The answer depends on what type of Special Needs Trust – a Third Party Special Needs Trust or a First Party Trust.
A third party trust, that is created to hold assets of another person for the benefit of the person with special needs, can be set up by anyone who is over the age of 18 and has the mental capacity to create such a trust. Typically, a parent or grandparent sets up a third party trust because they are usually the ones who are leaving assets to the person with special needs. However, with older couples, sometimes one spouse sets one up for the surviving spouse. In addition, a friend or other nonrelative may set up a third party special needs trust to be the recipient of gifts from other friends of the person with special needs.
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