The invention provides systems and methods for risk assessment using a variable risk engine. A method for risk assessment may comprise setting an amount of real-time risk analysis for an online transaction, performing the amount of real-time risk analysis based on the set amount, and performing an amount of time-delayed risk analysis. In some embodiments, the amount of real-time risk analysis may depend on a predetermined period of time for completion of the real-time risk analysis. In other embodiments, the amount of real-time risk analysis may depend on selected tests to be completed during the real-time risk analysis.