For the Missouri Personal Lines exam, the Personal Auto Policy (PAP) is tested two ways: the national policy structure and the Missouri auto laws layered on top of it. This standalone guide walks through the lettered parts every PAP uses, then focuses on the Missouri rules an agent must apply every day—financial-responsibility minimums, the at-fault legal system, the mandatory uninsured-motorist requirement, the optional underinsured-motorist coverage, and how policies can be cancelled or nonrenewed. Spend your study time on the Missouri overlay; that is where the state questions live.

The national fundamentals (quick version)

The Personal Auto Policy insures individuals and families for the vehicles they own and drive. It is divided into clearly labeled parts:

• Part A — Liability Coverage: pays for bodily injury (BI) and property damage (PD) the insured is legally responsible for, and includes a duty to defend with defense costs paid on top of the limit.
• Part B — Medical Payments: pays medical and funeral expenses for the insured and passengers regardless of fault.
• Part C — Uninsured/Underinsured Motorists (UM/UIM): pays your injuries when the at-fault driver has no insurance or too little.
• Part D — Coverage for Damage to Your Auto: Collision and Other Than Collision (Comprehensive), each with a deductible, paid at Actual Cash Value (ACV).
• Part E — Duties After an Accident or Loss and Part F — General Provisions set the rules.

An insured generally includes the named insured, the resident spouse, resident family members (including a child away at school), and anyone using the covered auto with permission. Eligible vehicles are private passenger autos, pickups, and vans not used primarily for business; using the car as a public/livery conveyance is excluded. That skeleton is the same nationwide; Missouri changes the dollar limits and the legal environment around it.

Missouri is an at-fault (tort) state

Missouri follows a tort (at-fault) system rather than a no-fault system. Whoever causes the crash is financially responsible, and the injured person recovers from that driver's liability insurance—or sues. Because of this, liability coverage and proof of financial responsibility are the backbone of Missouri auto regulation.

When both drivers share blame, Missouri uses pure comparative negligence. Picture it as a simple proportion: each party's recovery is trimmed by their own percentage of fault, and there is no cutoff that bars recovery. A driver who is 80% responsible can still collect 20% of their damages. This differs from a modified comparative system (where being more than 50% at fault bars all recovery) and from a no-fault system (where each driver turns first to their own coverage). Do not import Illinois's 50% bar into Missouri.

Financial responsibility: the 25/50/25 minimums

Missouri drivers must demonstrate financial responsibility, almost always by buying liability insurance that meets the state's minimum split limits of 25/50/25:

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

Agents say this aloud as "25/50/25." In split limits, the third number ($25k) is the property-damage limit per accident—and in Missouri it equals the per-person BI floor, not a lower $20k figure. These are bare-minimum floors—most clients should buy more to protect their assets. Missouri requires proof of insurance to register and plate a vehicle, and an uninsured driver faces fines, suspension, and reinstatement fees. A bond or deposit can technically satisfy the law, but auto liability insurance is the everyday method, and an SR-22 certifies that the required coverage is in force.

Mandatory uninsured motorist coverage

Here is a point Missouri agents must never get wrong: Uninsured Motorist (UM) bodily injury coverage is required on every Missouri auto policy, written at limits at least equal to the 25/50 bodily-injury minimums. UM protects you and your passengers when the at-fault driver carries no insurance or flees the scene (hit-and-run).

An applicant cannot end up with a legal Missouri policy that has no UM bodily-injury coverage.

Underinsured motorist coverage

Underinsured Motorist (UIM) handles the situation where the at-fault driver has insurance, just not enough to cover your injuries.

• In Missouri, UIM is not mandatory. Insurers generally must make it available/offer it, and a customer who declines typically must reject it in writing.
• UIM pays the difference between the other driver's lower BI limit and your UIM limit—so a client with strong UIM is protected even against a bare-minimum at-fault driver.
• Stacking of UM/UIM limits across vehicles or policies may be available where the policy and state law permit.

The recurring theme: UM bodily injury is mandatory, while UIM is optional and offered—the opposite emphasis from "everything is required."

No PIP, plus the optional coverages

• Missouri does not require PIP / no-fault coverage. Medical Payments (Med Pay) is available as an optional first-party coverage that pays medical and funeral costs regardless of fault.
• Collision and Comprehensive (Other Than Collision) are optional, though a lender will usually require them on a financed vehicle. Remember that damage from hitting an animal is Comprehensive, not Collision.
• Add-ons include towing and labor, rental reimbursement, and loan/lease (gap) coverage, which pays the difference between the auto's ACV and the loan balance after a total loss.

Cancellation and nonrenewal notice

Missouri limits how and when an insurer can end a personal auto policy, requiring advance written notice before cancellation or nonrenewal. The timelines are commonly cited as follows (verify current figures):

• Cancellation for nonpayment of premium uses a shorter notice (often around 10 days).
• Other mid-term cancellations require a longer advance written notice (commonly around 30 days), and after a policy has been in force a set time the insurer may cancel only for limited reasons—chiefly nonpayment, driver's-license suspension/revocation, or fraud/material misrepresentation.
• Nonrenewal (declining to continue at the end of the term) likewise requires advance written notice, commonly around 30 days.

Keep the short nonpayment window separate from the longer ordinary-cancellation / nonrenewal window.

Required vs. optional coverages in Missouri

Key Missouri numbers to memorize

Common exam traps

• Missouri is at-fault, not no-fault—there is no mandatory PIP here.
• 25/50/25—the property-damage figure is $25k, equal to the per-person BI floor; don't drop it to $20k.
• UM is mandatory; UIM is only offered (reject in writing)—don't reverse them.
• Pure comparative negligence: no fault percentage bars recovery (watch for the Illinois 50%-bar distractor).
• UIM fills the gap (your UIM limit minus the other driver's BI payment); it isn't a second full benefit on top.
• Hitting an animal is Comprehensive, not Collision.
• Liability defense costs are paid in addition to the limit (national rule that still applies in Missouri).

Quick recap

• The PAP keeps its national Parts A–F structure; Missouri changes the limits and legal context.
• Missouri is a tort/at-fault state using pure comparative negligence, where recovery is reduced by fault but never barred.
• Financial-responsibility minimums are 25/50/25.
• Uninsured Motorist BI is mandatory (at least 25/50), and Underinsured Motorist is optional and offered (reject in writing).
• Missouri has no mandatory no-fault/PIP; Med Pay, Collision, and Comprehensive are optional.
• Cancellation for nonpayment uses a short (~10-day) notice; ordinary cancellation/nonrenewal uses a longer (~30-day) notice—verify the exact figures.