How does traditional reduce UM coverage offset the at-fault driver’s policy in Georgia?


Traditional uninsured motorist coverage, often labeled “reduced-by” coverage, treats the at-fault driver’s liability payment as a credit against the insured’s UM limit rather than as money added to it. The offset is the defining feature of this older form of coverage, and understanding it explains why a reduced-by policy can pay less than its stated number suggests.

The offset in operation

Under reduced-by coverage, the UM limit sets a ceiling on the combined recovery from the at-fault driver’s liability insurance and the insured’s own UM coverage together. The liability payment is subtracted from the UM limit, and the UM coverage pays only the remainder. The at-fault insurer’s contribution effectively occupies part of the same space the UM limit covers, instead of stacking beneath it.

Take a claimant with 50,000 dollars of reduced-by UM and damages above that amount, injured by a driver carrying 30,000 dollars in liability coverage. The 30,000 dollar liability payment is credited against the 50,000 dollar UM limit, so the UM coverage contributes about 20,000 dollars. The total from both sources is the 50,000 dollar UM limit, not 80,000 dollars.

When the offset leaves nothing

The offset can shrink or even eliminate the UM benefit. If the at-fault driver’s liability limit equals or exceeds the reduced-by UM limit, the credit may consume the entire UM coverage, leaving no additional recovery from it regardless of how large the actual damages are. This is the central drawback of reduced-by coverage: it provides the most help when the at-fault driver has little or no insurance, and the least when that driver carries limits close to the insured’s own.

Why a driver might still hold it

Reduced-by coverage exists because it is generally cheaper than add-on coverage, and Georgia permits an insured to choose it. Points worth keeping in mind:

  • The premium savings come at the cost of a lower effective ceiling on recovery.
  • The declarations page and policy election show whether coverage is reduced-by or add-on.
  • A driver concerned about the offset can ask the insurer about switching to add-on coverage at renewal.

The bottom line

Reduced-by UM coverage offsets the at-fault driver’s liability payment against the insured’s UM limit, so the limit caps the total from both sources combined. The larger the at-fault driver’s liability coverage, the smaller the remaining UM benefit, and a high enough liability limit can erase it entirely. That trade-off is the price of the lower premium this traditional form carries.


This article is for general educational and informational purposes only and is not legal advice. It does not create an attorney-client relationship, and Georgia law may change. For advice about a specific situation, consult a licensed Georgia personal injury attorney.

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