Interactive: Corporate Tax Returns and Audits Interactive Application Individual Tax Returns and Audits Interactive Application Corporate Returns: Audit rates for largest corporations Audits of "passthrough entities" (partnerships and S-corporations) Audits of corporations Corporate share of federal income tax collections Individual Returns: Individual Tax Returns and Audits Interactive Application Audits of individual income tax returns IRS results in document matching and in finding math errors on returns Collection Enforcement: Levies, liens and seizure activity resuming IRS delinquent return investigations