[clamprecht]

That's why I asked about Puerto Rico. Puerto Rico is a territory of the US, so it isn't considered "overseas". If you google it, you'll see what I'm talking about. Here's a link: http://www.marketwatch.com/story/puerto-rico-woos-rich-with-...

[scrumper]

I did Google it, and I found this http://premieroffshore.com/move-puerto-rico-pay-zero-capital...

Which seems to support your idea! "Capital gains are sourced to your place of residence."

Any dividend income would be taxable, since you have to file an IRS return for all ex-PR income, but it looks like not the CG.

Quite a loophole - thanks for prompting the research.

EDIT: There are some quite long-term residency requirements to avoid CG on things you owned before moving to PR though. I don't think it'd work in the year timeframe you asked about.