Fault Decides Who Pays, and Fault Can Be Shared

California is a fault state — sometimes called a tort state. The person responsible for a collision, and their liability insurance, is responsible for the harm it caused. That sounds obvious until you compare it with the no-fault states, where each driver's own coverage responds first regardless of who caused it.

What follows from it

Liability coverage exists to pay other people for harm you cause, which is why the minimum limits in Insurance Code section 11580.1b are expressed as amounts per injured person, per accident, and for property damage. It is also why liability alone does nothing for your own vehicle — that is what collision coverage is for.

Shared fault is normal

Real collisions are rarely a clean hundred to nothing. California follows pure comparative fault, established by the California Supreme Court in Li v. Yellow Cab Co. Responsibility is apportioned, and a party's recovery is reduced by their own share of the blame. A driver found twenty percent responsible recovers eighty percent of their damages. There is no cut-off at which a partly-responsible party recovers nothing.

Fault gets decided more than once

This is the part that produces angry phone calls, so it is worth stating clearly. Three different bodies can reach three different conclusions about the same collision:

• The police officer at the scene, whose report is an opinion and is not binding on anyone.
• The insurance companies, each investigating and negotiating an apportionment between themselves.
• A court, if it gets that far, which is the only one that decides it authoritatively.

Why uninsured motorist coverage exists here

An at-fault system depends on the at-fault driver being able to pay. When they cannot — no insurance, or nothing like enough — the system's promise runs out. That gap is the entire reason uninsured and underinsured motorist coverage exists, and it is why it must be offered to you and may only be rejected in writing.

What to do at the scene, knowing this

Do not apportion fault out loud. Exchange what Vehicle Code section 16025 requires, photograph everything including the wider scene, get independent witness details, and let the process work. Apologizing is human; assigning blame is not your job and can be quoted back at you.

If this has you wondering whether your limits actually match your exposure, ask us to price a few levels side by side.