Montana Code Annotated · § 72-38-407 — Statute of frauds

A trust is not valid unless evidenced by one of the following methods:

(1) by a written instrument signed by the trustee or by the trustee's agent if authorized in writing to do so;

(2) by a written instrument signed by the settlor or by the settlor's agent if authorized in writing to do so; or

(3) by operation of law.