Missouri Castle Doctrine (2026): RSMo 563.031 and the Absolute Defense
Missouri does not use a presumption at all. RSMo 563.031 authorizes defensive force directly, which is a stronger form of the same protection.
The short version
- At home, do you have to back away first? No.
- Does the law assume your fear was reasonable? No, you would have to show it.
- Away from home? In Missouri, you can stand your ground, and it is written into the statute.
- Are you protected from being sued afterwards? Yes — the statute shields you from a lawsuit.
- Can a judge end the case before trial? No — it goes to a jury.
Last verified 5 September 2026 · source: official Missouri state source
Missouri does not use a presumption — it authorizes the force directly. RSMo § 563.031 permits defensive force against a person who unlawfully enters, remains after unlawfully entering, or attempts to enter a dwelling, residence or vehicle lawfully occupied by you, with no duty to retreat from any of them, from private property you own or lease, or from anywhere else you have a right to be. Section 563.074 makes justified force an absolute defense to criminal prosecution and civil liability.
Missouri castle doctrine at a glance
| Classification | Statutory, no presumption |
|---|---|
| Primary citation | Mo. Rev. Stat. § 563.031 |
| Duty to retreat in the home | No |
| Presumption of reasonable fear | No — direct authorization instead |
| Places covered | Dwelling; residence; lawfully occupied vehicle; private property owned or leased; any place with a right to be |
| Civil immunity | Yes — § 563.074, absolute defense plus mandatory fees |
| Last amended | 2016 |
| Source verification | Official state source |
What does the Missouri statute actually cover?
Read the no-retreat clause closely, because Missouri wrote it as a list rather than a phrase: no duty to retreat from a dwelling, residence or vehicle where you are not unlawfully entering or remaining; from private property owned or leased by you; or from any other location you have a right to be. The middle item is the unusual one. Most castle statutes reach the structure. Missouri’s reaches the land.
No presumption, but a broader trigger
Missouri buys with scope what other states buy with a presumption. Where Florida requires an entry that is both unlawful and forcible before the presumption attaches, Missouri’s text reaches a person who unlawfully enters, remains after unlawfully entering, or attempts to enter. The remaining-after clause covers the intruder who came in quietly and would not leave — a situation that falls outside the forcible-entry trigger in several other states.
The tradeoff is real: without a presumption, the reasonableness of your belief is yours to establish.
Where does the protection stop?
You must not be the one unlawfully entering or unlawfully remaining in the dwelling, residence or vehicle, and the general aggressor and provocation limits in § 563.031 still apply.
Can you still be sued in Missouri?
Section 563.074 states that justified force is an absolute defense to criminal prosecution or civil liability, and a prevailing civil defendant is awarded attorney’s fees, court costs and reasonable expenses on a mandatory basis. Together with the 2016 expansion of the no-retreat rule — S.B. 656, enacted over a veto — it puts Missouri in the top tier for civil protection.
Common questions about Missouri’s castle doctrine
Does Missouri have a castle doctrine?
Yes. Missouri has a castle doctrine, and it is written into Mo. Rev. Stat. § 563.031. Inside your own home you are not required to back away before defending yourself. The law does not assume your fear was reasonable, so that is something you would have to show.
Do I have to back away before defending myself at home in Missouri?
No. Inside your own home, Missouri does not ask you to back away first. That is what the castle doctrine means in practice. Missouri sets it out in Mo. Rev. Stat. § 563.031.
Does the castle doctrine apply outside my home in Missouri?
Missouri puts the rule in its statute: you may stand your ground. You are not required to retreat. This covers any place you are lawfully entitled to be.
Does Missouri assume I was really in danger?
No. Nothing is assumed in your favor, so you would have to show your fear of serious harm was reasonable in the circumstances.
Can I still be arrested, charged or sued in Missouri?
Yes. Self-defense is something you raise in your defense, not something that stops a case being opened in the first place.
Can a judge end it before trial? No. Self-defense is argued at trial and decided by the jury, not beforehand.
And can you be sued? Yes. If the force was lawful, the statute shields you from being sued over it.
Where these answers come from
Every figure above was read against the statute itself rather than a summary, on the state’s official server. Where a state agency page and the statute disagree, the statute governs.
- Mo. Rev. Stat. § 563.031 — official
- Civil immunity: Mo. Rev. Stat. § 563.074.1–.2 (2007; framed as an ‘absolute defense’)
- Stand-your-ground rule: Mo. Rev. Stat. § 563.031.3(3)
- Last amended: 2016
- Last checked by us: 5 September 2026
Worth watching: No statutory change since S.B. 656 (eff. 10/14/2016). Open question: whether § 563.074’s ‘absolute defense’ supports pretrial dismissal — unanswered by any Missouri appellate court. State v. Lechocki (Mo. App. E.D., Nov. 2025) broadened forcible-felony deadly force; transfer denied 2/26/2026.
Related on Freedom’s Lodge
- Missouri stand-your-ground law
- Open carry laws by state — interactive map
- Concealed carry reciprocity map
- Castle doctrine in all 50 states — the full comparison table, with every statute cited
- Missouri gun laws — permits, carry, purchase and transport
- Concealed carry reciprocity — which states honor a Missouri permit
- Firearms & 2A legal glossary — plain-language definitions of the terms above
How this guide was made: every entry was built by pulling the state’s own statute or controlling case from the legislature, revisor, or court website and recording what it actually says — no summaries of summaries. Where a state’s official site blocked automated access, we used the Cornell LII or Justia mirror and labeled that row so you know the difference. Research assembled August 18, 2026 and human-edited before publication.