Quick answer
Umbrella insurance covers liability claims that exceed the limits of your underlying home and auto policies, bodily injury, property damage, and certain personal liability claims like libel or slander, once the underlying policy’s limit is exhausted. It doesn’t cover your own property or injuries, and it doesn’t replace underlying coverage, it sits on top of it.
What it covers in practice depends heavily on your specific exposures, pools, rental property, board seats, teen drivers, each of which we account for when sizing coverage during a full asset review.