How to File a Missouri Rule 29.15 Motion After a Guilty Plea: Deadlines, Evidence, and Common Mistakes Explained
You generally have **90 days** after the Department of Corrections delivers you to file a **Missouri Rule 29.15** post-conviction motion following a guilty plea. Missing that deadline is usually fatal, even if your claims are strong. This article explains the filing clock, what evidence matters, how amended motions work, and the most common mistakes that cause dismissals in Missouri courts.
In Missouri, a guilty plea usually ends the case—but it does not always end the litigation. If your plea was affected by ineffective assistance of counsel, coercion, misunderstanding, or other constitutional problems, Missouri law provides a structured post-conviction process. One of the most important vehicles is a motion under Missouri Supreme Court Rule 29.15, which allows certain claims to be litigated after sentencing.
This guide focuses on what attorneys and clients need to know when the conviction follows a guilty plea: the filing deadlines, what you must prove, how evidence is developed, and the recurring mistakes that cause motions to be dismissed without a hearing.
What a Rule 29.15 Motion Is (and When It Applies After a Guilty Plea)
Rule 29.15 is Missouri’s post-conviction procedure for people convicted after trial (and, in practice, for many sentencing/post-sentence issues). After a guilty plea, many cases are instead governed by Rule 24.035, which is the post-conviction rule designed specifically for guilty pleas. However, in real-world practice, confusion arises because:
- Different procedural postures (trial vs. plea, direct appeal vs. no appeal) change which rule applies.
- People often use “29.15” as shorthand for “post-conviction motion,” even when Rule 24.035 governs.
- Deadlines and amendment rules are strict in both frameworks, and courts enforce them rigidly.
Practical takeaway: before drafting, confirm which rule governs your client’s case. If the conviction resulted from a guilty plea, Missouri courts typically analyze post-conviction claims under Rule 24.035; if the conviction followed trial, Rule 29.15 is the usual route. Because mislabeling and wrong timing can be case-ending, attorneys should verify the procedural track immediately from the sentencing docket and the Department of Corrections (“DOC”) delivery date.
Deadlines After a Guilty Plea: The 90-Day Clock and Why It Matters
Missouri post-conviction practice is deadline-driven. For many people seeking relief after a guilty plea, the controlling deadline is short, and courts treat it as mandatory.
The most common deadline: 90 days from delivery to DOC
For incarcerated movants, the typical window is 90 days after the DOC receives the offender (often described as the date the DOC “delivers” or takes custody after sentencing). This date may not be the sentencing date and may not be the date you arrived at a long-term facility; it is commonly tied to official DOC intake.
Example: A defendant is sentenced on January 10, transported to DOC custody on January 17, and processed shortly thereafter. A post-conviction motion filed April 20 is likely late if the operative “delivery” date is January 17 (90 days runs mid-April). A motion filed on April 10 is likely timely.
If there was a direct appeal (more common after trial)
In cases involving a direct appeal (usually trial cases), the deadline may be keyed to the date the appellate mandate issues, with a short window thereafter. Even when that is not the typical guilty-plea posture, attorneys should check the case history carefully to avoid assuming the wrong triggering event.
Late filing is usually fatal
Missouri motion courts routinely dismiss untimely motions without reaching the merits. “I didn’t know” or “my lawyer didn’t tell me” usually does not rescue an untimely filing. Treat the deadline as the first priority: obtain the DOC delivery date, calendar the due date, and file early if possible.
What Claims Can Succeed After a Guilty Plea?
After a guilty plea, the universe of claims narrows. Courts generally focus on whether the plea was knowing, voluntary, and intelligent, and whether counsel’s performance undermined that decision. Many pre-plea issues are waived by the plea unless they bear on voluntariness or jurisdiction.
Ineffective assistance of counsel (IAC) tied to the plea decision
The most common claim is ineffective assistance. To win, a movant typically must show:
- Deficient performance: counsel’s advice or investigation fell below reasonable standards; and
- Prejudice: but for counsel’s errors, the defendant would not have pleaded guilty and would have insisted on going to trial (or would have obtained a materially better outcome).
