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anti-stacking provisions

Anti-stacking provisions are intended to avoid the application of multiple sets of deductibles or multiple sets of limits to a single loss event.

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Additional Information

They are sometimes included in insurance policies covering exposures that may occur over long periods, triggering coverage under multiple policies. They stipulate that, in such an event, only one policy limit or one deductible (rather than the limit or deductible under each policy) applies to the occurrence. Anti-stacking provisions (or stacking provisions) may be addressed in a state's motor vehicle insurance statutes with respect to uninsured motorists (UM)/underinsured motorists (UIM) coverage. These provisions vary widely from one state to another; and where a state's legislators or court system has addressed the issue, the UM/UIM endorsements in the state are often modified to reflect the state's stance on the issue.

Related Terms

Stacking is the application of two or more policies' limits to a single occurrence or claim.

Interpolicy stacking is one form of "stacking"—the aggregation of multiple insurance coverages or...

Intrapolicy stacking is one form of "stacking" or the aggregation of multiple insurance coverages...