IRS Form 1120-S, U.S. Income Tax Return for an S Corporation, is a form filed with the Internal Revenue Service (IRS) to report the income, gains, losses, deductions, and credits of a domestic corporation or any other entity for any tax year covered by an election to be an S corporation.
The form was issued by the IRS and last revised in 2020. Corporations can electronically file Form 1120-S, as well as related forms, schedules, and attachments. You can download a fillable IRS Form 1120-S down below.
The difference between these two forms is that the Form 1120, U.S. Corporation Income Tax Return, is filed every year by corporations, and the 1120-S form is filed only by corporations that have elected the "S" status.
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