Missouri Enacts Automatic 'Clean Slate' Expungement for Drug Offenses Under SB 1421
Independently fact-checked against primary sources (last audited July 11, 2026). · 3 primary sources cited on this page. How we verify our legal content
Missouri Enacts Automatic 'Clean Slate' Expungement for Drug Offenses Under SB 1421
Gov. Mike Kehoe signed Missouri Senate Bill 1421 on July 8, 2026, creating an automated system that will expunge eligible low-level drug possession and paraphernalia convictions without a court petition once the Missouri State Highway Patrol certifies the program is ready.
Information last verified on July 11, 2026. This is a developing story; we update it as the record changes.
Status: Signed into law July 8, 2026. The automated expungement system takes effect when the Highway Patrol certifies it is technically feasible, and no later than January 1, 2027.
Jurisdiction scope: This article addresses Missouri's new automated expungement process for drug possession and paraphernalia convictions under SB 1421, and how it interacts with Missouri's existing petition-based expungement statute, Mo. Rev. Stat. Section 610.140. It does not address expungement or record-sealing law in other states; for a broader view, see record-clearing laws across the states.
What Happened
On July 8, 2026, Missouri Gov. Mike Kehoe signed Senate Bill 1421 into law, one of 19 bills he signed that day as part of a wide-ranging public safety package. SB 1421 is sponsored by Sen. Nick Schroer, R-Defiance; the automated expungement provisions inside it originated in a separate bill from Sen. Brian Williams, D-St. Louis County, that lawmakers folded into SB 1421 during the session. The Missouri Senate passed the bill 28-4 with an emergency clause attached. The law directs the Missouri State Highway Patrol's central criminal records repository to identify and expunge eligible drug possession and unlawful drug paraphernalia convictions automatically, without requiring the person to file a court petition. Eligible misdemeanors qualify for expungement one year after final disposition of the case; eligible nonviolent felonies qualify after three years. The law caps automatic expungements at three misdemeanors and two felonies per person, and it excludes violent crimes, offenses against children, and drug trafficking offenses.
What the Law Actually Says
Missouri has long allowed residents to petition a circuit court for expungement under Mo. Rev. Stat. Section 610.140, most recently amended by 2024 legislation effective January 1, 2025. That statute already sets a 3-year waiting period for eligible felonies and a 1-year waiting period for eligible misdemeanors, and it already caps lifetime expungements at 2 felonies and 3 misdemeanors. SB 1421 adopts those same waiting periods and caps for the new automated process, but it changes who does the work. Instead of a person hiring a lawyer or preparing a petition, the Highway Patrol's central repository screens its own records for eligible drug possession and paraphernalia convictions and initiates expungement without a filing.
The automated layer is narrower in subject matter than Section 610.140. It reaches drug possession and unlawful-use-of-paraphernalia convictions specifically, while the existing petition-based statute covers a much wider range of misdemeanors and felonies, subject to its own exclusions for offenses such as Class A felonies, dangerous felonies, and sex offenses. Our Missouri expungement guide covers the full Section 610.140 framework, including the six eligibility factors a court weighs and the offenses that remain permanently excluded. SB 1421 does not replace that petition process; someone with a qualifying drug conviction can still be expunged automatically under the new law, while a person seeking to clear a different type of conviction still files under Section 610.140.
Analysis: Why This Matters
The following is analysis from the Recording Law Editorial Team.
Missouri's move fits a pattern that has been building across the country for several years. According to the Clean Slate Initiative, which tracks state automatic-record-clearing legislation nationally, Missouri becomes roughly the 14th state to enact a Clean Slate-style law that shifts the burden of seeking expungement away from the individual and onto a government agency. Illinois recently shortened its Clean Slate waiting periods as an intermediate step before its own fully automated sealing system phases in later this decade, and Missouri's approach follows a similar logic: use an existing petition-based statute as the eligibility template, then automate the highest-volume category of qualifying convictions first.
