Almost all countries tax foreign income of residents. In your example you would be taxed on gains beyond the initial amount in all countries that aren&#x27;t considered to be tax havens.<p>(The non-domiciled rule in the UK being one notable exception)<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;International_taxation" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;International_taxation</a>