Underinsured Motorist (UIM)

What does underinsured motorist coverage mean in insurance?

Underinsured motorist coverage (UIM) steps in when a driver who caused your accident has liability coverage, but not enough of it to cover the full extent of your injuries or damages. A common misconception is that being hit by an insured driver means you are fully protected. Georgia’s minimum required liability coverage is only $25,000 per person, as detailed in our guide on Georgia auto minimum limits. If your medical bills, lost wages, and pain and suffering total $90,000, a driver carrying the state minimum leaves you $65,000 short, and UIM coverage bridges that gap.

How does underinsured motorist coverage work after a crash?

UIM works alongside the at-fault driver’s policy rather than replacing it. For example, if you are T-boned at an intersection by a driver who carries $25,000 in bodily injury liability and your injuries require surgery and three months out of work totaling $80,000, the at-fault driver’s policy pays its $25,000 limit and your UIM coverage, if you carry $100,000 in UIM limits, pays the remaining $55,000. Without UIM, you would need to pursue the at-fault driver personally, and most underinsured drivers have limited personal assets to collect against. UIM also pairs with uninsured motorist coverage, which handles drivers who carry no policy at all.

Why is underinsured motorist coverage especially important in Georgia?

UIM is most valuable in states with low minimum liability requirements, where a large share of insured drivers carry only the bare minimum. Georgia sits in that category. A meaningful share of Georgia drivers, estimates consistently range from 20 to 30 percent, carry only the state minimum or have no coverage at all. In that environment, UIM is not an optional add-on; it is the mechanism that protects you from the financial consequences of other people’s choices. For additional protection beyond auto policy limits, our guide on umbrella policy asset protection in Georgia explains how a personal umbrella layer can further extend coverage above auto limits.

What is the difference between offset and add-on UIM in Georgia?

Georgia follows an offset approach to UIM rather than an add-on approach in most standard policies. Under offset, your UIM limit must exceed the at-fault driver’s liability limit before your UIM coverage activates, and the at-fault driver’s payment reduces what your insurer owes. Some policies offer add-on UIM, where your limit applies on top of the at-fault driver’s payout rather than being offset by it. The distinction matters when selecting limits. Your declarations page shows which structure your policy uses.

Does stacking UIM limits apply in Georgia?

Stacking is an enhancement available in some states that allows you to multiply your UIM limits across multiple vehicles on the same policy. For example, if you carry $100,000 UIM and have three vehicles, a stacked policy can provide up to $300,000 in UIM coverage per occurrence. Georgia allows stacking in certain circumstances; the premium difference is typically modest relative to the coverage increase it provides. Understanding how your deductible interacts with UIM payouts also affects your net recovery after a claim. A coverage review can help determine the right UIM limit for your situation and whether stacking or add-on UIM is available on your policy.