A trust deed is the legal document that creates a trust and sets out its rules: who the trustee is, who can benefit, what powers everyone holds, and what the trustee may and may not do with the assets. It is the constitution of the trust. Courts, banks, and tax authorities all start with the deed when any question about the trust arises.
One disambiguation up front, because the term does double duty. In US real estate, a "deed of trust" is a mortgage-like security instrument, and in Scotland a "trust deed" is a formal debt arrangement. This entry covers the wealth-structuring meaning: the instrument that establishes a private trust.
A well-drafted deed typically contains the declaration of trust, the definitions of beneficiaries (often a class, such as "the settlor's children and remoter issue," rather than named individuals), the trustee's powers of investment and distribution, provisions for appointing and removing trustees, and administrative machinery such as the governing law clause. In offshore deeds, a few clauses do heavy lifting: the governing law election (which decides whether Cook Islands, Jersey, or Cayman rules apply), spendthrift language, duress provisions instructing the trustee to ignore orders the settlor gives under court compulsion, and any reserved powers the settlor keeps.
Two documents usually sit alongside the deed. The letter of wishes guides the trustee's discretion without binding it. And in jurisdictions like the BVI, statutory overlays such as VISTA modify what the deed can do with company shares. The deed itself is private in every offshore jurisdiction covered in our guides; nothing about it appears on a public register.
Related terms: settlor, letter of wishes, discretionary trust.