3.1 Washington Auto Insurance Requirements

Mandatory Financial Responsibility

Washington's Mandatory Liability Insurance law (RCW 46.30) requires every operator of a motor vehicle to carry proof of financial responsibility. The standard method is a liability policy meeting the 25/50/10 minimums. These limits did not change for 2026.

Minimum Liability Limits (25/50/10)

These are third-party limits — they protect people the insured injures, not the insured. A producer should warn clients that $10,000 PD barely covers an average new-vehicle total loss, so higher limits are usually recommended.

Alternatives to a Liability Policy

A driver may instead satisfy financial responsibility with a certificate of deposit of $60,000 filed with the Department of Licensing (DOL), a liability bond of $60,000, or a self-insurance certificate (available to fleets of 26+ vehicles). Most consumers simply buy a policy.

Proof of Insurance and the SR-22

Washington accepts electronic proof of insurance shown on a smartphone, as well as a paper card. After certain serious violations (a no-insurance accident, a DUI, or driving on a suspended license), DOL requires an SR-22 — a certificate the insurer files confirming continuous coverage, typically for three years. An SR-22 is not a policy; it is proof attached to one.

Penalties for Driving Uninsured

At-Fault Tort System with Pure Comparative Negligence

Washington is a tort (at-fault) state, not a no-fault state. The party who causes a crash — through their liability insurer — pays the injured party. Fault is divided using pure comparative negligence (RCW 4.22.005).

How Pure Comparative Negligence Works

• Each party's recovery is reduced by their own percentage of fault.
• There is no 50% bar — even a plaintiff 99% at fault may recover the remaining 1%.

Worked example: Driver A (70% at fault) suffers $20,000 in damages; Driver B (30% at fault) suffers $40,000. A recovers $20,000 × 30% = $6,000 from B. B recovers $40,000 × 70% = $28,000 from A. Compare this to a modified comparative state where A, being over 50% at fault, would recover nothing.

Common trap: Candidates confuse pure comparative negligence with contributory negligence (which bars any recovery if the plaintiff is even 1% at fault) or with the modified 50%/51% bar. Washington applies neither bar.

Personal Injury Protection (PIP)

PIP is first-party medical and wage coverage that pays the insured and passengers regardless of fault. Under RCW 48.22.085, every auto insurer must offer PIP, but the applicant may reject it in writing. If purchased, the statutory minimum benefits are:

Insurers commonly offer higher PIP options such as $35,000. Because Washington is an at-fault state, PIP is optional, unlike true no-fault states where PIP is mandatory and tort rights are restricted. Trap: PIP being "offered" is not the same as "mandatory" — the only mandatory auto coverage is liability.

Uninsured and Underinsured Motorist (UM/UIM)

Washington combines uninsured- and underinsured-motorist protection. Under RCW 48.22.030, insurers must offer UIM with limits equal to the policy's liability limits; the insured may reject it (or buy lower limits) only in writing.

What UM/UIM Covers

• UM pays when the at-fault driver has no insurance or is a hit-and-run phantom vehicle.
• UIM pays the gap when the at-fault driver's limits are too low to cover the injury.

Worked example: The insured suffers $80,000 in injuries. The at-fault driver carries only the 25/50/10 minimum, paying $25,000. If the insured carries $100,000 UIM, UIM pays the $55,000 shortfall ($80,000 − $25,000).

Rejection Rules

Optional Physical-Damage and Medical Coverages

Lenders require Collision and Comprehensive while a loan or lease is outstanding, but the state never mandates them. A producer's checklist: confirm 25/50/10 liability, then document the written PIP and UIM offer/rejection in every file to avoid an unfair-practices complaint.