Missouri's Clean Slate law is real. Here's what it actually automates.
By Ty McDuffey, J.D. · Author of state expungement guides
On July 9, 2026, Governor Kehoe signed a public-safety package that includes Missouri's first automatic expungement system — the "Clean Slate" provision of Senate Bill 1421, a campaign that had died in the legislature three years running before finally passing this session. It's a genuinely big deal. It's also narrower than the headlines, and the gap between those two facts is where most Missourians' questions live.
What the law does
Instead of requiring people to file a petition, pay a surcharge, and appear before a judge, the new system tells the state to clear certain eligible records on its own. The mechanics, as enacted: eligible misdemeanors become expungeable automatically one year after the case is fully resolved, eligible felonies after three years, with clean conduct in between. The automatic clearings count against the same lifetime caps as petitions — three misdemeanors and two felonies. The Missouri State Highway Patrol runs the program by matching offense codes across the state's records, and the statute requires the system to be operating "when technically feasible" and no later than January 1, 2027.
What it doesn't do
Three limits matter more than anything else in the coverage.
First, scope. The automatic track centers on nonviolent offenses — the enacting push was built around drug possession and paraphernalia convictions — and expressly excludes violent crimes and offenses against children. If your record involves anything outside the covered list, the machine will pass you by, and the petition process under section 610.140 remains your route.
Second, the backlog problem. "No later than January 1, 2027" is when the system must exist, not when every eligible record is clean. Missouri's marijuana auto-expungement after 2022 taught this lesson: the digital matches came fast, and the older paper records took years. If a background check is standing between you and a job right now, "the state will get to it" may not be an answer you can afford.
Third, the things automation can't reach. Arrests that never became convictions, the one-time ten-year DWI expungement under section 610.130, records the matching system misses or miscodes, and anyone whose offense mix needs judgment rather than an offense-code lookup — all of that stays petition work, judge and all.
So who should do what?
If your record is a covered, nonviolent conviction and nothing urgent is riding on it: wait, verify next year that the clearing actually happened, and keep the paperwork proving your sentence completion date. If your record falls outside the automatic lane — or you have an application, a lease, a license, or a custody matter that can't wait for a state rollout — the petition track under 610.140 works today, exactly as it did last month: the full statewide hub is here.
The bigger picture
Missouri already had some of the shortest expungement waiting periods in the country; what it had never done is clear a record without being asked. Fewer than one percent of eligible Missourians were getting expungements under the petition-only system — not because the law was stingy but because the process was invisible, intimidating, and cost money most eligible people didn't have. Automating the easy cases is the state admitting that. The honest summary of SB 1421: the simplest records will now clean themselves, and everyone else just got a very good reason to finally find out which kind they have.
Educational content only, current as of July 13, 2026 — verify against the enrolled bill text and current statutes before relying on any date or limit. Not legal advice; no attorney-client relationship. The choice of a lawyer is an important decision and should not be based solely upon advertisements.