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Missouri · 2026 Regular Session · Bill

SB 1237: Modifies provisions regarding income taxes, including the imposition of a 4% flat income tax

In committee Official data

  1. Introduced
  2. In committee
  3. Passed one chamber
  4. Passed both chambers
  5. Enacted

Last official action: ·Record last updated:

Plain-language summary

SB 1237 is a bill introduced in the Missouri Senate on December 1, 2025. According to its official title, it concerns: Modifies provisions regarding income taxes, including the imposition of a 4% flat income tax. Primary sponsor: Nick Schroer (Republican). Most recent recorded action (January 27, 2026): Second Read and Referred S Economic and Workforce Development Committee.

Generated automatically from the official title, sponsor list, and status record only. It does not characterize the bill’s purpose or effects. How summaries are written

Official summary

Abstract published by the legislature (via Open States). Text as published by the legislature; reproduced verbatim.

SB 1237 - Current law imposes a graduated income tax rate and authorizes reductions in the top rate of income tax contingent on certain state revenue collections, with an eventual top rate of 4.5%. This act provides that, for all tax years beginning on or after January 1, 2027, there shall be a flat income tax rate of 4% on all taxable income. This act also provides for additional reductions in the rate of tax until the income tax is eliminated. The reductions shall be equal to 0.1% and shall occur when the amount of net general revenue collected in the previous fiscal year exceeds the highest amount of net general revenue collected in any of the three fiscal years prior to such fiscal year by at least $120 million. (Section 143.011) Current law also authorizes an income tax deduction for a portion of federal income taxes paid. This act eliminates such deduction beginning with the 2027 tax year. (Section 143.171) This act is identical to SB 5 (2025 First Extraordinary Session) and is similar to SB 220 (2025). JOSH NORBERG

Sponsors

Sponsors by party (alphabetical): Republican 1

NameRolePartyChamberDistrict
Nick SchroerPrimary sponsorRepublicanSenate2

“Support” is shown only as formal sponsorship recorded by the legislature. Roll-call votes are available on the official bill page.

Recent official actions

  1. Second Read and Referred S Economic and Workforce Development Committee
  2. S First Read
  3. Prefiled

Sources

  1. Open States / Plural (data from the official legislature website)
  2. Official legislature source