UM / UIM coverage · Delaware

Delaware UM/UIM coverage: required at 25/50 minimum.

Authority: Del. Code tit. 18 § 3902. Stacking treatment: limited. Personal-injury filing deadline still applies: 2 years from the date of injury.

Verified 2026-05-16 Informational only

Why UM/UIM coverage matters in Delaware

When the driver who caused your Delaware crash has no insurance , or has only the state-minimum policy and your injuries blow through it , the only money left on the table is on your own policy. That money comes from UM/UIM coverage.

UM coverage is mandatory in Delaware. The statutory minimum is 25/50 per the requirements of Del. Code tit. 18 § 3902. Insurers must include the coverage in every policy issued or renewed in the state.

UIM coverage: when the at-fault driver has too little insurance

Underinsured-motorist (UIM) coverage activates when the at-fault driver has SOME insurance but not enough. Delaware drivers carrying UIM at $300,000, hit by a driver with the $25,000 state-minimum policy, can collect the difference (up to UIM limits) from their own carrier after settling with the at-fault liability insurer.

Stacking UM/UIM limits in Delaware

UM stacking , the ability to combine UM coverage across multiple vehicles on the same policy or across multiple policies , is treated differently in every state. Delaware's rule on stacking: limited. Stacking dramatically increases available coverage in households with multiple insured vehicles.

Common procedural pitfalls

Two recurring pitfalls in Delaware UM/UIM claims: (1) failing to give the carrier prompt notice (every UM policy includes a notice condition; late notice can excuse coverage), and (2) settling with the at-fault liability carrier without first notifying the UM/UIM carrier (which can extinguish subrogation and trigger a coverage forfeiture).

Hit-and-run claims in Delaware

A Delaware hit-and-run victim turns to their UM coverage when the at-fault driver is unidentified. The policy typically requires either physical contact between the vehicles or independent corroborating evidence (eyewitness testimony, surveillance video) before a phantom-vehicle claim is paid.

The UM/UIM claim process in Delaware

Delaware claim procedure is deceptively simple on the surface: report the loss, get treated, demand compensation. In practice, every step contains decisions that affect the eventual recovery. Whether to give a recorded statement, which medical providers to use, when to submit the demand, how to value pain and suffering, when to file suit , each is a strategic decision rather than a routine clerical one. The carriers know this; the plaintiff usually does not.

Delaware insurance carrier landscape for UM claims

The carriers operating in Delaware apply different claim-handling protocols depending on the policy type, the insured's tenure, and the claim severity. Soft-tissue claims under $25,000 typically go to a fast-track adjuster; claims over that threshold and any with permanent-injury indicators move to a senior adjuster or a litigation-prep team. Knowing which adjuster handles which case type helps plaintiffs' lawyers route demands to the right person.

Evidence that wins Delaware UM/UIM disputes

Building a winning Delaware case starts with documentation. The most successful plaintiffs are those who, within the first 72 hours, take photographs of every visible injury, save every emergency-room discharge document, write a contemporaneous narrative of the incident, and identify every potential witness. The Delaware rules of evidence reward contemporaneous documentation , a written note made the day of the incident carries far more weight at trial than a recollection three years later.

Real-world Delaware UM/UIM case patterns

Real Delaware case patterns illustrate the legal rules. A typical scenario: a driver is rear-ended at a red light in a Delaware intersection, sustains a soft-tissue cervical strain plus a more serious lumbar disc protrusion that requires steroid injections and eventually a microdiscectomy. The defendant's insurer offers $15,000 pre-suit; the case settles at $185,000 after the demand package is upgraded with the surgical records and a future-care report from a board-certified orthopedist. The decisive evidence is the gap between the conservative-treatment phase and the surgical phase.

Mistakes that reduce Delaware UM/UIM recovery

The most common mistakes Delaware injury plaintiffs make are: (1) giving a recorded statement to the at-fault carrier without counsel, (2) signing medical authorizations that are broader than the case requires, (3) settling the property-damage claim and not realizing it can affect the bodily-injury claim, (4) waiting too long to seek treatment (creating "gap-in-treatment" arguments for the defense), and (5) posting about the incident or their injuries on social media. Each of these can substantially reduce settlement value.

Delaware UM/UIM FAQ

Is UM coverage required in Delaware?

Yes. Delaware mandates UM coverage at a minimum of 25/50 under Del. Code tit. 18 § 3902.

What is the difference between UM and UIM in Delaware?

UM (uninsured motorist) pays when the at-fault driver has NO insurance. UIM (underinsured motorist) pays when the at-fault driver has SOME insurance but their limits are inadequate to cover your damages. Delaware policies typically bundle the two together, though limits and exclusions can differ.

Can I stack UM coverage in Delaware?

Delaware allows stacking with limitations or offsets. The specific rule (limited) depends on your policy language and recent appellate decisions.

What if the at-fault driver fled the scene?

UM coverage on your own policy applies to hit-and-run / phantom-vehicle scenarios in Delaware, typically subject to physical-contact or independent-corroboration requirements set by your policy.

Do I need to notify my insurer before settling with the at-fault driver?

Yes. Almost every Delaware UM/UIM policy requires written notice and consent before settling with the at-fault liability carrier. Settling without consent can void UM/UIM coverage by extinguishing the carrier\'s subrogation rights.

How long do I have to file a UM/UIM claim in Delaware?

The policy itself sets the notice deadline (often "as soon as practicable" or 30-180 days). The underlying personal-injury SOL is 2 years under Del. Code tit. 10 § 8119, and most courts treat UM claims as contractual , meaning the contractual limitations period in the policy may also apply.

Related Delaware topics

Sources

  1. Delaware UM/UIM statute: Del. Code tit. 18 § 3902.
  2. Auto-insurance framework: Del. Code tit. 21 § 2118.
  3. Personal-injury SOL: Del. Code tit. 10 § 8119.
  4. Industry data: Insurance Information Institute uninsured-driver statistics.

Last verified against primary sources on 2026-05-16.