Systems, methods, and computer program products are provided for determining risk. In one exemplary embodiment, there is provided a method for determining risk. The method may include receiving historical information relating to tax return data of a taxpayer. The method may also include updating one or more profiles associated with the historical information. The method may also include receiving current information relating to tax return data of the taxpayer. The method may also include querying the updated historical information based on the received current information. The method may further include processing historical information, received in response to the querying, together with the current information to generate one or more risk scores.