You need to find the DTA between
Thailand and Ireland/UK.
Good questions.....
Correction, under a Single Member LLC (SMLLC) you are still subject to the Estate Tax.
Under a Multi Member LLC (MM LLC) you are not subject to the Estate tax as the MMLLC has two or more members.
Some people are going the extra mile by having a MMLLC owned by a foreign Corporation, such as a Panamanian company, a foreign company cannot die.
I only have a MMLLC, and my CPA tells me that's enough to get rid of the Estate Tax.
By having the account under an LLC or a MMLLC you are NOT subject to Capital gains Tax, or any type of Tax in the U.S. as the LLC is a passthrough entity. So you would have to pay taxes in your country of residency (if your country of residency has those taxes, if not, everything you make is tax-free.)
You are still subject to the withholding tax on
dividends received, and that is based on the DTA between the U.S. and your country of residency.
Hope that helps.