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