I suspect even the places with 0% tax on gains, you're required to report the income. That said: The places with 0% gains are generally low population, as an i

I suspect even the places with 0% tax on gains, you're required to report the income. That said: The places with 0% gains are generally low population, as an individual you don't get to choose where to report taxes - you report taxes wherever you are resident. Getting to avoid taxes remains a privilege for corporations and those rich enough to justify exciting trust games.