Understanding Your Coverage After a Collision with an Uninsured or Underinsured Driver
Getting into a car accident is stressful enough. But when you discover the at-fault driver has little to no insurance, the situation can become a financial and legal nightmare. In Idaho, carrying only the state minimum liability insurance can leave you vulnerable. This is where Uninsured and Underinsured Motorist (UM/UIM) coverage becomes your most critical asset. This guide will walk you through what UM/UIM is, how “stacking” policies can maximize your protection, and what Idaho law says about this complex but crucial insurance benefit.
What is Uninsured/Underinsured Motorist (UM/UIM) Coverage?
Simply put, UM/UIM coverage is insurance you buy for yourself to protect against irresponsible drivers. It’s an addition to your own auto policy that steps in when the person who caused the accident can’t cover your damages.
Uninsured Motorist (UM) Coverage
This portion of your policy applies when you are hit by a driver who has no auto insurance at all, or in a hit-and-run incident where the driver cannot be identified. UM coverage can help pay for medical bills, lost wages, and other injury-related damages.
Underinsured Motorist (UIM) Coverage
This coverage is for situations where the at-fault driver has insurance, but their policy limits are too low to cover the full extent of your injuries and losses. For example, if your medical bills are $80,000 but the at-fault driver only has a $25,000 liability limit, your UIM coverage can help bridge that $55,000 gap.
Why UM/UIM is Crucial for Idaho Drivers
Idaho’s minimum liability insurance requirements are relatively low: $25,000 per person for bodily injury, $50,000 per accident, and $15,000 for property damage. In the event of a serious accident, a $25,000 limit can be exhausted quickly by a single emergency room visit, leaving you with overwhelming debt. While Idaho has one of the lowest rates of uninsured drivers in the country, with about 6.4% of motorists on the road without coverage, that still represents thousands of drivers posing a significant financial risk to others. Under Idaho Code § 41-2502, insurers are required to offer you UM/UIM coverage, and you must reject it in writing if you don’t want it. It is highly recommended that you never reject this vital protection.
The Key Concept: What is “Stacking” Insurance Policies?
“Stacking” is a term used to describe combining the UM/UIM coverage limits from multiple vehicles or policies to create a larger pool of available funds after an accident. This can dramatically increase the compensation you’re able to recover. There are two primary types of stacking:
- Intra-policy Stacking: This involves combining the coverage limits for multiple vehicles that are all insured under a single policy. For example, if you have three cars on one policy, each with $50,000 in UIM coverage, stacking them could give you access to a total of $150,000 in UIM benefits.
- Inter-policy Stacking: This refers to combining the UM/UIM coverage from two or more separate insurance policies. For instance, if you have a policy on your car and are also covered under a family member’s policy, you may be able to stack the UIM limits from both.
Idaho’s Stacking Laws: What You Need to Know
This is where things get complicated. While Idaho law generally permits stacking in certain situations, insurance companies don’t make it easy. Most policies contain “anti-stacking” clauses specifically designed to prevent you from combining coverage limits. This language essentially states that the maximum amount the insurer will pay is the limit shown for one vehicle, regardless of how many vehicles or policies you have.
However, these anti-stacking provisions are not always enforceable. The Idaho Supreme Court has, in some cases, ruled that if the policy language is ambiguous or confusing to the average policyholder, it can be overturned in favor of the insured. For instance, in a notable case, the court determined that a confusing clause allowed for stacking despite the insurance company’s intent. Challenging an anti-stacking clause requires a deep understanding of Idaho case law and insurance contract interpretation, which is why facing insurance disputes often requires professional legal help.
How Shep Law Group Can Help in Boise and Meridian
If you’ve been in an accident with an uninsured or underinsured driver in Boise, Meridian, or anywhere in Ada and Canyon Counties, you shouldn’t have to fight the insurance company alone. Insurance policies are complex legal documents written to protect the company’s bottom line. At Shep Law Group, we level the playing field.
Our experienced personal injury attorneys know how to dissect policy language, identify ambiguous anti-stacking clauses, and build a strong case to maximize your recovery. We fight to ensure you receive the full compensation you are entitled to under your policy, so you can focus on healing.
Did You Know? Quick Facts
- Idaho is a “fault” state for car accidents, which means the driver who caused the crash is financially responsible for the damages.
- The minimum liability coverage in Idaho (25/50/15) has not changed in years, even as medical and repair costs have skyrocketed.
- Even if an “anti-stacking” clause seems clear, recent Idaho court rulings may provide avenues to challenge its validity, particularly in cases involving minimum limits policies.
Don’t Get Left with the Bill
An accident with an uninsured or underinsured motorist can have devastating financial consequences. Don’t assume the insurance company’s initial offer or denial is the final word. You have rights, and you may be entitled to far more than you think.
Frequently Asked Questions (FAQ)
Is stacking UM/UIM coverage allowed in Idaho?
While Idaho law permits stacking in principle, most insurance policies include “anti-stacking” language to prohibit it. However, the enforceability of this language can often be challenged in court if it is deemed ambiguous, giving policyholders a potential path to stack their coverage.
How do I know if my policy has an anti-stacking clause?
You must read the full text of your insurance policy, specifically the sections related to UM/UIM coverage and the “Limits of Liability.” This language is often dense and confusing. If you are unsure, an experienced attorney can review your policy for you.
Isn’t the at-fault driver’s insurance supposed to cover my bills?
Yes, in a fault state like Idaho, the at-fault driver is responsible. However, if they have no insurance (uninsured) or their policy limits are too low to cover your damages (underinsured), you must turn to your own UM/UIM policy to cover the shortfall.
What should I do immediately after an accident with an uninsured driver?
First, ensure everyone is safe and call the police to file a report. Gather as much information as possible about the other driver and any witnesses. Notify your own insurance company about the accident promptly and inform them that the other driver appears to be uninsured. Contact a personal injury attorney before agreeing to any statements or settlements.
Why do I need a lawyer to handle my UM/UIM claim?
When you file a UM/UIM claim, you are making a claim against your own insurance company. Their goal is often to pay out as little as possible. An attorney represents your interests, ensuring your insurer acts in good faith, properly values your claim, and explores every avenue for compensation, including challenging anti-stacking provisions.
Glossary of Terms
- Uninsured Motorist (UM) Coverage: Protects you if you’re in an accident with an at-fault driver who has no liability insurance.
- Underinsured Motorist (UIM) Coverage: Protects you if the at-fault driver’s liability limits are not enough to cover your injury-related expenses.
- Stacking: The practice of combining UM/UIM coverage limits from multiple vehicles or policies to increase the total amount of available insurance money.
- Anti-Stacking Provision: A clause in an insurance policy that explicitly prohibits the stacking of coverage limits.
- Declarations Page: The page(s) at the front of your insurance policy that summarizes your coverages, limits, and deductibles.
- Liability Coverage: Insurance that pays for the other party’s damages when you are at fault in an accident. It does not cover your own injuries.


