Pro Forma Form 1120: What It Is, What to Fill In, and How a Foreign-Owned LLC Files It

TL;DR

A pro forma Form 1120 is a regular Form 1120 with only the header filled in — name, address, EIN, the initial/final checkboxes — plus “Foreign-owned U.S. DE” written across the top. It computes no tax. It exists because the IRS requires Form 5472 to be attached to a return, and a foreign-owned single-member LLC has no other return to attach it to. You complete the header, attach Form 5472, sign, and mail or fax the package to the IRS in Ogden, Utah by April 15 (October 15 with Form 7004). This works the same whether the owner lives in the Philippines, Germany, Nigeria or anywhere else outside the U.S.

What “pro forma” means here

Pro forma is Latin for “as a matter of form.” In tax practice it means a return prepared in form only — the shell of the document, without the substance it usually carries.

The Form 5472 instructions are the source of the term. Under “When and Where To File” they say:

“While a foreign-owned U.S. DE has no income tax return filing requirement, as a result of final regulations under section 6038A, it will now be required to file a pro forma Form 1120, U.S. Corporation Income Tax Return, with Form 5472 attached by the due date (including extensions) of that Form 1120. The only information required to be completed on Form 1120 is the name and address of the foreign-owned U.S. DE and items B and E on the first page.”

So the definition is precise: name, address, item B, item E — and nothing else is required. Everything a real corporation reports on the 1120 — gross receipts, deductions, taxable income, tax — is left blank.

Why an LLC files a corporate form at all

A U.S. single-member LLC that has not elected otherwise is a disregarded entity under Treas. Reg. §301.7701-2: for income tax it does not exist separately from its owner. A non-resident owner therefore has no LLC-level income tax return.

Final regulations under section 6038A (T.D. 9796, published in Internal Revenue Bulletin 2017-3) closed the resulting reporting gap. The Form 5472 instructions describe the result: for tax years beginning on or after January 1, 2017, “a foreign-owned U.S. DE is treated as an entity separate from its owner and classified as a corporation for the limited purposes of the requirements under section 6038A that apply to 25% foreign-owned domestic corporations.”

That phrase — for the limited purposes of section 6038A — is the whole story. The LLC is a corporation only for the purpose of filing Form 5472, and Form 5472 must ride on a Form 1120. The 1120 is therefore filed in form only. Hence “pro forma.”

Exactly which boxes are completed

Page 1 of Form 1120 has lettered header items A–E on the left and top, then numbered lines 1–37 for income, deductions and tax. The pro forma version touches only the header.

Items A, C and D are not on the IRS’s required list. Item A (consolidated return, personal holding company, personal service corporation, Schedule M-3) does not apply. Preparers differ on item C (date incorporated) and item D (total assets); filling them consistently with Form 5472 lines 1m and 1c does no harm, and leaving them blank is what the instructions permit.

What is left blank

The temptation to enter zeros on every line is understandable and wrong. Consumer tax software has no “pro forma” mode; forcing a full 1120 out of it produces pages of zeros that look like a defective corporate return rather than a cover sheet. A pro forma 1120 is one page with a header, a notation, a signature, and nothing else.

Why there is no tax due

Because the entity that “files” the 1120 does not exist for income tax purposes. The LLC’s income, if any, is the owner’s income. Whether the owner owes U.S. tax on it is decided under the non-resident rules — is the income effectively connected with a U.S. trade or business, is it U.S.-source, does a treaty apply — and reported, if at all, on the owner’s Form 1040-NR. None of that is computed on the pro forma 1120, and nothing is paid with it.

This is also why a dormant LLC still files. The pro forma 1120 is not triggered by income; Form 5472 is triggered by a reportable transaction with the owner, and Part V of Form 5472 counts “amounts paid or received in connection with the formation … including contributions to, and distributions from, the entity.” A no-income LLC usually still files, and here is why “no activity” rarely means “no Form 5472”.

”LLC 1120”: pro forma or a real one?

People search “LLC 1120” meaning three different things. The classification decides which applies.

The first row is nearly every non-resident e-commerce seller, freelancer and holding-company owner with one LLC. The differences between the first two rows are set out in Form 1120 vs pro forma 1120; the third is in single-member vs multi-member LLC for foreign owners. If you are unsure whether a Form 8832 election was ever filed for your LLC, check the formation paperwork from your agent — some file it without explaining what it does.

Owner in the Philippines, India, the UK, Brazil — does the country matter?

No. The test is whether the owner is a “foreign person,” not where they live. The Form 5472 instructions define a foreign person as, among others, “an individual who is not a citizen or resident of the United States” and “any partnership, association, company, or corporation that is not created or organized in the United States.”

