IRS Form 1120S

2025 Printable Template

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Form last updated: 03/2024. Please verify this is the current version before use.

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What is a 1120S used for?

Form 1120S is used by S corporations to report income, gains, losses, deductions, credits, and to determine the income tax liability of the corporation. It is also used to report the corporation's financial activities to the IRS.

Who needs to fill out a 1120S form

S corporations are required to file this form.

How to fill out a 1120S online?

Follow these steps to complete your 1120S form online.

Step 1
Step 1
Access the form online and open it in the PDF editor.
Step 2
Step 2
Enter the corporation's name, EIN, and address.
Step 3
Step 3
Fill in the income, gains, losses, deductions, and credits sections with precise data.
Step 4
Step 4
Complete the tax computation section if applicable.
Step 5
Step 5
List the names and shares of shareholders.
Step 6
Step 6
Sign and date the form.
IRS Form 1120S Information

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Frequently Asked Questions

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Form 1120S is a tax return for S corporations to report their income, gains, losses, deductions, and credits.

Form 1120S is generally due by the 15th day of the third month after the end of the corporation's tax year, with an option to request an extension.

S corporations must file Form 1120S to report their financial activities.

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