Methods and systems are provided for estimating liability in an accident. In one embodiment, liability estimation in a vehicle accident may be based on a plurality of characteristics that describe the accident. The liability may be determined from characteristics including: conditions of vehicles in the accident, conditions of drivers in the accident, actions of drivers in the accident, and/or environmental conditions in the accident. The characteristics from an actual accident may be compared to those in a past or theoretical accident. Liability may be estimated from a preassigned liability associated with a nearest matching past or theoretical accident.