D.C. Code § 19-1305.02: Spendthrift provision.

(a)

A spendthrift provision is valid only if it restrains both voluntary and involuntary transfer of a beneficiary’s interest.

(b)

A term of a trust providing that the interest of a beneficiary is held subject to a “spendthrift trust,” or words of similar import, is sufficient to restrain both voluntary and involuntary transfer of the beneficiary’s interest.

(c)

A beneficiary may not transfer an interest in a trust in violation of a valid spendthrift provision and, except as otherwise provided in this subchapter, a creditor or assignee of the beneficiary may not reach the interest or a distribution by the trustee before its receipt by the beneficiary.