To get a Form 5472 extension, file Form 7004 on or before the original due date of the corporate return that Form 5472 is attached to. That gives you an automatic six-month extension, with no IRS approval required. Because Form 5472 rides along with either Form 1120 or Form 1120-F, extending the underlying return extends the information return with it.
The Original Deadline You’re Extending From
Form 5472 is due when the corporate return it attaches to is due. A separate Form 5472 is required for each related party that had reportable transactions during the year.1Internal Revenue Service. Instructions for Form 5472
- Form 1120 filers: the 15th day of the fourth month after the tax year ends. For calendar-year corporations, April 15.
- Form 1120-F filers: the 15th day of the sixth month after the tax year ends. For calendar-year foreign corporations, June 15.
- Foreign-owned disregarded entities: file Form 5472 with a pro forma Form 1120 on the same schedule as a regular Form 1120 (April 15 for calendar-year filers).1Internal Revenue Service. Instructions for Form 5472
When one of these dates falls on a weekend or holiday, it shifts to the next business day. A timely Form 7004 pushes each of these deadlines out by six months, so a calendar-year Form 1120 filer moves from April 15 to October 15.
How to File Form 7004
Form 7004 requests an automatic six-month extension of the corporate return. No special approval is needed. As long as the form is complete and reaches the IRS on or before the original due date, the extension is granted automatically.2Internal Revenue Service. Instructions for Form 7004
What goes on the form:
- Identify the return being extended.
- Enter the corporation’s name, address, and EIN.
- Estimate any tax owed.
Most filers submit Form 7004 electronically, and the IRS accepts e-filing for nearly all return types.3Internal Revenue Service. Instructions for Form 7004
Extension Filing for Foreign-Owned Disregarded Entities
A foreign-owned disregarded entity cannot e-file Form 7004 through the normal system, because the DE is only treated as a corporation for information-reporting purposes. Its Form 7004 has to be faxed to the IRS at 855-887-7737 or mailed to the Ogden service center.1Internal Revenue Service. Instructions for Form 5472
The mailing address for both the Form 7004 and the eventual pro forma Form 1120 with Form 5472 attached is:
Internal Revenue Service
1973 Rulon White Blvd
M/S 6112, Attn: PIN Unit
Ogden, UT 84201
Two things to check before you send it:
- The DE must have its own EIN, separate from the foreign owner’s taxpayer identification number. If you don’t have one, obtain it before requesting the extension.
- The DE must establish and consistently use a Reference ID number for its 25% foreign owner or related party. The same number is used from year to year.
If you fax Form 7004, save the fax confirmation. The IRS does not send a receipt for faxed extension requests, so that confirmation page is your only proof of timely filing if a penalty notice shows up later.
When the pro forma Form 1120 is eventually filed, write “Foreign-owned U.S. DE” across the top. It only needs basic identifying information such as the entity name, address, and EIN.1Internal Revenue Service. Instructions for Form 5472
The Extension Doesn’t Extend Payment
Form 7004 gives you more time to file, not more time to pay. If the reporting corporation owes income tax, you still need to estimate and remit that amount by the original deadline. Interest and underpayment penalties apply to a late payment even when the filing extension is valid.
If You Need More Than Six Months
The six-month automatic extension is the only guaranteed one. There is no second automatic extension. If you can’t file by the extended deadline, your remaining option is a written request to the IRS for additional time, and approval is discretionary.
The request should be a formal letter that includes the corporation’s full legal name, address, and EIN, the specific form being extended (Form 5472), the tax year, and the additional due date you want. The substance is your explanation of why the delay occurred despite ordinary business care: what international data was unavailable, what steps you took to obtain it, and what changed that now allows you to complete the filing. Vague explanations don’t work.
The IRS evaluates these requests under two standards:
- Reasonable cause: circumstances beyond your control prevented timely filing. Examples the file cites include unavailable foreign-sourced financial records, natural disasters affecting a foreign related party’s operations, or the unexpected incapacity of the person responsible for the filing.
- Undue hardship: a higher bar requiring that timely filing would cause significant financial distress, not just added cost or inconvenience.
Mail the request to the same IRS service center where you’d file the return. The IRS responds in writing with either a new deadline or a denial. A denial means penalties apply immediately, so treat this as a last resort rather than part of your planning.
Why the Extension Deadline Matters
The penalty for failing to file a complete and correct Form 5472 by the due date (including extensions) is $25,000 per form.4Internal Revenue Service. International Information Reporting Penalties Because a separate form is required for each related party, a corporation with three foreign related parties faces $75,000 for a single missed deadline.1Internal Revenue Service. Instructions for Form 5472 The penalty applies even when the corporation owes zero U.S. income tax, and a substantially incomplete form is treated the same as no filing at all.5Office of the Law Revision Counsel. 26 USC 6038A – Information With Respect to Certain Foreign-Owned Corporations
The exposure grows fast if you ignore an IRS notice. If the IRS sends a notice about a missing form and you still don’t file within 90 days, an additional $25,000 penalty applies for each 30-day period (or fraction of one) that the failure continues. There is no cap on the continuation penalty.4Internal Revenue Service. International Information Reporting Penalties
Reasonable cause is a statutory defense once penalties are assessed. Under 26 USC 6038A(d)(3), the penalty clock doesn’t run while reasonable cause for the failure exists.5Office of the Law Revision Counsel. 26 USC 6038A – Information With Respect to Certain Foreign-Owned Corporations The IRS holds international information reporting to a strict standard, and being unaware of the requirement or finding it inconvenient to gather records doesn’t qualify. If a penalty notice arrives, respond in writing with a detailed explanation and supporting documentation before the 90-day continuation window closes.
The practical takeaway for anyone planning an extension: file Form 7004 well before the original deadline, keep proof it was received, and use the six-month window to actually complete the return. Documenting your efforts to gather records from foreign related parties during that period is worth doing, because those records become your evidence if you later need to show reasonable cause.