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C Corporations filing Form 1120 can request an automatic six-month filing extension by submitting Form 7004 by the original due date.
C corporations file Form 1120, the official U.S. Corporation Income Tax Return, which is due by April 15 for corporations that use the Calendar Year. For corporations that follow the fiscal year, the due date is the 15th day of the 4th month after the end of the fiscal year.
A c corporation that files Form 1120 can request extra time to file its federal corporate income tax return by filing Form 7004 on or before the original Form 1120 due date to get an automatic 6 months extension.
When filing a Form 1120 extension, use return code 12 on Part I, line 1 of Form 7004. This code indicates that the filing is for a c corp that files Form 1120.
Specialized corporate returns, including Forms 1120-F, 1120-H, 1120-L, 1120-PC, 1120-POL, 1120-REIT, and 1120-RIC, use different Form 7004 codes and should follow the filing rules for the applicable return.
Important Note: Form 7004 extends only the filing deadline. It does not replace Form 1120 and does not extend the time to pay tax.
Domestic corporations that use Form 1120 to report their income, gains, losses, deductions, credits, and to calculate their income tax liability can file Form 7004, whether or not they have taxable income, unless there is an exemption under section 501 or there is a special-return rule that applies.
A domestic LLC that elects to be treated as an association taxable as a corporation can also file Form 1120 and can use Form 7004 to request a filing extension.
Consolidated groups can also request an extension. But only the common parent or agent of the group can file Form 7004 to request an extension. When filing Form 7004 for a consolidated group, line 3 requires a list of the members with their name, address, and EIN. In some cases, a group member who files a separate return for a tax period shorter than the normal 12-month tax year and needs an extension cannot use the consolidated return rule. The member must file a separate Form 7004 for that return.
The general rule for extension filing is that Form 7004 must be filed by the original return due date.
Most C corporations have to file Form 1120 by the 15th day of the fourth month after the end of their tax year. For calendar year C corporations, the due date they have to follow is April 15.
Once Form 7004 is filed, the automatic 6-month extension moves the filing deadline to October 15 (for corporations that use the calendar year).
For certain C corporations with a tax year that ends on June 30 and starts before January 1, 2026, Form 1120 is due on the 15th day of the third month after year-end. When they file Form 7004, instead of 6 months, they get a 7-month automatic extension.
For tax years beginning after December 31, 2025, that transition rule does not apply. June 30 year-end corporations have to follow the standard fourth-month filing deadline and 6-month extension.
For this rule, a short tax year ending any time in June is treated as ending June 30.
April 15, 2028, falls on a legal holiday, so the deadline moved to the next business day.
To request a filing extension, the first step is to prepare the identifying, tax-period, and tax-estimate information.
To request a filing extension for Form 1120, start by confirming that the business has a Form 1120 filing requirement. Checking eligibility ensures that you are filing the correct form and using the correct Form 7004 Code 12 on Form 7004. Also, verify the corporation’s legal name, EIN, address, and tax period, including any fiscal-year or short-year dates that could have an effect on the filing deadline.
In this step, you enter all the required business information and tax period needed in Form 7004, including the short-tax-year reason when applicable. Add the tentative total tax on line 6, total payments and refundable credits on line 7, and the balance due on line 8. Include the consolidated-group information for a consolidated return.
Before submitting Form 7004 to get an automatic filing extension, review all the details, including the form code, tax year dates, and tax amounts. You can then submit Form 7004 through Tax1099’s online extension workflow.
After submission, retain the filing record and track the filing status through your Tax1099 dashboard.
Form 7004 is used by eligible C corporations to get extra time to file Form 1120. It extends the time to file the form, but it does not extend the time to pay federal income tax.
A C corporation should make a proper estimate of its tax and pay any balance due by the original Form 1120 due date. If tax is not paid on time, interest is chare on the unpaid tax, and a late-payment penalty may apply under the IRS rules.
A C corporation that was granted an automatic extension will not be charged a late-payment penalty if the tax shown on line 6, or the amount paid by the regular due date, is at least 90% of the tax shown on the return, and the remaining balance is paid by the extended due date. Though interest can still apply to the unpaid tax after the regular due date.
Lines 6 through 8 on Form 7004 report the estimated corporate tax, payments, credits, and any balance due.
Tax1099 provides a streamlined electronic filing experience for Form 7004 for C corporations that need more time to file Form 1120.
A C corporation that uses Form 1120 has to file Form 7004 n or before the original Form 1120 due date to request additional time to file.
The automatic extension granted after filing Form 7004 for qualifying C corporations is generally 6 months. There is a transition rule that offers a 7-month extension to C corporations with tax years ending June 30 and beginning before January 1, 2026.
No. Form 7004 extends the time to file, not the time to pay. Any applicable tax balance must be paid on or before the original Form 1120 due date.
When an LLC elects to be treated as an association taxable as a corporation and files Form 1120, it can use Form 7004 to request an extension.
If your C corporation files Form 1120, submit Form 7004 with code 12 by the applicable original return due date to request additional filing time. Pay any federal tax due by the original deadline.