Montana’s cannabis reform laws opened a door that didn’t exist before: a path to marijuana expungement Montana residents with certain past convictions can now pursue, including some felony-level offenses. If you’ve been carrying a marijuana conviction on your record for years, assuming it would follow you forever, it’s worth understanding what’s changed and whether you now qualify.
What Changed Under Cannabis Reform
Montana’s expungement process now recognizes certain felony marijuana convictions as eligible for expungement, specifically because of the state’s cannabis reform laws. Before these changes, expungement eligibility was generally limited to misdemeanors and certain juvenile offenses. Now, some marijuana-related felony convictions can be expunged as well, a meaningful shift for people whose convictions predate Montana’s more recent approach to marijuana.
Who This Applies To
This expanded eligibility is specifically tied to marijuana convictions that qualify under Montana’s cannabis reform laws. Not every marijuana-related offense will automatically qualify, and eligibility still depends on the specific nature of your conviction. This is an area where the details of your individual case matter, and it’s worth having your specific conviction reviewed rather than assuming it either does or doesn’t qualify.
You Still Have to Meet the Standard Requirements
A marijuana conviction being eligible under cannabis reform doesn’t bypass Montana’s general expungement requirements. You still need to meet the same baseline conditions as any other expungement petition:
- No pending criminal charges against you.
- No new convictions in Montana or elsewhere for 5 years after completing your sentence, including paying fines and completing any required treatment.
Special exceptions may apply if you’re currently serving in, or applying to join, the military.
A Meaningful Shift in How Montana Treats These Records
For years, a felony marijuana conviction carried consequences that simply couldn’t be undone, regardless of how much the surrounding legal and social landscape around marijuana had changed. Cannabis reform’s impact on expungement eligibility reflects a broader shift in how Montana approaches these older convictions, giving people a real path forward that didn’t used to exist. That shift doesn’t erase what happened, but it can meaningfully change what that conviction means for your future.
Remember: You Only Get One Opportunity
Montana’s expungement process can only be used once in your lifetime. If you have a marijuana conviction that’s now eligible under cannabis reform, along with other eligible misdemeanor convictions, it’s often smart to petition to expunge all of them at the same time rather than using your one opportunity on a single conviction.
Why This Matters for Older Convictions
Many people carrying older marijuana convictions assumed for years that expungement simply wasn’t an option for them, especially if their conviction was a felony. Montana’s cannabis reform laws changed that assumption for at least some of those convictions, which means it’s worth revisiting a conviction you may have written off long ago. The legal landscape around marijuana has shifted significantly, and eligibility rules that applied when you were first convicted may no longer reflect where the law stands today.
What's Still Not Eligible
Cannabis reform expanded eligibility for certain marijuana convictions specifically, but it didn’t change the categories that remain generally excluded from Montana’s expungement process: serious violent felonies, sexual offenses, and repeat offenses generally still don’t qualify.
Why This Isn't Automatic
Even with cannabis reform expanding eligibility, expungement is never automatic. Nothing about the law change clears a record on its own. You still have to file a petition, meet the standard requirements, and go through the same court review process as any other expungement case. Some people assume a change in the law itself somehow updates their record automatically. It doesn’t. The petition process is still the only way to actually have a qualifying conviction expunged.
What Expungement Means for a Marijuana Conviction
If your petition is approved, the conviction is erased or sealed from public view. You can legally state that you haven’t been convicted of that offense in most situations, including job and housing applications, and the conviction is cleared from most background-check databases. For someone who’s carried a felony marijuana conviction for years, that can mean real, practical changes in what opportunities are available.
What to Gather Before Talking to an Attorney
If you’re considering pursuing expungement for a marijuana conviction, it helps to gather some basic information beforehand: the date of your conviction, the specific charge, the date your sentence was completed, including any fines or treatment requirements, and whether you have any other convictions you’d want addressed in the same petition. Having this information ready makes your initial consultation more productive and helps your attorney give you a clearer answer about your eligibility.
How the Process Works
Like any expungement case, the process starts with a petition filed in Montana District Court, followed by notice to the prosecutor, court review, and, if approved, submission of your fingerprints and paperwork to the CRISS office in Helena. The overall process typically takes about 30 to 90 days depending on court schedules and case complexity.
Find Out If You Qualify
Because eligibility under Montana’s cannabis reform laws depends on the specific facts of your conviction, the best way to know for sure is to have your case reviewed. Big Sky Defender offers flexible payment plans for expungement cases. Learn more on our expungement page.
If you have a marijuana conviction and want to know whether Montana’s cannabis reform laws make you eligible for expungement, Big Sky Defender offers a free consultation to review your record. Call our Missoula office at (406) 552-4653 or our Butte office at (406) 299-2905, or reach out through our contact page.
Frequently Asked Questions
Yes, certain felony marijuana convictions are now eligible for expungement under Montana’s cannabis reform laws, though not every marijuana-related offense automatically qualifies.
Yes. You still need no pending criminal charges and no new convictions in Montana or elsewhere for 5 years after completing your sentence, including paying fines and completing any required treatment.
Not necessarily. Since Montana’s expungement process can only be used once in your lifetime, it’s often smart to petition to expunge all of your eligible convictions, including a qualifying marijuana conviction, at the same time.
Eligibility depends on the specific facts of your conviction, so the best way to know for certain is to have an attorney review your case and confirm whether it qualifies under Montana’s cannabis reform laws.


