Courtney -
For the benefit of those who read this thread and like you are puzzled, a Living Trust is commonly used (especially in CA) to avoid the paperwork on probate after death. All of the assets such as stocks, bonds and real estate you own are (on paper) transferred into the ownership of the Trust while you are still alive. This way you avoid having to get probate on death because the trustees/executors just have to get the trust paperwork sorted as against going through Court to get probate.
In practice, many Californians don't see the trust as separate from them because they keep getting monthly bank and brokerage statements. Typically both husband and wife are both beneficiaries of the trust and also are the trustees. In effect the trust is only a paperwork exercise done during lifetime by the attorney who drafts the Wills. This is all very sensible (and I know that I am picking on California here but Living Trusts are also used in other States too).
Now lets say husband and wife move to the UK for a 3 year assignment. For UK tax purposes they become resident here (although they remain domiciled in CA). If the Living Trust did not exist then all of the money invested in their brokerage account in the States would not be taxable in the UK unless the interest, dividends or capital gains were remitted here.
But because the Living Trust exists AND husband and wife are trustees and UK resident then the Trust becomes UK resident AUTOMATICALLY (this is based on UK trust law). Since last weeks UK Budget that means that there is a 20% entry charge on new money invested in the trust, an annual income tax charge on worldwide income of the Trust, a 6% 10-yearly charge and an exit charge when the trustees resign or become non-UK resident.
I know what I have written may be (or will be) way beyond most folk's interest, but the main message is if you have a US trust you MUST now take UK advice because of last week's UK Budget.
(Also do not confuse a Living Trust with a Living Will, which is quite different again...)