The choice to start with drug possession and paraphernalia offenses is notable. Advocates who backed the measure, including business groups that lobbied for it over several years, argued that low-level drug convictions create some of the most persistent barriers to employment and housing even long after a sentence is served. Because SB 1421 borrows its waiting periods and per-person caps directly from Section 610.140, the new law does not lower Missouri's eligibility bar; it removes the procedural step of filing a petition for the offenses it covers. We do not predict how quickly the Highway Patrol will build the system, how many records will ultimately qualify, or how courts will treat any implementation disputes; SB 1421 itself gives the agency until January 1, 2027, to be ready, with no requirement that it act sooner.
How This Affects You
For a conviction to qualify under SB 1421, it generally must be a drug possession or drug paraphernalia offense that falls within the misdemeanor or nonviolent-felony categories the law defines, and it must fall within the three-misdemeanor, two-felony lifetime cap. Courts and the Highway Patrol have not yet published implementation procedures, so the practical mechanics of how a person confirms their own record was expunged remain undetermined as of this writing. In the meantime, Missouri's existing petition process under Section 610.140 remains available for eligible convictions the automated system does not reach.
Other states have taken different paths to the same general goal. New York's automatic sealing law seals a broader range of eligible convictions after set waiting periods measured in years rather than limiting the program to a single offense category, illustrating how much variation exists among states that use the "Clean Slate" label. Anyone with a Missouri drug conviction who wants to know whether it currently qualifies, either automatically once the new system launches or by petition today, should consult the underlying statutes or a licensed Missouri attorney rather than rely on general descriptions of the law.
This is general legal information, not legal advice. It covers Missouri law and reflects sources verified on July 11, 2026. Laws change and this story is developing; consult a lawyer licensed in your jurisdiction about your specific situation.
Related articles
- Missouri's petition-based expungement process
- Record-clearing laws across the states
- Illinois recently shortened its Clean Slate waiting periods
- New York's automatic sealing law
Last updated: 2026-07-11. This is a developing story; details verified as of 2026-07-11.
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Frequently Asked Questions
What is Missouri's Clean Slate law?
It is the automated expungement provision inside Senate Bill 1421, signed by Gov. Mike Kehoe on July 8, 2026. It directs the Missouri State Highway Patrol to identify and expunge eligible low-level drug possession and paraphernalia convictions without requiring the person to file a court petition.
When does Missouri's automatic expungement system take effect?
The system takes effect once the Missouri State Highway Patrol certifies it is technically feasible, and no later than January 1, 2027, under SB 1421.
Which convictions qualify for automatic expungement under SB 1421?
The law covers eligible drug possession and unlawful drug paraphernalia convictions. Eligible misdemeanors qualify one year after final disposition, and eligible nonviolent felonies qualify after three years. Violent crimes and offenses against children are excluded.
How many expungements can a person get under the new Missouri law?
SB 1421 limits automatic expungements to three misdemeanors and two felonies per person, the same lifetime caps that already apply to petition-based expungement under Mo. Rev. Stat. Section 610.140.
Do Missourians need to file a petition to get a drug conviction expunged under SB 1421?
No. For convictions that qualify under the new automated process, the Missouri State Highway Patrol identifies and expunges the record without the person filing a petition. Missouri's existing petition process under Section 610.140 still applies to convictions the automated system does not cover.
What agency administers Missouri's automatic expungement program?
The Missouri State Highway Patrol's central criminal records repository administers the program under SB 1421.
How does SB 1421 relate to Missouri's existing expungement statute?
Mo. Rev. Stat. Section 610.140 is Missouri's general petition-based expungement law, amended effective January 1, 2025 to allow up to 2 felony and 3 misdemeanor expungements in a lifetime with 3-year and 1-year waiting periods. SB 1421 uses those same waiting periods and caps for its automated process but limits that automation to drug possession and paraphernalia convictions.
Who sponsored Missouri's Clean Slate legislation?
