apartment, I went to a really shitty school, got bullied there, didn't finish university. I had to pay out of pocket for healthcare as public option sucks and didn't want to help me. I made my money selling my software to people abroad. How is it in any way fair that I pay all my taxes in country A instead of to all the countries that really made it possible for me to earn money?

>>Thus it doesn't matter whether you make your money at home or abroad -- it counts toward the taxes you're morally obligated to pay for where you reside and/or are a citizen of.

What about all other countries that were stable and nice enough and allowed me to make money? Why should I be "morally obliged" to pay taxes in a country I didn't choose, that was shitty to me and didn't help me much if at all? I used very little resources there (now I finally moved). It would feel even more unfair if they followed me abroad and required even more taxes.

>>There are many other forms you could imagine.

Yeah, like paying proportionally (or progressively) for resources you use in a country or for business you do in that country. It seems really unfair that my country gets all my taxes for providing very little to me while all other countries that gave me business opportunities got close to nothing (some VAT in EU countries but that's it).

	▲	crazygringo 5 hours ago \| parent \| next [-]
		> It seems really unfair that my country gets all my taxes for providing very little to me Do you not get police and fire protection? Health care? Rule of law? Urban and rural infrastructure? National defense? Some level of education? Courts that enforce property protection? And so forth? We often don't see all the benefits our government provides because we take it for granted. But if you ever go visit somewhere where you need to hire bodyguards so that you're not kidnapped while driving, security forces around your compound to prevent it from being looted, and pay constant protection money to the local crime boss so he specifically doesn't kill you and take your stuff... you might realize your taxes pay for a whole lot more than you think. Obviously every country can do more. But in a democracy that's why we try to vote in candidates who will improve things. And you can always try to move to a better country, if they'll let you. But that's up to them. (If you live in a dictatorship, then obviously you have more reason to be able to complain since you don't have any legal ability to work for change from within the system.)
	▲	ghusto 5 hours ago \| parent \| prev [-]
		> (now I finally moved) There's your answer. I was in exactly the same position (felt what the country had to offer me was piss-poor, so I left). Whilst I lived in that country however, _I paid taxes_. A country has costs, just like a household. There's the obvious things like police and other civil servants, but there are also countless invisible costs that go to holding a country together. To say "well I didn't choose to be here anyway" is childish.