# Form 1120

URL: https://pdf.net/pdf-forms/business-forms/form-1120
Category: Business Forms
Attributes: Official IRS form, Trusted by businesses, Filled annually

Form 1120 is used by corporations for reporting tax items and calculating the federal income tax owed to the IRS.

Get a fillable tax form to report income, gains, losses, deductions, and credits for your corporation. Our 1120 Form download makes it simple for you to fill out and file your corporate tax return each year.

## Versions

- 2025 — [download PDF](https://cdn.sanity.io/files/i16te7yp/production/6bac1a30f315fe0b49ec9be1c7e35c41138222bb.pdf)
- 2024 — [download PDF](https://cdn.sanity.io/files/i16te7yp/production/0511964a288ab62d8febae99deb37ccbadd4a5dc.pdf)

## How to Fill Out a 1120 Form?

Step 1: Gather your **financial records **and prior-year returns.

Step 2: Open the 1120 fillable form on **pdf.net **and enter your corporation’s information.

Step 3: Report your income, gains, losses, deductions, and credits **accurately**.

Step 4: **Compute total tax** using the schedules that apply to your corporation.

Step 5: **Review** all the entries and **sign** the form.

Step 6: Save and submit your Form 1120 **electronically** or by **mail filing**.

## Facts

### What Is a Form 1120?

A Form 1120, also known as the U.S. Corporation Income Tax Return, is used by domestic corporations for **reporting income, gains, losses, deductions, **and** credits**. They can also figure out their income tax liability with this PDF tax form.

### Who Is Required to Fill Out Form 1120?

**Every domestic corporation** must file Form 1120, even if it has no taxable income. This includes corporations in bankruptcy and those not actively conducting business.

### When Is Form 1120 Due for Submission?

Form 1120 is due for submission on the **15th day of the fourth month** after the end of its tax year. Those with a short year ending in June must file by the **15th day of the third month**.

### What Are the Penalties for Not Submitting the Form?

The penalty for not submitting the form is** 5% of unpaid tax per month**, up to 25%, with a minimum of $510 if over 60 days late. Late payment adds **0.5% per month**, and **interest** **applies** unless reasonable cause is shown.

### Where Do I File the 1120 Form?

You can file **electronically** using the IRS e-file system or **by mail**. If filing by mail, check the Form 1120 instructions for the correct address; it depends on your corporation's principal business location and whether payment is included.

## Related forms

- [Form 1065](https://pdf.net/pdf-forms/tax-forms/form-1065)
- [Form 1125-E](https://pdf.net/pdf-forms/business-forms/form-1125-e)
- [Form 7004](https://pdf.net/pdf-forms/tax-forms/form-7004)
- [Form 4562](https://pdf.net/pdf-forms/tax-forms/form-4562)
- [Form 8825](https://pdf.net/pdf-forms/tax-forms/form-8825)