On the Missouri Property & Casualty exam, the Personal Automobile Policy appears both as a standard ISO-style contract and as a set of Missouri auto statutes you must apply. This standalone guide reviews the policy's coverage parts, then drills into the Missouri overlay: the 25/50/25 financial-responsibility minimums, the at-fault (tort) system with pure comparative negligence, the mandatory uninsured-motorist rule and the optional (offered) underinsured-motorist rule, and cancellation/nonrenewal notice. The Missouri-specific material is where most state credit is earned.

Policy structure (the national base)

The Personal Auto Policy (PAP) is a packaged contract organized into lettered parts:

• Part A — Liability: pays bodily injury (BI) and property damage (PD) the insured is legally liable for; the insurer provides a defense, and defense costs are paid in addition to the limit.
• Part B — Medical Payments: pays medical/funeral costs for occupants regardless of fault.
• Part C — Uninsured/Underinsured Motorists: pays the insured's injuries when the at-fault party is uninsured or underinsured.
• Part D — Coverage for Damage to Your Auto: Collision and Other Than Collision (Comprehensive), each with a deductible, settled at Actual Cash Value (ACV).
• Part E — Duties After an Accident or Loss and Part F — General Provisions.

Limits may be written as split limits (e.g., 100/300/50) or as a Combined Single Limit (CSL). Insureds include the named insured, resident spouse, resident relatives, and permissive users. Eligible vehicles are private passenger autos, pickups, and vans not used mainly for business; using the auto as a public or livery conveyance (taxi/for-hire) is excluded. That framework is national; Missouri governs the limits and the liability environment around it.

Missouri uses a tort (at-fault) liability system

Missouri is an at-fault / tort state, not a no-fault state. The driver who causes a crash is financially responsible, and the injured party collects from that driver's liability coverage or by filing suit. This is why liability coverage and financial responsibility dominate Missouri auto law.

Missouri applies pure comparative negligence. The rule to remember: a claimant's recovery is reduced by their own percentage of fault, but they are never completely barred—even a claimant who is 90% at fault can still recover the remaining 10%. (Contrast this with Illinois's modified comparative rule, where being more than 50% at fault bars recovery entirely. Don't apply the Illinois 50% bar in Missouri.)

Financial responsibility: 25/50/25

Every Missouri driver must show financial responsibility, usually by carrying liability insurance at or above the minimum split limits:

• $25,000 bodily injury per person
• $50,000 bodily injury per accident
• $25,000 property damage per accident

Shorthand: "25/50/25." Note that Missouri's property-damage floor is $25,000, not the $20,000 some neighboring states use. These are statutory floors; producers routinely recommend higher limits. Proof of insurance is required to register a vehicle, and driving without coverage brings fines, license/registration suspension, and reinstatement fees. A bond, deposit, or certificate of self-insurance can satisfy financial responsibility, but liability insurance is the standard method. An SR-22 is a certificate filed to verify a driver maintains the required coverage.

Uninsured and underinsured motorist rules

This is a heavily tested Missouri distinction—watch it closely:

• Uninsured Motorist (UM) bodily injury coverage is MANDATORY on every Missouri auto policy, at limits at least equal to the 25/50 BI minimums. UM also responds to hit-and-run drivers.
• Underinsured Motorist (UIM) is NOT required in Missouri. Insurers must offer it, and an applicant who declines it generally must reject it in writing. (This differs from Illinois, where UIM tracks the UM limits more tightly.)
• UIM pays the gap between the at-fault driver's lower BI limits and the insured's UIM limit.
• Stacking combines UM (or UIM) limits across multiple vehicles or policies where state law and the policy permit.

Memorize the headline: in Missouri, UM bodily injury is mandatory (at least 25/50), but UIM is optional and offered (reject in writing).

Optional and physical-damage coverages

• Medical Payments (Med Pay) is optional and pays medical/funeral costs regardless of fault. Missouri does not mandate PIP/no-fault.
• Collision and Comprehensive (Other Than Collision) are optional but typically required by a lender. Hitting an animal (e.g., a deer) is Comprehensive, not Collision.
• A newly acquired auto generally gets automatic coverage for a limited period, subject to notice. A named driver exclusion removes coverage while a specific excluded person is driving. On a total loss, the insurer generally pays ACV minus any deductible.

Cancellation and nonrenewal

Missouri regulates how an insurer may end a personal auto policy, and requires advance written notice before cancellation or nonrenewal so the insured can find replacement coverage. The timelines are commonly cited as:

• Mid-term cancellation generally requires advance written notice (often around 30 days, with a shorter window—about 10 days—allowed for nonpayment of premium). Verify the current figures.
• After a policy has been in force a set period, cancellation is limited to specific reasons such as nonpayment, license suspension/revocation, or fraud/material misrepresentation.
• Nonrenewal at the end of the term likewise requires advance written notice (commonly around 30 days).

Keep the shorter nonpayment-cancellation notice distinct from the longer ordinary cancellation / nonrenewal notice.

Required vs. optional coverages

Key Missouri numbers to memorize

Common exam traps

• Missouri is at-fault (tort), not no-fault. There is no mandatory PIP.
• 25/50/25—the third number ($25k) is property damage and is larger than some states' $20k floor.
• UM is mandatory; UIM is only offered. Don't say UIM is mandatory in Missouri.
• Pure comparative negligence—a claimant is never fully barred by their own fault. Do not apply Illinois's "more than 50% = barred" rule here.
• UIM fills the gap up to your UIM limit minus the other driver's BI payment; it is not a separate full payout.
• Hitting an animal is Comprehensive, not Collision.
• Liability defense costs are paid on top of the limit (national rule that still applies in Missouri).

Quick recap

• The PAP's Parts A–F structure is national; Missouri sets the limits and legal framework.
• Missouri is a tort/at-fault state using pure comparative negligence—recovery is reduced by fault but never barred.
• Minimum liability is 25/50/25.
• Uninsured Motorist BI is mandatory (at least 25/50); Underinsured Motorist is optional and must be offered (reject in writing).
• Missouri has no mandatory no-fault/PIP; Med Pay and physical damage are optional.
• Cancellation for nonpayment uses a shorter (~10-day) notice; ordinary cancellation/nonrenewal uses a longer (~30-day) notice—verify the exact figures.