Understanding Colorado car accident insurance rates after a not-at-fault crash is critical — and the law is clearly on your side. Colorado protects you from unfair premium increases. Here’s what every driver in the state needs to know.
You’re stopped at a red light when another driver runs into the back of your car. The police report is clear — you did nothing wrong. You exchange information, report the crash to your insurer, and then a few weeks later, your renewal notice arrives with a higher premium.
It happens more often than it should. And when it does, many Coloradans simply accept it, assuming insurance companies have the right to raise their rates after any accident, regardless of who was at fault.
They don’t.
Car Accident Insurance Rates: Colorado Law Protects You
Colorado has a statute specifically designed to prevent this kind of unfair treatment. C.R.S. § 10-4-628 is one of the most important — and least known — consumer protections in Colorado’s automobile insurance laws. It places firm restrictions on what an insurer can and cannot do after a not-at-fault accident.
The Law — C.R.S. § 10-4-628(1)(a)No insurer shall cancel; fail to renew; refuse to write; reclassify an insured under; reduce coverage under; or increase the premium for any complying policy because the applicant, insured, permissive user, or any resident of the household of the applicant or insured has had an accident or accidents that are not the fault of such named applicant, insured, household member, or permissive user.
Colorado Revised Statutes § 10-4-628(1)(a)
In plain English: your insurance company cannot penalize you — through higher rates, canceled coverage, reduced benefits, or any other adverse action — simply because you were involved in an accident that was not your fault.
“Being the victim of someone else’s negligence should never cost you your insurance coverage or your current premium.”
What Exactly Is Prohibited?
Under § 10-4-628, after a not-at-fault accident, the law prohibits your insurer from taking any of the following actions against you or anyone in your household:
- Canceling your policy
- Failing to renew your policy at renewal time
- Refusing to write or continue your coverage
- Reclassifying you into a higher-risk category
- Reducing your coverage limits or benefits (unless it’s part of a commissioner-filed general reduction)
- Increasing your premium (unless it’s part of a commissioner-filed general rate increase)
Notice that the statute protects not just the named insured, but also permissive users of the vehicle and any resident of the household. That means if a family member living with you suffers a not-at-fault accident, your insurer cannot use that accident to penalize the entire household’s policy.
What Counts as “Not Your Fault”?
Colorado follows a modified comparative fault system, meaning fault can be shared among multiple parties in a crash. The question of whether an accident qualifies as “not your fault” under § 10-4-628 depends on the facts — the police report, witness statements, traffic camera footage, and other evidence all matter.
Classic examples of clear not-at-fault accidents include being rear-ended by another driver, being struck by a driver who ran a red light, or being hit by an uninsured motorist while you were operating your vehicle lawfully. If the evidence establishes the other driver caused the collision, your insurer has no business treating you as though you did anything wrong.
Important to KnowThe statute covers both you and members of your household. If your spouse, adult child, or any resident of your home has a not-at-fault accident, your insurer cannot use that accident to raise your rates, cancel your policy, or reduce your coverage.
What Can Your Insurer Still Do?
The statute does allow for some premium increases and coverage changes — but only when they are part of a general rate change or coverage adjustment that your insurer has filed with the Colorado Insurance Commissioner and that applies across the board to all policyholders. In other words, if every driver on your insurer’s books sees the same adjustment due to market conditions, that’s permissible. What is not permissible is singling you out because of a not-at-fault accident.
Insurers are also permitted to account for accidents that were your fault. If you were partially or fully responsible for a crash, the protections of § 10-4-628 do not apply to that accident.
What If Your Insurer Does Raise Your Rates?
If you believe your insurer has violated § 10-4-628 — by raising your premium, canceling your policy, reclassifying you, or reducing your coverage following a not-at-fault accident — you have the right to take action.
Under § 10-4-628(3), an insured who believes their insurer violated these protections can file a complaint with the Colorado Division of Insurance pursuant to § 10-4-629. The Division of Insurance has the authority to investigate the insurer’s conduct and enforce the statute.
Beyond the regulatory complaint process, if you’ve suffered financial harm as a result of your insurer’s improper conduct, you may have claims under Colorado’s insurance bad faith laws. An experienced Colorado insurance attorney can evaluate your situation and advise you on the best path forward.
The Bigger Picture for Accident Victims
Fear of rising Colorado car accident insurance rates is one of the most common reasons injured drivers hesitate to report crashes, file claims with their own insurer, or fully pursue the compensation they deserve. That hesitation can cost them. Medical bills go unpaid, uninsured motorist benefits go unclaimed, and injured drivers abandon legitimate claims.
Colorado lawmakers wrote this law specifically to remove that fear — at least in the not-at-fault context. You should never have to choose between protecting your health and your finances on one hand, and protecting your insurance rates on the other. When a crash wasn’t your fault, Colorado’s insurance rate protections stand between you and your insurer’s ability to punish you for it.
If you sustained injuries in a car accident that wasn’t your fault, the most important first step is understanding your rights — both against the at-fault driver and with respect to your own insurer. An experienced Colorado personal injury attorney can help you navigate both.
Injured in a Colorado Car Accident?
Our team represents injury victims across Colorado in third-party liability and car accident cases. We’ll help you understand your rights — including your rights under Colorado insurance law — at no cost to you.