Need the packet prepared for you? Start your Form 1120 + 5472 filing with GatewayBase.
A pro forma Form 1120 is a simplified Form 1120 used as a cover page for Form 5472.
For many foreign-owned single-member US LLCs, the main filing is Form 5472. But the IRS does not usually receive Form 5472 by itself for a foreign-owned US disregarded entity. The Form 5472 is attached to a pro forma Form 1120.
In plain English: the pro forma Form 1120 is the wrapper. Form 5472 is the information return that reports the related-party transactions.
This article is general education, not tax advice. GatewayBase provides document preparation and filing workflow software. We are not a law firm, CPA firm, or tax advisor.
Why does a disregarded LLC use Form 1120?
A single-member LLC owned by one foreign person is often treated as a disregarded entity for US federal income tax purposes.
"Disregarded" can sound like the LLC does not exist for every IRS purpose. That is not true.
For Form 5472 reporting rules, a foreign-owned US disregarded entity can be treated as separate from its owner and classified as a corporation for limited reporting purposes. That is why Form 1120 appears in this filing, even though the LLC is not always filing a normal full corporate income tax return.
What does pro forma mean?
"Pro forma" means it is not the full normal version of the form.
For this filing, the Form 1120 is usually limited to basic identifying details. The IRS instructions for Form 5472 say that for a foreign-owned US disregarded entity, the only required information on Form 1120 is the name and address of the entity and specific items on the first page.
That is why people call it a cover page. It helps attach and route the Form 5472 correctly.
What goes with the pro forma Form 1120?
The packet usually includes:
- Pro forma Form 1120.
- Form 5472.
- Signature pages or required signature details.
- Any supporting information needed for the filing workflow.
- Filing proof after sending.
There may be more than one Form 5472 if there is more than one related party. If your structure is complex, get professional advice.
What information do you need?
For a simple supported foreign-owned LLC filing, gather:
- LLC legal name.
- EIN.
- US address or mailing address.
- Tax year start and end date.
- Owner name.
- Owner foreign address.
- Owner country of tax residence.
- Foreign tax ID, if available.
- Related party details.
- Owner transactions and amounts.
GatewayBase asks these questions in simpler language and maps the answers into the filing packet.
Is this the same as a full corporate tax return?
No, not for the common foreign-owned disregarded entity path.
A normal Form 1120 for a C corporation can include income, deductions, tax calculations, schedules, and many other items.
The pro forma Form 1120 used with Form 5472 for a foreign-owned US disregarded entity is different. It is a limited filing wrapper for the Form 5472 requirement.
This distinction matters because many foreign LLC owners panic when they see "Form 1120" and think they need a full corporate tax return. In the supported simple case, the pro forma Form 1120 is much narrower.
Why the filing can still matter
Even though the Form 1120 is pro forma, the filing requirement is real.
The IRS instructions say Form 5472 is filed as an attachment to the reporting corporation's income tax return by the due date, including extensions. For a foreign-owned US disregarded entity, that means the pro forma Form 1120 with Form 5472 attached.
The penalty risk is also real. Current IRS guidance lists a $25,000 penalty for failing to file a complete and correct Form 5472 by the due date.
Can you file the pro forma Form 1120 and Form 5472 electronically?
For foreign-owned US disregarded entities, IRS instructions say Form 5472 cannot be filed electronically.
This is where many online searches get confusing. You can use GatewayBase online to prepare the filing packet. But the IRS submission method for this type of filing follows the special IRS instructions for foreign-owned US disregarded entities.
GatewayBase helps with the workflow and stores the filing proof in your file vault.
How GatewayBase helps
GatewayBase creates the pro forma Form 1120 and Form 5472 packet from simple questions.
You do not need to start with the raw IRS form and guess what each box means.
GatewayBase helps you:
- Add the LLC details.
- Add the tax year.
- Add the foreign owner details.
- Add related-party transaction details.
- Review the generated packet.
- Sign and send through the supported filing workflow.
- Store the final documents and fax confirmation.
Start here: Form 1120 + 5472 filing.
For a broader introduction, read the Form 1120 and 5472 Filing Guide.
FAQ
Is pro forma Form 1120 the same as Form 1120?
It uses Form 1120, but in a limited way. For the foreign-owned disregarded entity path, it works mainly as the cover page for Form 5472.
Does a disregarded LLC always ignore Form 1120?
No. A foreign-owned US disregarded entity may still need a pro forma Form 1120 with Form 5472 for limited reporting purposes.
Does the pro forma Form 1120 mean my LLC owes corporate tax?
Not by itself. The filing is an information reporting workflow. Whether any US tax is owed depends on the facts.
Do I need an EIN for the pro forma Form 1120?
Yes. Your LLC needs an EIN before completing the filing. If you do not have one, start with an EIN application.
Can GatewayBase prepare the packet?
Yes, GatewayBase prepares the pro forma Form 1120 and Form 5472 packet for supported foreign-owned US LLC filings.