A serious car accident can create medical bills, lost income, and long-term treatment costs that quickly exceed what most people expect. When another driver causes the crash, you may assume their insurance will cover those losses. But what happens when the at-fault driver carries insurance and the policy is simply not large enough to pay for the full impact of your injuries?
This situation is generally referred to as an underinsured motorist problem, and it is more common in California than many people realize. It becomes especially important when a car accident results in surgery, extended rehabilitation, permanent limitations, or substantial time away from work. In those situations, the value of an injury claim may exceed the amount available under the other driver’s liability policy.
When that happens, the at-fault driver’s insurance may be only one potential source of recovery. Understanding policy limits, underinsured motorist coverage, and other potentially responsible parties can help you avoid making important decisions before the full insurance picture is clear.
Why Insurance Policy Limits Matter After a Serious Accident
Every automobile liability policy has coverage limits, which establish the maximum amount an insurer will pay for covered claims under that policy. Under California Vehicle Code Section 16056, the minimum coverage a driver must carry is $30,000 for injury or death to one person, $60,000 for injury or death to more than one person in a single accident, and $15,000 for property damage. Those minimums were raised in 2025 under Senate Bill 1107, but many drivers on Los Angeles freeways still carry only that minimum, and a policy renewed before the change may still reflect the old $15,000 per person limit.
The difficulty is that serious injuries can cost far more than that. Someone who suffers a spinal injury, traumatic brain injury, multiple fractures, or another condition requiring surgery may face significant medical expenses, months of lost income, and future treatment needs. Pain, disability, and reduced earning ability may further increase the financial impact. If the injured person’s total losses substantially exceed the at-fault driver’s limits, the liability insurer is generally responsible only up to that limit.
That does not necessarily mean the injured person has no other options. It means the claim should be examined more carefully before assuming that the at-fault driver’s policy is the only available source of compensation.
Underinsured Motorist Coverage May Provide Additional Protection
Underinsured motorist coverage, commonly called UIM coverage, is designed for exactly this situation: the driver who caused the accident has insurance, but not enough to fully address the injured person’s damages. Under California Insurance Code Section 11580.2, insurers must offer uninsured and underinsured motorist coverage with every auto liability policy, and a driver can only decline it by rejecting it in writing. Many accident victims have this coverage and do not realize it, so reviewing your own declarations page is one of the first practical steps after a serious crash.
It is also important to understand how the math generally works. In California, UIM coverage typically pays the difference between your UIM limit and the amount recovered from the at-fault driver’s policy, rather than stacking on top of it. For example, if you carry $100,000 in UIM coverage and the at-fault driver’s insurer pays its $30,000 limit, your UIM claim may be worth up to $70,000, depending on your total damages. If your UIM limit is the same as or lower than the at-fault driver’s limit, UIM may provide nothing at all.
A UIM claim is made through your own insurance company, but that does not mean your insurer automatically pays whatever remains. Your insurer may still evaluate fault, medical evidence, the seriousness of the injuries, and prior payments, and disputes are often resolved through arbitration rather than a lawsuit. Careful documentation remains important even when dealing with your own carrier. The same policy may also include MedPay benefits, which can help cover medical expenses regardless of fault.
Other Insurance Policies and Responsible Parties May Be Involved
One of the most important steps in a serious injury case is identifying every potentially applicable source of coverage. The at-fault driver’s personal auto policy may not be the only policy connected to the accident. If the driver was performing work duties when the collision occurred, an employer or commercial policy may become relevant. Accidents involving rideshare drivers, delivery vehicles, or commercial trucks frequently involve additional layers of coverage that are not obvious at the scene.
Vehicle ownership can matter as well. The person driving may not be the vehicle’s owner, and the owner’s policy or a permissive-use provision may apply. In a multi-vehicle collision, several injured people may also be making claims against the same limited policy, which makes early investigation particularly important before available proceeds are exhausted.
Determining what coverage applies usually requires examining who owned the vehicle, who was driving, what that person was doing at the time, and whether another individual or business may share legal responsibility.
Personal Assets May Be Considered When Insurance Is Insufficient
Accident victims sometimes ask whether they can pursue the personal assets of a driver whose insurance is not enough to cover their injuries. In some circumstances, a legally responsible driver may remain personally liable for damages beyond what insurance pays. However, establishing legal responsibility and actually collecting additional money are separate issues.
A driver who carries only minimum coverage often has limited income or few assets available to satisfy a judgment. As a result, pursuing personal assets is typically evaluated from both a legal and practical perspective. A California personal injury attorney may investigate whether pursuing the individual driver is realistic while also looking for additional insurance coverage or other responsible parties, which is usually the more productive path.
