Uninsured Motorist Coverage: UM/UIM Explained

The Bottom Line

North Carolina requires every auto insurance policy to include uninsured and underinsured motorist coverage. UM/UIM is your financial safety net when the at-fault driver has no insurance or not enough insurance to cover your damages. The 2025 law changes made UIM coverage significantly more valuable by eliminating the liability setoff. But filing a UM/UIM claim is not as simple as calling your insurance company -- it can be just as adversarial as dealing with the other driver's insurer.

What Is UM/UIM Coverage in North Carolina?

Uninsured motorist (UM) coverage in NC is insurance that protects you when the at-fault driver has no insurance at all. Underinsured motorist (UIM) coverage is insurance that applies when the at-fault driver's policy limits are not enough to cover your damages. There are two distinct types, and they serve different purposes.

Uninsured Motorist (UM) Coverage kicks in when:

• The at-fault driver has no insurance at all
• The accident is a hit-and-run and the other driver cannot be identified
• The at-fault driver's insurance company is insolvent (went out of business)

Underinsured Motorist (UIM) Coverage kicks in when:

• The at-fault driver has insurance but their limits are not enough to cover your damages
• You have exhausted the at-fault driver's liability limits and still have remaining damages

NC Law Requires UM/UIM Coverage on Every Auto Policy

North Carolina is one of the few states that requires every auto insurance policy to include UM/UIM coverage. This is not optional.

Under this law:

• Your UM/UIM limits must be at least equal to your liability limits
• As of October 2025, the minimum UM/UIM coverage is 50/100/50 (matching the new liability minimums)
• The coverage applies to you, family members in your household, and anyone driving your vehicle with permission

Can You Reject UM/UIM Coverage?

Technically, yes -- but NC makes it very difficult. The rejection must meet strict requirements:

• It must be in writing
• It must be signed by the named insured (not just any household member)
• The insured must be informed of the coverage and its cost before rejecting
• The rejection form must comply with specific statutory requirements

The 2025 NC UIM Stacking Changes

The 2025 insurance law changes included a major improvement for accident victims regarding UIM coverage. Understanding what changed requires knowing how UIM worked before.

How UIM Worked Before 2025

Under the old rules, UIM coverage was subject to a liability setoff. This meant your UIM recovery was reduced by the amount the at-fault driver's insurance paid.

Here is how that worked:

• Your damages: $120,000
• At-fault driver's liability limit: $50,000 (they pay this amount)
• Your UIM limit: $100,000
• UIM recovery under old rules: $100,000 minus $50,000 (setoff) = $50,000
• Total recovery: $50,000 (liability) + $50,000 (UIM) = $100,000

You still had $20,000 in uncompensated damages even though your UIM coverage was $100,000.

How UIM Works After 2025

The new law eliminated the liability setoff for policies issued or renewed after the effective date. Now UIM coverage stacks on top of the liability recovery.

Using the same numbers:

• Your damages: $120,000
• At-fault driver's liability limit: $50,000 (they pay this amount)
• Your UIM limit: $100,000
• UIM recovery under new rules: up to $100,000 (no setoff)
• Total recovery: $50,000 (liability) + $70,000 (UIM, capped at remaining damages) = $120,000

Vehicle Stacking

Separate from the liability setoff change, there is also the question of vehicle stacking -- combining UIM coverage from multiple vehicles on the same policy.

If you have two cars on your policy, each with $100,000 in UIM coverage, vehicle stacking would let you access up to $200,000 in UIM coverage for a single accident.

However, NC allows insurers to include anti-stacking provisions in their policies. Whether you can stack across vehicles depends on your specific policy language. Review your policy or ask your agent about stacking provisions.

How to File a UM/UIM Claim in North Carolina

Many people assume that filing a claim with their own insurance company will be a friendly, straightforward process. It is not. This is one of the most important things to understand about UM/UIM coverage.

Your Own Insurance Company Is Not on Your Side in UM/UIM Claims

When you file a UM/UIM claim, your insurance company is paying out of their own funds. They have a direct financial interest in minimizing what they pay you. This means they will:

• Investigate the accident just as thoroughly as a third-party insurer
• Argue contributory negligence if there is any evidence you share fault
• Dispute the severity of your injuries and whether they are related to the accident
• Challenge your medical bills as excessive or unnecessary
• Hire their own medical experts to review your treatment
• Offer low settlements and expect you to negotiate

The UM/UIM Claim Process

For a detailed practical walkthrough of the UM/UIM claim process -- including the critical consent-to-settle procedure and common mistakes that destroy claims -- see our UM/UIM claim process guide.