Concrete examples that can matter:
- Counsel failed to investigate an alibi witness before advising a plea.
- Counsel misadvised about a mandatory minimum or parole consequences central to the decision.
- Counsel did not communicate a plea offer accurately, leading to an uninformed acceptance/rejection.
Involuntary or unknowing plea
A plea may be challenged if it was the result of coercion, misunderstanding, or a failure to understand key rights being waived. Courts will compare these allegations to the plea colloquy transcript—so the record is often decisive.
Sentencing and credit issues (limited but important)
Some sentencing claims can be raised if they implicate legality (e.g., an illegal sentence), but many sentencing complaints are not cognizable post-plea unless they connect to counsel’s advice or the plea’s voluntariness.
Evidence That Wins (or Loses) a Rule 29.15-Type Case After a Plea
Missouri post-conviction litigation is evidence-driven. A well-pled motion is necessary, but without proof—documents, transcripts, credible testimony—relief is unlikely.
Start with the transcripts: plea and sentencing
The plea hearing transcript is typically the prosecution’s strongest exhibit because it often contains sworn answers such as “I’m satisfied with my lawyer,” “No one threatened me,” and “I understand the range of punishment.” To overcome that record, the motion must explain specifically:
- What advice was wrong or missing;
- Why the defendant’s plea answers do not reflect reality; and
- How the error changed the decision to plead.
Attorney file and discovery materials
In IAC cases, counsel’s file can be critical: investigation notes, plea offer emails, letters explaining exposure, and witness statements. If the claim is “my lawyer never told me about X,” documentary proof that X was never communicated (or was miscommunicated) can be pivotal.
Third-party witnesses and affidavits
Missouri courts often reject vague assertions like “a witness would have helped.” Stronger practice is to identify the witness, summarize expected testimony, and, where possible, obtain an affidavit or provide details showing availability and relevance.
Example: “My cousin would testify” is weak. “John Smith, who was with me at the time, would testify that I was in Kansas City at 8 p.m.; he is available and attached is his signed statement” is stronger.
DOC records and timeline proof
Because timeliness is so often litigated, keep DOC paperwork proving the delivery date. When timing is close, documentary proof can be the difference between dismissal and a hearing.
Procedure: Filing, Counsel Appointment, and Amended Motions
Missouri post-conviction cases typically proceed in phases:
1) File the initial pro se motion on time
The initial filing is often pro se. The priority is preserving the case by filing within the deadline. A short, timely motion is generally better than a perfect motion filed late.
2) Appointment of counsel (when available) and entry of appearance
Indigent movants are often appointed post-conviction counsel. Counsel then reviews the record, investigates, and determines what claims are viable.
3) Amended motion deadline is strict
Missouri’s post-conviction rules impose tight amendment deadlines once counsel is appointed or once transcripts are filed/available (depending on the procedural rule and case posture). Courts frequently deny late amendments, even when the new claim is substantial.
Practice tip: Track the amended-motion due date like a statute of limitations. If transcripts are delayed, move for appropriate relief early rather than assuming the court will extend deadlines informally.
4) Evidentiary hearing vs. denial on the pleadings
The motion court may deny without a hearing if the motion:
- Fails to plead facts (not conclusions) warranting relief;
- Is refuted by the record; or
- Does not show prejudice.
If a hearing is granted, witness credibility becomes central—often the movant versus plea counsel—so preparation matters.
Common Mistakes That Get Motions Dismissed (or Weakened)
1) Missing the deadline by even one day
This is the most common—and the hardest to fix. Confirm the correct triggering date (DOC delivery or mandate, as applicable), then file early.
2) Filing under the wrong rule (29.15 vs. 24.035)
After a guilty plea, using the wrong procedure can create avoidable litigation about timeliness and cognizability. Even if courts sometimes look past labels, do not rely on that. Match the rule to the posture.
