1. A computer-implemented method for detecting tax refund fraud related to identity misrepresentation, the method comprising: receiving entity-supplied information comprising at least a name, social security number, and mailing address associated with a requested tax refund; querying one or more public or private databases with the entity-supplied information, wherein the one or more public or private databases are independent of a tax agency; receiving a plurality of independent information in response to the querying, wherein the plurality of independent information comprises one or more of: an indication of whether or not the entity is deceased; independent address information associated with the entity; address validity information associated with the entity-supplied information; one or more public records associated with the entity-supplied information; or no information; and determining, with one or more computer processors in communication with a memory, and based at least in part on a comparison of the entity-supplied information with the plurality of independent information, zero or more indicators of fraud comprising one or more of: a combination of information comprising: entity deceased within tax year or died within a timeframe of the tax year that would indicate a possible non-fraud tax refund request; and the entity-supplied mailing address does not match with any of the independent address information; entity-supplied mailing address includes an entity-supplied zip code having no record of association with one or more zip codes associated with the independent address information; entity-supplied mailing address having no record of association with any independent address information, including relatives address or associates address; and outputting, for display, the zero or more indicators of fraud.