SB 1421 is sponsored by Sen. Nick Schroer, R-Defiance. Its automated expungement provisions originated in a separate bill from Sen. Brian Williams, D-St. Louis County, that was incorporated into SB 1421, and the Senate passed the combined bill 28-4.
Updates
Independently fact-checked against the cited primary sources
The Law Behind This Article
This article rests on the statutory provisions below, held in our own legal record and retrieved from the official source. Tap a section to read the operative text.
Revised Statutes of Missouri, Title XXXIX (CONDUCT OF PUBLIC BUSINESS), Chapter 610
§ 610.140Expungement of certain criminal records — definitions — petition, contents, procedure — effect of expungement on employer inquiry — lifetime limits.In forcecited in 6 of our articles
1. For the purposes of this section, the following terms mean: (1) "Court", any Missouri municipal, associate circuit, or circuit court; (2) "Crime", any offense, violation, or infraction of Missouri state, county, municipal, or administrative law; (3) "Prosecutor" or "prosecuting attorney", the prosecuting attorney, circuit attorney, or municipal prosecuting attorney. 2. (1) Notwithstanding any other provision of law and subject to the provisions of this section, any person may apply to any court in which such person was charged or found guilty of any crimes for an order to expunge records of such arrest, plea, trial, or conviction. (2) Subject to the limitations of subsection 13 of this section, a person may apply to have one or more crimes expunged if each such crime occurred within the state of Missouri and was prosecuted under the jurisdiction of a Missouri court, so long as such person lists all the crimes he or she is seeking to have expunged in the petition and so long as all such crimes are not excluded under subsection 3 of this section.
Official text (excerpt) · last checked 2026-09-07 · Read the full text in our law library · Verify at revisor.mo.gov
Cited in 15 court opinions in our collectionLatest citing opinion in our collection: 2026
In the courts (editorial summary, independently checked):Perkins v. Bridgeton Police Dept. (2018) read Section 610.140 by its plain text, holding a forgery conviction could not be expunged because the statute did not list it, though the same conduct charged otherwise would qualify. S.E.M. v. St. Louis County (2019) held the statute is remedial, so a later amendment governed a pending petition.
Opinions citing this section in our collection:
- Perkins v. Bridgeton Police Dept. (Missouri Court of Appeals 2018, 549 S.W.3d 504)✓Nine 1991 forgery convictions were expunged below on the reasoning that the same check conduct could have been charged as a fraudulent-device offense the statute allows. The court held section 610.140's list of eligible offenses is plain, forgery is absent, and reversed.
- Randall D. Friedberg v. Mark S. Owen, Platte County Sheriff (Missouri Court of Appeals 2020)✓A sheriff denied a concealed carry permit solely because the applicant pleaded guilty to a 1991 felony later expunged under section 610.140. The court held subsection .9 bars automatic disqualification for an expunged offense, though the sheriff may still weigh it as one factor.
- S.E.M. v. St. Louis County, Missouri, and Missouri State Highway Patrol Criminal Records Repository (Missouri Court of Appeals 2019)✓The state patrol argued a 1993 misdemeanor within seven years of S.E.M.'s discharge barred expunging his 1987 felony drug convictions forever. The court held the seven-year window in the August 2018 version of 610.140.5(1) counts backward from the petition's filing.
Identified automatically from the court opinions citing this section — not a ranking of which case controls.
Also relied on in: Missouri Expungement Laws: Mo. Rev. Stat. § 610.140 Guide (2025), How Long Does a Felony Stay on Your Record? (2026), Missouri Background Check Laws (2026 Guide)
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Sources and References
- Missouri Senate, SB 1421 Bill Information (2026 Regular Session)(senate.mo.gov).gov
- Governor Kehoe Advances Public Safety Priorities with Signing of Legislation, July 8, 2026(governor.mo.gov).gov
- Mo. Rev. Stat. Section 610.140 (expungement of certain criminal records)(revisor.mo.gov).gov
- The Clean Slate Initiative, state-by-state Clean Slate legislation tracker(cleanslateinitiative.org)