The civic record
Read. Follow. Verify.Missouri Senate Bill 1237 Imposes 4% Flat Income Tax and Eliminates Federal Tax Deduction Starting in 2027
Last action · January 27, 2026: Second Read and Referred S Economic and Workforce Development CommitteeSponsor: Nick Schroer
Track this bill to get notified when it advances a stage. One tap to stop, anytime.
What This Bill Would Do
Beginning January 1, 2027, Missouri will replace its graduated income tax with a flat 4% tax rate and eliminate the individual and corporate income tax deduction for federal income taxes paid. The bill also establishes a mechanism for future rate reductions starting in 2028 if net general revenue collections meet specific growth thresholds.
Who It Would Affect
Groups the bill's text would affect if enacted, as described in the record. Being affected is not a position for or against it.
individual taxpayers
corporate taxpayers
Key Facts
You don't have to trust us. Each fact below is taken straight from the official document - click any one to see the exact passage, highlighted in the original.
Frequently Asked Questions
When does the flat 4% income tax take effect?
What happens to the federal income tax deduction under this bill?
What else do you want to know?
News Coverage
Follow the record
Votes, people, money & the original sourceWhere This Stands
Currently in committee. The next step in the legislative lifecycle is Floor Vote.
Procedural history
3 actions- Jan 27, 2026SenateFloorSecond Read and Referred S Economic and Workforce Development Committee
- Jan 7, 2026SenateIntroducedS First Read
- Dec 1, 2025SenatePrefiled
Version history
Only one version on file - nothing to compare yet. The text on record is the 5471S.01I - Introduced version. As later stages (committee substitute, engrossed, enrolled) are captured, the redline appears here.
View official text →Lobbying Activity
No state lobbying filings in our records match this bill. Federal lobbying reports (LDA) cover Congress, so they are not listed on state bills.
Full breakdown
Who this bill affects and the strongest case for and against it, written only from the bill’s own text.
Sponsors
Discoveries
Patterns POLISCOPE noticed across the record. These are observations to investigate, not conclusions.
Transition to Flat Income Tax and Removal of Deductions
The legislation marks a major shift from a graduated income tax structure with federal tax deductions to a flat 4% rate with zero federal deductions.
Connected Entities
Sources
www.senate.mo.gov
Analysis Score
0–100- Significance85How much this matters to a regular citizen
- Controversy75Intensity of disagreement among stakeholders
- Entertainment10Compellingness for a non-policy-wonk reader
- Buzz60Current news / social attention level
Publisher tools