SB 1575 repeals and replaces section 143.341, RSMo, to change how Missouri taxes resident estates and trusts. The bill keeps the existing framework for determining Missouri taxable income for estates and trusts, including federal taxable income and specified state modifications, but adds new subtraction provisions beginning with tax years on or after January 1, 2026.
The most significant change is that resident estates and trusts would be allowed to subtract 100% of capital gains income included in federal adjusted gross income, subject to the limitation that the subtraction cannot affect federal distributable net income determinations. The bill also adds a separate subtraction for amounts included in Missouri taxable income that would not be included if the estate or trust were treated as a nonresident estate or trust, again beginning in 2026 and subject to the same federal DNI limitation.
Impact
This bill would reduce Missouri taxable income for resident estates and trusts by creating a full subtraction for capital gains and by adding a new subtraction tied to nonresident treatment for certain income items. As a result, it would likely lower state income tax liability for affected estates and trusts beginning in tax year 2026, while leaving the broader structure of Missouri fiduciary income tax calculations in place. The bill amends section 143.341, RSMo, and would affect estates, trusts, fiduciaries, and tax administrators.
Sentiment
Based on the bill text and caption, the measure appears to be a tax-cut or tax-relief proposal focused on capital gains, with no recorded committee debate or votes provided in the available context. The framing suggests a generally favorable policy intent toward reducing tax burdens on estates and trusts with capital gains income. Because there is no transcript or voting history, there is no documented opposition or support to assess beyond the bill’s substantive direction.
Contention
The main policy issue is the proposed full subtraction of capital gains income from Missouri taxable income for resident estates and trusts, which would reduce state revenue and could be viewed as a targeted tax preference. Another possible point of contention is the bill’s application only to estates and trusts, rather than to individual taxpayers generally, and the delayed effective date of 2026. No specific objections, supporters, or amendments are available in the provided materials.