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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 is used by corporations that elect to be S corporations to report income, deductions, gains, losses, etc.

Use Form 1120-S, U.S. Income Tax Return for an S Corporation, to report the income, gains, losses, deductions, credits, and other information of a domestic corporation or other entity for any tax year covered by an election to be an S corporation.

Use Form 1120-S, U.S. Income Tax Return for an S Corporation, to report the income, gains, losses, deductions, credits, and other information of a domestic corporation or other entity for any tax year covered by an election to be an S corporation.

Find out where to mail your completed form.

Review a table on Schedules K-1 Two Dimensional Bar Code Specifications for Form 1120S.

Electronic filing of Form 1120/1120-S/1120-F/1120-H for corporations.

Information about Form 8879-S, IRS e-file Signature Authorization for Form 1120S, including recent updates, related forms and instructions on how to file. A corporate officer and an electronic return originator (ERO) use this form when the corporate officer wants to use a personal identification number (PIN) to electronically sign an S corporation’s electronic income tax return and, if applicable, consent to electronic funds withdrawal.

Form 1120S - Test Scenario WorkNAllDay, Inc.

Form 1120S - Test Scenario Great Atomic Pyrotechnics & Design, Inc.

Form 1120S - Test Scenario 3 Tree Fixr Upper, Inc.