I looked into this a while back. If you get hired for a job the fee is nominal. If you move there with permanent resident status you can't work at a "job" for at least 2 years. If you are planning to trade your own account this should not be a problem because you will simply be "managing your investments" and not working. Permanent residency status costs $18,500 and requires an investment "in the Island" of $175,000 which basically means buying real estate but might be able to be satisfied by buying stock in a Cayman Islands publicly traded company. I don't remember whether these figures are in USDs or Cayman Islands dollars (exchange rate is $1 CI to $.82 US--I think). Either method of moving there will get you the US tax exemption for living offshore but neither will completely get you out of paying US taxes. To get out of US taxes you need to change your citizenship (St. Kitts/Nevis will sell you citizenship for about $50,000 and you have to spend $250,000 on real estate but there is no residency requirement so you could still live in the Caymans).