Abstract: A method for evaluating the risk associated with an enterprise is presented. The method, based on a value-at-risk approach, uses a large number of scenarios to simulate the potential variation in the enterprise's future surplus capital based on its current assets and liabilities, and produces a probability distribution of future surplus capital. The scenarios are generated using quasi-Monte Carlo techniques in order to quickly achieve realistic scenarios. Each asset and each type of liability is modeled rigorously, and the effect of credit, interest rate, insurance, currency exchange, and equity risks on those assets and liabilities determined. The model also allocates surplus capital by division according to the risk associated with each division. The model is particularly well-suited for insurance companies.