This version of the form is not currently in use and is provided for reference only. Download this version of Instructions for IRS Form 1120 for the current year.
This document contains official instructions for IRS Form 1120 , U.S. Corporation Income Tax Return - a tax form released and collected by the Internal Revenue Service (IRS), a subdivision of the U.S. Department of the Treasury. An up-to-date fillable IRS Form 1120 Schedule D is available for download through this link.
Q: What is IRS Form 1120?
A: IRS Form 1120 is the U.S. Corporation Income Tax Return.
Q: Who needs to file IRS Form 1120?
A: U.S. corporations, including S corporations, must file IRS Form 1120.
Q: What is the deadline for filing Form 1120?
A: The deadline for filing Form 1120 is usually the 15th day of the 4th month after the end of the corporation’s tax year.
Q: What information is required to complete IRS Form 1120?
A: Information required to complete Form 1120 includes the corporation's income, deductions, credits, and tax liability.
Q: Are there any penalties for not filing IRS Form 1120?
A: Yes, penalties may apply for not filing Form 1120, including late filing penalties and interest on unpaid taxes.
Q: Can IRS Form 1120 be filed electronically?
A: Yes, Form 1120 can be filed electronically using the IRS e-file system.
Instruction Details:
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