Form 7004 instructions: how to fill it out (plain English)

When is Form 7004 due?

Generally, Form 7004 must be filed on or before the due date of the return being extended. Special timing rules apply to certain foreign corporations and to certain corporations and partnerships qualifying under Treasury Regulation §1.6081-5. Calendar-year dates for the 2027 season, already adjusted for weekends and legal holidays:

Fiscal-year filers: the 15th day of the 3rd month after year-end for Forms 1065 and 1120-S, the 4th month for Forms 1120 and 1041. Form 7004 generally must be filed by the applicable extension-request deadline. A timely electronically filed extension that is rejected may qualify for the IRS e-file transmission perfection period.

What is Part I of Form 7004 asking?

Part I asks for a two-digit form code that tells the IRS which return you are extending — one code, nothing else. An LLC uses the code for the return it is taxed on (Form 1065, 1120-S, or 1120); there is no code for "LLC." The common codes are below; the full list is printed on the form.

In our wizard you choose the return by name and the code is filled in for you.

What is Part II asking?

Part II asks for your tax year and, when applicable, a proper estimate of the tax the return will show; every filer completes Part II. Field by field:

• Foreign corporation with no U.S. office. Check this box if the filer is a foreign corporation with no office or place of business in the United States. Form 7004 generally is due by the 15th day of the sixth month after the close of the tax year for these filers.
• Common parent of a consolidated group. For the parent corporation of a group filing one consolidated return. If checked, attach a statement listing the name, address, and EIN (Employer Identification Number) of each member the extension covers.
• Regulations section 1.6081-5 filers. Certain partnerships that keep their books and records outside the United States and Puerto Rico, foreign corporations with a U.S. office or place of business, certain domestic corporations that transact business and keep their books and records abroad, and certain domestic corporations whose principal income is from U.S. territories may qualify for an automatic extension to file and pay to the 15th day of the sixth month after year-end. If additional filing time is needed, line 4 of Form 7004 is used to request additional time to file, not additional time to pay.
• Tax year. The calendar year, or a fiscal year's beginning and ending dates. It must match the return you will file.
• Short tax year reason. If the period is under twelve months, check why: initial return, final return, change in accounting period, consolidated return to be filed, or other (attach an explanation).
• Tentative total tax. Your estimate of the total tax the return will show. See the next section.
• Total payments and credits. Estimated tax payments already made, any prior-year overpayment applied to this year, and credits you expect to claim.
• Balance due. Tentative total tax minus payments and credits. Form 7004 does not extend the time to pay. Pay any amount due by the applicable payment deadline using a payment method permitted for the underlying return; EFTPS is one electronic payment option.

Most small businesses leave the three checkboxes blank. Our wizard collects the return type, EIN, legal name, address, tax year (calendar or fiscal, with any short-year reason), the checkboxes that apply to your return, and the same three tax figures.

How do I estimate tentative total tax?

Enter a good-faith estimate of the total tax the return will show; for pass-through entities it is usually zero. Partnerships and S corporations generally pay no entity-level income tax (tax owed by the business itself), so all three tax fields are often zero. Entity-level tax can apply in particular circumstances, so the filer should determine the tentative tax applicable to the specific return being extended. C corporations estimate from year-to-date books and last year's return at the flat 21% corporate rate; estates and trusts estimate the fiduciary income tax the Form 1041 will show. It need not be exact, but it must be a real attempt: the IRS can treat an extension as invalid if the tax was not properly estimated.

Do I need to sign Form 7004 or attach anything?

No. Form 7004 has no signature line, and nothing is attached unless you checked the consolidated-group box (the member list) or chose "other" as the short-year reason (the explanation). An e-filed Form 7004 is transmitted by an Authorized IRS e-file Provider under its own credentials. If you also authorize an electronic funds withdrawal for the balance due, the provider keeps a signed Form 8878-A as your payment authorization. The IRS sends no approval letter — it contacts you only if the extension is denied — so keep the acknowledgment as proof.

Where do I send Form 7004, or how do I e-file it?

Most businesses e-file Form 7004 through tax software or an Authorized IRS e-file Provider and receive an electronic acknowledgment, usually within a few hours. A paper Form 7004 goes to the IRS service center listed in the "Where To File" table of the Form 7004 instructions; the address depends on the return and the state of your principal office. An electronically filed extension generates an electronic acknowledgment. If Form 7004 is mailed, retain documentation establishing timely mailing, such as the applicable postmark and any certified-mail, registered-mail, or approved private delivery service records.

Why do Form 7004 extensions get rejected?

The most common reason is a business name or EIN that does not match IRS records. The usual causes:

• Name and EIN mismatch. Use the exact legal name from your EIN confirmation letter — not a DBA or an abbreviation.
• Wrong form code. An LLC taxed as an S corporation that picks the Form 1065 code, for example.
• Wrong tax period. A year-end that does not match what the IRS has on file for the entity.
• Duplicate submission. A second Form 7004 for the same EIN and period is rejected; the first accepted one stands.
• Filed after the deadline. There is no late extension.

A timely electronically filed Form 7004 that is rejected may be corrected and retransmitted during the IRS e-file transmission perfection period. If the corrected extension is accepted within that period, the filing can retain the timeliness of the original transmission. If the IRS rejects an extension we filed and we cannot get it accepted, we refund the fee.

Do I need a separate Form 7004 for each return?

Yes. File one Form 7004 per return and per entity — a company with two EINs files two. The exception is a consolidated group, where the parent's Form 7004 and member list cover the group. Form 7004 extends only the return identified on the form; it does not extend the returns of the entity's owners. Individual owners who need additional time to file Form 1040 generally use Form 4868, while owners that are themselves entities follow the extension rules applicable to their own returns. Eligible exempt organization returns generally use Form 8868 rather than Form 7004; Form 990-N cannot be extended. State extensions are separate; we file federal only.

Let us fill it in

Our Form 7004 wizard asks for the return you file, EIN, legal name, address, tax year, and the three tax figures, then fills in the form code and e-files for a flat $9.95. We email you when the IRS accepts it. For calendar-year filers in the 2027 season, file by Monday, March 15, 2027 (Forms 1065 and 1120-S) or Thursday, April 15, 2027 (Forms 1120 and 1041). Your EIN is encrypted at rest, never stored in your browser, and shown only masked after filing.

Form 7004 FAQ

Sources

• Instructions for Form 7004: the due date, the six-month and 5½-month extensions, each Part II line, no signature, electronic payment, and that the IRS writes only if it disallows an extension
• Publication 4164, Modernized e-File (MeF) Guide for Software Developers and Transmitters (PDF): the e-file transmission perfection period for a rejected extension
• Form 7004 (PDF): every form code in the table and the short-year reasons
• About Form 7004: the extension is automatic
• Publication 509, Tax Calendars: due dates for Forms 1065, 1120-S and 1120, and the weekend and holiday rule
• Instructions for Form 1041: Form 1041: the 15th day of the 4th month
• Instructions for Form 1120-F: a foreign corporation with no U.S. office: the 6th month
• Instructions for Form 1120: the 21% corporate rate
• Instructions for Form 1065: a partnership pays no income tax of its own
• Instructions for Form 1120-S: the entity-level taxes an S corporation can owe
• About Form 8878-A, IRS e-file Electronic Funds Withdrawal Authorization for Form 7004: the electronic funds withdrawal authorization
• About Form 8868: exempt organizations use Form 8868
• IRS: Limited liability company (LLC): which return an LLC files
• IRS: Failure to pay penalty: the failure-to-pay penalty
• IRS: Quarterly interest rates: interest on unpaid tax