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About Form 1120-S, U.S. Income Tax Return for an S Corporation

Information about Form 1120-S, U.S. Income Tax Return for an S Corporation, including recent updates, related forms, and instructions on how to file.

Form 1120-S PDF
PDF version of Form 1120-S.
Instructions for Form 1120-S PDF
Instructions explaining how to file Form 1120-S.
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