1120 Pro Forma Instructions (Foreign-Owned LLCs)
Filling out a pro forma Form 1120 is different from a real corporate tax return. You complete almost nothing. Below is the field-by-field breakdown of what to fill in, what to leave blank, and the common mistakes that cause the IRS to misprocess your filing.
Page 1 header — fully filled in
Income section (lines 1-11) — LEAVE BLANK
Deductions section (lines 12-29) — LEAVE BLANK
Tax, refundable credits, and payments (lines 30-37) — LEAVE BLANK
Schedules — what to do
Signature block
Common mistakes that trigger IRS notices
Frequently asked questions
- Should I write 'N/A' or 'None' in blank fields?
- No. Leave the fields completely untouched. The IRS instructions for pro forma filings specify the unused sections stay blank, not marked.
- What if I don't know my LLC's total assets at year-end?
- It's usually the ending balance in your business bank account, plus any equipment or receivables. If your LLC only has a bank account, use that ending balance.
- Can I print a blank 1120 PDF and fill it by hand?
- Yes, the IRS accepts handwritten Form 1120. Use blue or black ink, write neatly, and stamp "Foreign-Owned U.S. DE" at the top. Our service generates a typed PDF you can sign — fewer errors.
Related guides
Pro Forma Form 1120 — Plain-English Guide
Foreign-owned US single-member LLCs file pro forma Form 1120 as the procedural vehicle for filing Form 5472. "Pro forma" means most of the form stays blank — you only fill in entity identification fields and stamp "Foreign-Owned U.S. DE" at the top. This guide shows exactly what to fill in.
Form 1120 for Foreign-Owned LLCs
If you're a non-US person who owns a US single-member LLC, you must file Form 1120 — but in a special "pro forma" version. Almost every field stays blank. The 1120 exists only as an envelope for Form 5472 (the form that actually matters). Here's exactly how it works and what to file.
Form 1120 for a Disregarded Entity (Foreign Owner)
A US LLC owned by a single non-US person is a "disregarded entity" — meaning the IRS treats it as if it doesn't exist for income tax purposes. So why does it file Form 1120? Because Treasury Regulation § 1.6038A-1 requires Form 5472 to be attached to a tax return, and a pro forma Form 1120 is the IRS-specified vehicle.