An a person without a US citizenship, do I always pay a capital gains tax according to the laws of the country I made the gains in?

External question — Personal Finance Stack Exchange Author: john goodheart Original post: https://money.stackexchange.com/questions/157288 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I lived in Germany my whole life. I don't have a US citizenship. I invested in S&P 500 via the American "Interactive Brokers" for the last 4 years. Now I want to move to New Zealand. I want to understand if I can sell my stocks there, will I need to pay the German CGT on them? Will I need to to pay any other tax when moving?