Mo. Rev. Stat. § 143.331 : TAXATION AND REVENUE — Income Tax —ESTATES, TRUSTS, AND BENEFICIARIES, RESIDENT — Resident estate or trust defined

A "resident estate or trust" means:

(1) The estate of a decedent who at his or her death was domiciled in this state;
(2) A trust that:
(a) Was created by will of a decedent who at his or her death was domiciled in this state; and
(b) Has at least one income beneficiary who, on the last day of the taxable year, was a resident of this state; or
(3) A trust that:
(a) Was created by, or consisting of property of, a person domiciled in this state on the date the trust or portion of the trust became irrevocable; and
(b) Has at least one income beneficiary who, on the last day of the taxable year, was a resident of this state.

§ 143.331, RSMo

L. 1972 S.B. 549, A.L. 2000 S.B. 896