Medical Evidence Is Critical in an Underinsured Motorist Claim
When injuries are serious enough to exceed available insurance limits, medical documentation becomes especially important. Records from hospitals, physicians, specialists, physical therapists, and other providers help establish the nature of the injuries, treatment received, prognosis, and future medical needs. Lost income must also be documented through pay records, employer statements, tax documents, and medical work restrictions.
For people facing long-term consequences, future damages may become a major part of the claim. Someone who may need additional surgery, ongoing therapy, or continuing care requires an evaluation that looks beyond today’s medical bills. Depending on the severity of the case, qualified medical, vocational, or financial experts may be needed to explain future treatment needs and economic losses.
Avoid Settling Before the Full Insurance Picture Is Clear
When an insurance company offers the full amount available under its driver’s policy, the offer can sound like the maximum possible recovery. In some cases, accepting the policy limit is appropriate. But a policy-limits payment does not mean all of your losses have been compensated, and the timing of that acceptance matters more than most people expect.
Under California law, settling with the at-fault driver and signing a release without your own insurer’s written consent can jeopardize your UIM claim, because the release may eliminate your insurer’s right to recover from the at-fault driver. Before accepting a policy-limits offer, it is important to confirm whether UIM coverage exists, notify your own carrier, and determine whether another policy or party may share responsibility. The California Department of Insurance publishes consumer guidance on auto claims, but the consent requirement is the kind of detail that is easy to miss without help.
Timing matters in another way, too. California generally allows two years from the date of injury to file a personal injury lawsuit, but UIM claims carry their own policy-based notice and demand requirements that can differ from that deadline, much like claims involving an uninsured driver. Once a settlement and release are finalized, reopening the claim later is usually impossible. That is why settlement decisions should be informed decisions, particularly when serious injuries are involved.
Frequently Asked Questions
Can I still recover compensation if the at-fault driver has very little insurance?
Possibly. The at-fault driver’s liability policy may be only one source of recovery. Depending on the circumstances, your own UIM coverage, MedPay benefits, employer or commercial insurance, other responsible parties, or the driver’s personal assets may also need to be evaluated.
Does underinsured motorist coverage pay whatever the other driver’s insurance does not?
Not automatically. In California, UIM coverage generally pays the difference between your UIM limit and what the at-fault driver’s insurer paid, and only up to your actual damages. Your insurer may still examine liability, medical evidence, and prior payments before determining what is owed.
Can I settle with the at-fault driver’s insurer and then file a UIM claim?
Only with care. Settling and signing a release without your own insurer’s written consent may jeopardize your UIM claim under California law. Notifying your carrier and getting consent before finalizing a policy-limits settlement is generally the safer approach.
Can I pursue the at-fault driver personally after insurance is exhausted?
Potentially. A driver may remain legally responsible for damages that exceed insurance coverage. Whether pursuing personal assets is practical depends on the driver’s financial situation, and it is usually evaluated alongside other sources of coverage rather than instead of them.
Will making a UIM claim raise my own insurance rates?
It depends on the insurer and the policy, but California’s rating rules generally limit surcharges to accidents where the policyholder was principally at fault. A UIM claim arising from another driver’s negligence is not the same as an at-fault accident on your record. Your agent can confirm how your specific carrier handles it.
Protecting Your Rights When Insurance Coverage Is Not Enough
Learning that the driver who caused your accident does not carry enough insurance can create additional uncertainty during an already difficult recovery. The important point is that one limited liability policy does not always represent the full picture. A careful investigation may identify UIM coverage, MedPay, employer or commercial insurance, or additional responsible parties, and strong medical and financial documentation can help establish the true impact of serious injuries.
At the Law Offices of Ramtin Sadighim, we help injured people throughout Los Angeles, the San Fernando Valley, and across California understand how insurance coverage affects their claim and what options may exist when the at-fault driver’s policy is insufficient. Our attorneys can review the applicable policies, investigate additional sources of coverage, communicate with insurers, and help you make an informed decision before accepting a settlement or signing a release.
If you were seriously injured in a California car accident and are concerned that the at-fault driver does not have enough insurance to cover your losses, contact the Law Offices of Ramtin Sadighim for a free consultation. Our firm handles personal injury matters on a contingency fee basis, meaning you pay no attorney fees unless compensation is recovered on your behalf.
Call us at 888.999.8744 or visit www.CaliAccidentAttorney.com to learn more.
Individualized care is our specialty at the Law Offices of Ramtin Sadighim. As an experienced Los Angeles personal injury attorney, Mr. Sadighim understands that every client, case, and circumstance needs a different approach for the best results.
