What Is Stacked Uninsured Motorist Coverage?

Most drivers in Iowa carry car insurance, but far fewer understand all the protections built into their policy. Uninsured motorist coverage is one of them. It's designed to protect you when the at-fault driver has no insurance or not enough of it to cover your losses after a serious accident.

Stacked insurance takes that protection a step further. It allows drivers to combine coverage limits across multiple vehicles or policies, which can increase the compensation available after a crash.

Stacked UM coverage and stacked coverage generally aren't well understood, and Iowa has its own rules around them. Keep reading to find out what they mean and why they matter.

What Is Uninsured and Underinsured Motorist Coverage?

UM coverage, or uninsured motorist coverage, protects you when the at-fault driver has no insurance at all. UIM coverage, or underinsured motorist coverage, applies when the at-fault driver has insurance, but their policy limits aren't enough to cover your full losses.

The key difference between the two is that an uninsured driver triggers UM, while an underinsured driver triggers UIM. That said, both coverages can pay for:

• Medical expenses

• Future medical bills

• Lost wages

• Pain and suffering

After a serious collision, medical costs add up quickly. An uninsured or underinsured driver can leave you in a difficult financial position. In such situations, having UM coverage and UIM coverage can protect you financially. Tom Fowler Law can also help with the question of should i get a lawyer for a car accident that wasn't my fault?

What Does "Stacking" Mean in Auto Insurance?

Stacking means combining the UM/UIM limits from more than one vehicle or policy to increase the total coverage available after an accident.

If you have two vehicles on your policy, each with $25,000 in UM coverage, stacking would allow you to combine those limits and access $50,000 instead. That's the benefit of having stacked auto insurance.

It’s important to note that stacking typically applies to the bodily injury portion of UM/UIM coverage, not property damage. A stacked car insurance policy pays for your injuries, not vehicle repairs.

Policyholders seek higher coverage limits through stacking because serious accidents can lead to huge medical bills. More coverage offers greater financial protection. But it’s worth noting that stacked and unstacked insurance options aren't available everywhere, though, and the rules vary depending on your state and policy.

How Stacked Coverage Works

There are two types of stacking, and they include:

• Vertical stacking: This type of stacking lets you combine coverage limits across multiple vehicles on the same policy. For example, if you have two vehicles on one policy, each with $25,000 in UM coverage, vertical stacking lets you combine those for $50,000 total.

• Horizontal stacking: This type of stacking lets you combine limits across multiple policies or different policies entirely. If you have separate policies covering different vehicles, horizontal stacking puts those limits together.

With unstacked insurance, or unstacked UM coverage, you're limited to the coverage on the single vehicle involved in the accident. Unstacked auto insurance or unstacked car insurance is more common and often cheaper.

Stacked vs Unstacked Coverage - What to Know

Stacked coverage combines all of the limits on each vehicle, while unstacked insurance keeps them separate.

Coverage ultimately comes down to policy language. Many insurers include anti-stacking clauses that specifically prohibit combining limits.

Stacked and unstacked insurance availability also depends heavily on state law. Not all states allow stacking, and even in states that permit it, there are specific rules that govern stacked policies.

Does Iowa Allow Stacked Uninsured Motorist Coverage?

Unlike states like South Carolina, where stacking is allowed, Iowa, like many other states, including West Virginia, North Dakota, and South Dakota, does not typically allow stacking.

While Iota doesn’t outright ban stacking, it does permit insurance companies to add anti-stacking clauses into their contracts. Whether your car insurance policy allows stacking depends on what your contract actually says.

Talking to your insurance agent about choosing stacked coverage and whether your insurer offers stacked coverage is a reasonable starting point. But after a serious accident, having an attorney review your car insurance coverage is the better move. Making an informed decision about the right coverage starts with understanding exactly what your policy does and doesn't allow. For more information, these vehicle accident lawyers may be able to help.

How Stacking Can Increase Available Compensation

Let’s look at an example where an accident occurs on a highway in Iowa.

If you’re seriously injured in an accident caused by an uninsured driver and your medical bills total $60,000, how can stacking increase the available compensation?

Here’s how the payout would look under stacked and unstacked insurance coverage if you have two vehicles on your policy, each with $25,000 in UM coverage:

1. Unstacked - You're limited to $25,000 from the one car involved in the crash. That leaves $35,000 in unpaid bills.

2. Stacked - You combine both limits for $50,000 total. That's still not full compensation, but it's much closer.

Now consider an accident involving a catastrophic injury, where costs reach six figures. Higher limits through stacking can mean the difference between covering your losses and absorbing them yourself.

Why Stacked Coverage Matters After a Serious Injury Accident

Basic insurance coverage runs out faster than most people expect after a serious accident.

Catastrophic injury claims, extended medical treatment, rehabilitation expenses, lost earning capacity, and permanent disabilities can all add up to far more than a single policy limit will pay. When that happens, every additional dollar of available coverage matters.

That's where stacking becomes important. If you have more than one vehicle on your policy, stacked UM/UIM limits may give you access to greater protection than you'd otherwise have. It's not a guarantee of full recovery, but it can affect what's available to you.

Benefits and Potential Drawbacks of Stacked Coverage

Is stacked insurance worth the cost? It depends. There are several benefits and drawbacks to stacking all of your coverages, including:

Benefits:

• Potentially higher UM/UIM limits after a serious accident

• Additional financial protection when an at-fault driver's coverage falls short

• Access to greater compensation, particularly with catastrophic injuries

Drawbacks:

• Higher premiums, since stacked coverage typically costs more than unstacked coverage

• Possible anti-stacking restrictions in your policy that may limit or eliminate the benefit

• Coverage disputes with your insurance company over whether stacking applies

• Not available under every policy or in every situation

When Should You Speak with a Car Accident Lawyer?

If you've been in a car accident involving an uninsured driver and you're not sure what your car insurance policy actually covers, it’s best to reach out to an experienced lawyer. They can help with situations like does liability cover hit and run?

Stacking disputes can get complicated quickly, and insurance companies are notorious for creating hurdles. Fortunately, most car accident attorneys work on a contingency fee basis, which means that you don’t have to pay for anything unless the lawyer helps recover compensation.

There's no financial risk in getting a second opinion on your coverage after a serious car accident.

Questions About Stacked Coverage? Speak with an Iowa Car Accident Attorney!

Stacking issues come down to policy language and Iowa law. Every situation is different, and the details of your specific policy matter a lot.

If you've been seriously injured and you're not sure what coverage is available to you, Tom Fowler Law can help. We review UM/UIM claims and insurance disputes regularly, and we offer free consultations.

Reach out to Tom Fowler Law today to go over your policy and understand your options!