HB 594 Missouri House · 2025 Regular Session

Relating to taxation

HB 594 replaces Missouri's tax calculation rules for individual income tax by adding specific items back to federal adjusted gross income. It directly affects Missouri residents filing state income tax returns by increasing taxable income for certain deductions, such as federal tax refunds related to pandemic credits (excluding specific pandemic relief), interest on certain government bonds, and business deductions like accelerated depreciation. The bill also modifies how net operating loss carryforwards and out-of-state property taxes are treated in state tax calculations. These changes adjust Missouri's taxable income upward for affected taxpayers without altering the state's tax rates.

Issues: ✗ Budget & Taxes

Bill status passed both 4 of 5 stages cleared

Introduction

Dec 2024

Committee Review

May 2025

House Passage

May 2025

Senate Passage

Apr 2025

Governor

Introduced Dec 17, 2024 Last action May 30, 2025

Maddy AI version diff · 3 comparisons

What changed between versions

Perfected → Senate Substitute (Senate Floor Substitute) · 5 edits

MODERATE

The bill changed from a single income tax deduction provision to a comprehensive tax reform package that repeals multiple existing tax sections and replaces them with new provisions. The most significant change is the addition of a new county sales tax authorization that requires voter approval before implementation.

Scope change

The bill's scope expanded from a single income tax deduction to a broader tax reform affecting multiple tax sections including sales, income, and property taxes.

SCOPE

Added new county sales tax provisions allowing counties to impose additional sales taxes with voter approval, including specific rate limits and usage restrictions.

Removed the original single income tax deduction provision for capital gains that was the focus of the original House Committee Substitute.

Expanded the list of repealed tax sections from one section (143.121) to fifteen sections covering various tax areas.

TIMELINE

Added new date thresholds for sales tax rate limits, including restrictions beginning August 28, 2017, and new provisions effective August 28, 2025.

REQUIREMENT

Added voter referendum requirements for county sales tax implementation, including specific ballot language and restrictions on how frequently taxes can be proposed.

Floor votes

How they voted

This bill passed the Senate by voice vote (no roll call recorded).

Full legislative history

Actions timeline

Total actions

Key actions

Committee

May 7, 2025

Lower · Passed

Truly Agreed To and Finally Passed - AYES: 102 NOES: 41 PRESENT: 10

lower

May 7, 2025

Lower · Passed

Reported Do Pass (H) - AYES: 6 NOES: 2 PRESENT: 0

lower

Apr 10, 2025

Lower · Passed

Voted Do Pass (H)

lower

Apr 7, 2025

Committee

Referred: Fiscal Review(H)

lower

Apr 7, 2025

Upper · Passed

Third Read and Passed (S) - AYES: 27 NOES: 6 PRESENT: 0

upper

Apr 7, 2025

Upper · Passed

Reported Do Pass (S)

upper

Apr 7, 2025

Upper · Passed

Voted Do Pass (S)

upper

Apr 3, 2025

Lower · Passed

Executive Session Scheduled - Monday, April 7, 2025, 3:15 p.m., Senate Committee Room 2 - 1st Floor

lower

Apr 2, 2025

Committee

Referred: Fiscal Oversight(S)

upper

Apr 2, 2025

Upper · Passed

SS#2 Adopted (S)

upper

Apr 1, 2025

Introduced

SS#2 Offered (S)

upper

Apr 1, 2025

Introduced

SS Offered

lower

Mar 10, 2025

Upper · Passed

Reported Do Pass (S)

upper

Mar 10, 2025

Upper · Passed

Voted Do Pass (S)

upper

Mar 7, 2025

Lower · Passed

Executive Session Scheduled - Monday, March 10, 2025, 3:30 p.m., Senate Committee Room 2.

lower

Feb 27, 2025

Lower · Passed

Executive Session Scheduled - Monday, March 3, 2025, 3:30 p.m., Senate Committee Room 1.

lower

Feb 27, 2025

Committee

Referred: Fiscal Oversight(S)

upper

Feb 27, 2025

Upper · Passed

Reported Do Pass (S)

upper

Feb 25, 2025

Upper · Passed

Voted Do Pass (S)

upper

Feb 20, 2025

Committee

Second read and referred: General Laws(S)

upper

Feb 13, 2025

Lower · Passed

Third Read and Passed (H) - AYES: 100 NOES: 48 PRESENT: 1

lower

Feb 13, 2025

Lower · Passed

Reported Do Pass (H) - AYES: 3 NOES: 2 PRESENT: 0

lower

Feb 13, 2025

Lower · Passed

Voted Do Pass (H)

lower

Feb 11, 2025

Committee

Referred: Fiscal Review(H)

lower

Feb 11, 2025

Lower · Passed

HCS Adopted (H)

lower

Feb 6, 2025

Lower · Passed

Reported Do Pass (H) - AYES: 6 NOES: 3 PRESENT: 0

lower

Feb 6, 2025

Lower · Passed

Voted Do Pass (H)

lower

Jan 30, 2025

Committee

Referred: Rules - Administrative(H)

lower

Jan 29, 2025

Lower · Passed

HCS Reported Do Pass (H) - AYES: 6 NOES: 3 PRESENT: 0

lower

Jan 29, 2025

Lower · Passed

HCS Voted Do Pass (H)

lower

Jan 21, 2025

Committee

Referred: Commerce(H)

lower

Dec 17, 2024

Introduced

Prefiled (H)

lower

1 primary · 8 co-sponsors