Here is what the process typically looks like:

1. Exhaust the at-fault driver's liability coverage (for UIM claims). You generally must accept the at-fault driver's policy limits before you can file a UIM claim. For UM claims, you file directly with your insurer.

2. Notify your insurer. Report the claim to your own insurance company. Most policies require prompt notice.

3. Your insurer investigates. They will request your medical records, accident documentation, and may take a recorded statement. Approach this with the same caution you would use with the other driver's insurer.

4. Negotiation. Your insurer makes an offer. You can negotiate. This process can take weeks or months.

5. Dispute resolution if needed. If you cannot agree on the value, you may proceed to arbitration or litigation.

Arbitration vs. Litigation for UM/UIM Disputes

When you and your insurer cannot agree on the value of your UM/UIM claim, there are two primary paths to resolution.

Arbitration

Most NC auto insurance policies include an arbitration clause for UM/UIM disputes. Arbitration involves:

• A neutral arbitrator (or panel of three arbitrators) reviews the evidence
• Both sides present their case, similar to a trial but less formal
• The arbitrator issues a binding decision
• The process is typically faster and less expensive than a full trial

Litigation

You also have the right to sue your own insurance company over a UM/UIM dispute. Litigation involves:

• Filing a lawsuit in NC court
• Full discovery process (depositions, document production, expert witnesses)
• Potential trial before a judge or jury
• The process is longer and more expensive but may yield a higher recovery for complex or high-value claims

How Much UM/UIM Coverage Should NC Drivers Carry?

North Carolina requires UM/UIM limits to match your liability limits, with the minimum now at 50/100/50. But should you carry more?

Consider these facts:

• About 7% of NC drivers are estimated to be uninsured
• Many insured drivers carry only the minimum coverage
• A single surgery can cost $50,000 to $250,000 or more
• Lost wages for serious injuries can reach tens of thousands of dollars
• The cost difference between minimum and higher UIM limits is often surprisingly small -- typically $50 to $200 per year for a significant increase

Carrying UIM limits of $100,000/$300,000 or higher provides substantially more protection. Given the 2025 stacking changes that make UIM more valuable, increasing your limits is one of the most cost-effective ways to protect yourself.

UM Coverage for Hit-and-Run Accidents in NC

If you are the victim of a hit-and-run accident and the other driver cannot be identified, your UM coverage is your primary source of recovery. NC law treats hit-and-run drivers as uninsured motorists.

However, there are specific requirements for hit-and-run UM claims:

• You must report the accident to police within a reasonable time
• You must demonstrate that contact was made with the other vehicle (for some policy provisions)
• You must be able to prove the other driver was at fault

Frequently Asked Questions

Frequently Asked Questions

Does North Carolina require uninsured motorist coverage?▾

Yes. North Carolina is one of the few states that mandates uninsured/underinsured motorist (UM/UIM) coverage on every auto insurance policy. Under N.C. Gen. Stat. 58-3-35, your UM/UIM limits must be at least equal to your liability limits. As of October 2025, the minimum is 50/100/50.

What is the difference between UM and UIM coverage in NC?▾

Uninsured motorist (UM) coverage applies when the at-fault driver has no insurance at all, or in hit-and-run situations where the other driver cannot be identified. Underinsured motorist (UIM) coverage applies when the at-fault driver has insurance but their limits are not enough to cover your damages.

Can I reject UM/UIM coverage in North Carolina?▾

It is possible but very difficult. NC law requires the rejection to be in writing, signed by the named insured, and the insured must be informed of the coverage and its cost. If the rejection does not meet all requirements, it is invalid and the coverage is deemed to exist at your liability limits. Courts scrutinize these rejections closely.

What changed about UIM stacking in NC in 2025?▾

The 2025 law changes eliminated the liability setoff for UIM claims on new and renewed policies. Previously, your UIM recovery was reduced by the amount the at-fault driver's insurance paid. Now, UIM coverage stacks on top of the liability recovery, meaning you can collect both the at-fault driver's liability limits and your full UIM limits.

Is filing a UM/UIM claim adversarial even though it is my own insurance?▾

Yes. Many people are surprised to learn that their own insurance company will investigate and potentially dispute their UM/UIM claim just as aggressively as a third-party insurer would. Your insurer may argue contributory negligence, dispute the severity of your injuries, or challenge causation. They are paying out of their own pocket, so their financial interest is to minimize the payout.

How do I resolve a dispute with my insurer over a UM/UIM claim in NC?▾

NC policies typically include an arbitration clause for UM/UIM disputes. Arbitration involves a neutral third party (or panel) reviewing the evidence and making a binding decision. You can also file a lawsuit against your own insurer. Many attorneys recommend arbitration for smaller disputes and litigation for larger, more complex claims.