So a Filipino freelancer’s Wyoming LLC, an Indian SaaS founder’s Delaware LLC, a British Amazon seller’s Florida LLC and a Brazilian consultant’s New Mexico LLC all file the identical package: Form 5472 attached to a pro forma 1120. Three points that are country-specific:

• The FTIN box. Form 5472 line 4b(3) requires the owner’s foreign taxpayer identification number. Enter the home-country number — a Philippine BIR TIN, an Indian PAN, a UK UTR or NI number, a Brazilian CPF. The instructions say if you do not have one, enter “None” or “N/A”.
• Tax treaties do not remove the filing. A treaty may affect whether the owner’s income is taxed in the U.S.; it does not touch the information return. The Form 5472 filing exception for treaty positions applies to foreign corporations without a U.S. permanent establishment, not to a U.S. LLC.
• Your home-country obligations are separate. The pro forma 1120 reports nothing to your own tax authority. How a U.S. LLC is treated at home, country by country.

How the pro forma 1120 is filed, step by step

1. Prepare Form 5472 for the year: Parts I–III identify the LLC and its owner; Part V lists formation costs, contributions and distributions; Part IV covers loans, service payments and similar items if any. The part-by-part Form 5472 instructions walk each line.
2. Complete the pro forma 1120 header as in the table above: tax year, “Foreign-owned U.S. DE” across the top, name, address, item B, item E.
3. Sign the 1120 in the signature block. Form 5472 has no signature line.
4. Assemble the 1120 on top, Form 5472 behind it, then any attached statements (the Part V statement, the exchange-rate schedule).
5. Fax or mail to the dedicated address the instructions give for foreign-owned U.S. DEs — “These filers do not use the mailing address provided in the Instructions for Form 1120”:
   • Fax (300 DPI or higher): 855-887-7737
   • Mail: Internal Revenue Service, 1973 Rulon White Blvd, M/S 6112 Attn: PIN Unit, Ogden, UT 84201
6. Meet the deadline. Form 1120 is due “by the 15th day of the 4th month after the end of its tax year” — April 15 for a calendar year. To extend, file Form 7004 by that date with form code 12 (Form 1120) on Part I line 1, “Foreign-owned U.S. DE” written across its top, sent to the same Ogden fax or address. That moves the due date to October 15. Details in Form 7004 for a foreign-owned LLC.
7. Keep proof. The fax confirmation page, or the tracked-mail receipt, plus a copy of the full package. The IRS does not send an acknowledgement for a paper information return.

Electronic filing is not an option: “If you are a foreign-owned U.S. DE, you cannot file Form 5472 electronically.” Practical fax tips from abroad are in how to fax Form 5472 to the IRS.

The details preparers actually sweat

Small things on this “simple” cover page cause real rejections and correspondence:

• The notation matters. “Foreign-owned U.S. DE” across the top is what routes the package correctly inside the IRS — omit it and the shell can be processed as a defective corporate return.
• The tax year must match between the 1120 header and the Form 5472 header — mismatched years are a classic correspondence generator.
• First and last years get checkboxes. An initial-year filing marks Initial return; a dissolution-year filing marks Final return. Both are easy to forget and annoying to fix after the fact.
• The address on the form is a live choice. Whatever you put becomes part of the IRS’s picture of where to reach you — keep it consistent with your address of record, and check item E (4) if it changed.
• The EIN must be the LLC’s. Not the owner’s ITIN, not a foreign company’s number.
• Software fights you. No consumer product produces a header-only 1120 on purpose. Professional preparation generates the stripped shell deliberately.

None of these change the concept — cover page plus 5472 — but they are why a mechanically simple filing still rewards someone who has produced a few hundred of them.

If you missed a year

A pro forma 1120 that was never filed means a Form 5472 that was never filed, and the penalty attaches to the 5472: $25,000 per form, with a further $25,000 for each 30-day period the failure continues beyond 90 days after IRS notice. The instructions also say “filing a substantially incomplete Form 5472 constitutes a failure to file.” The Form 5472 penalty explains how it is assessed and what a response looks like. For a year already missed, the past-due filing service prepares the package with a reasonable cause statement — the IRS decides whether to accept it, and no one can promise that outcome.

Where Form 5471 fits (it doesn’t)

Owners sometimes ask whether they should be filing Form 5471 “as well.” No: Form 5471 is filed by U.S. persons who own foreign corporations — the mirror image of your situation. Form 5471 vs Form 5472 has the decision table.

For most owners the whole package — pro forma 1120, Form 5472, Part V statement, fax and proof — is what our Form 5472 + pro forma 1120 service delivers each year, prepared and signed by a professional U.S. tax preparer at a flat $349.

Official references: IRS — Instructions for Form 5472 (the “Foreign-owned U.S. DEs” paragraph under When and Where To File) · IRS — About Form 1120 · IRS — Instructions for Form 1120 (items B and E; When To File) · Treas. Reg. §301.7701-2 (disregarded entities) · Treas. Reg. §1.6038A-2 (reporting requirements).

This article is general information, not tax or legal advice. Confirm the rules that apply to your specific situation before acting.